Displaying items by tag: agriculture

QUESTIONS

AGRICULTURE

  1. _____________________________ soil is used for building and construction.
    1. Clay
    2. Sandy
    3. Loam
    4. Humus
  2. The tool shown below is used for ___________________________________
    G5AHT1PMQ2
    1. Cutting
    2. Slashing
    3. Digging
    4. Transplanting
  3. Which soil remains water logged for long period of time after it rains? ___________________________________
    1. Loam
    2. Sandy
    3. Clay
    4. Silt
  4. Which one of the following is not worn when handling small wild animals?
    1. Cloves
    2. Masks
    3. Gumboots
    4. Suit
  5. The following are types of soil except;
    1. Sand
    2. Clay
    3. Manure
    4. Loam
  6. The following are small wild animals that destroy crops. Which one is not?
    1. Dogs
    2. Monkeys
    3. Weaver birds
    4. Moles
  7. Identify the farm tool shown below.
    G5AHT1PMQ7
    1. Jembe
    2. Panga
    3. Spade
    4. Rake
  8. The removal of unwanted plants is known as ________________________________
    1. prunning
    2. weeding
    3. uprooting
    4. thinning
  9. The removal of excess vines from a plant is known as ___________________________________
    1. prunning
    2. mulching
    3. thinning
    4. weeding
  10. Which one of the following is a domestic animal?
    1. Lizard
    2. Puppy
    3. Rat
    4. Hare
  11. Which one of the following is a reason for eating fruits?
    1. Improves our skin
    2. Causes constipation
    3. To look bad
    4. Make us vomit
  12. All the following are caring practices for fruit trees except?
    1. Drying
    2. Watering
    3. Prunning
    4. Weeding
  13. We wear __________________________________  on the face when spraying crops.
    1. Apron
    2. face mask
    3. gumboots
    4. gloves
  14. All the following are methods used to conserve water in soil except?
    1. shading
    2. drip irrigation
    3. mulching
    4. harvesting
  15. Which one of the following is not a method used to keep away wild animals?
    1. Killing
    2. Fencing
    3. Scare crow
    4. Safe traps

HOMESCIENCE  

  1. Which one of the following is a fragile utensil?
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  2. Which one of the following is not a hygiene practice?
    1. Washing hands
    2. wearing clean clothes
    3. Cleaning the utensils
    4. Making the house dirty
  3. Which one is not a method of cooking?
    1. Eating
    2. Boiling
    3. Baking
    4. Roasting
  4. This diagram is a tool used in needlework. It is called a ________________________________________
    1. Scissors
    2. Needle
    3. Tape measure
    4. Ruler
  5. The following are factors we consider while buying a button. Which one is not?
    1. shape of the button
    2. colour of the button
    3. the shopkeeper
    4. colour of the garment
  6. Which one of the following is not a personal item?
    1. Chair
    2. Handkerchief
    3. Towel
    4. Pant
  7. Why are stockings not soaked in water?
    1. They dry easily
    2. They lose shape easy
    3. They get clean fast
    4. They are never dirty
  8. Which one of the following is not a laundry process?
    1. Washing
    2. Drying
    3. Storage
    4. Buying clothes
  9. Which one of the following types of food is not found in the group?
    1. Maize
    2. Beans
    3. Meat
    4. Milk
  10. Mangoes and oranges are in the _______________________ food group
    1. Energy giving
    2. Protective
    3. Fats and oils
    4. Energy giving
  11. Which one of the following is a cleaning material?
    1. fork
    2. plate
    3. dust pan
    4. thimble
  12. Which one of the following is not used to clean shoes?
    1. shoe polish
    2. old newspapers
    3. soap
    4. boiled water
  13. A needlework tool that is used to protect the thumb is called a _____________________________
    1. thimble
    2. thumb tack
    3. tape measure
    4. pin
  14. Milk can be preserved by ________________________________________
    1. frying
    2. boiling
    3. steaming
    4. stewing
  15. Which one of the following is not found in the kitchen?
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MARKING SCHEME

AGRICULTURE

  1. B
  2. B
  3. C
  4. D
  5. C
  6. D
  7. C
  8. B
  9. A
  10. B
  11. A
  12. A
  13. B
  14. D
  15. A

HOMESCIENCE

  1. D
  2. D
  3. A
  4. B
  5. C
  6. A
  7. B
  8. D
  9. A
  10. B
  11. C
  12. D
  13. A
  14. B
  15. A

Off Season Cropping Techniques

Off season cultivation refers to the production outside of their typical cropping cycle.
The main objective of off season cultivation is to produce and supply to the market during their lean period.

Importance/Advantages of off season cropping

  • It helps in the more effective and efficient use of land and farm resources.
  • The per-unit result of off-season planting is excellent.
  • Consumers nowadays prefer fresh veggies even when they are not in season, and off-season vegetable cultivation can meet this need.
  • It is sometimes feasible to gain foreign exchange by exporting fresh veggies.
  • It is a great source of preventive food that also contributes to nutritional security.
  • It's a good choice for seed production.

Technologies For Off Season Cropping

  1. Drip irrigation
    Crop yields can increase through improved water and fertility management and reduced disease and weed pressure. When drip irrigation is used with polyethylene mulch, yields can increase even further.
    These benefits are only possible when a drip irrigation system is properly designed, managed, and maintained.

    Advantages of drip irrigation
    • Lower-volume water sources can be used because trickle irrigation may require less than half of the water needed for sprinkler irrigation.
    • Lower operating pressures mean reduced energy costs for pumping.
    • High levels of water-use efficiency are achieved because plants can be supplied with more precise amounts of water.
    • Disease pressure may be less because plant foliage remains dry.
    • Labor and operating costs are generally less, and extensive automation is possible.
    • Water applications are made directly to the plant root zone. No applications are made between rows or other nonproductive areas, resulting in better weed control and significant water savings.
    • Field operations, such as harvesting, can continue during irrigation because the areas between rows remain dry.
    • Fertilizers can be applied efficiently through the drip system.
    • Irrigation can be done under a wide range of field conditions.
    • Compared to sprinkler irrigation, soil erosion and nutrient leaching can be reduced.
  2. Container gardening
    The following crops best suited for container/pot gardening;
    • Beans
    • Beets
    • Tomatoes
    • Cucumber
    • Onions
    • Peas
    • Radish
    • Carrots
    • Potatoes
    • Squach
    • Brinjal(Eggplant)
    • Ladies Finger (okra)
    • Capsicum/Pepper/ Green Chilies
    • Leafy vegetables such as lettuce, Kale, Methi(Fenugreek), Coriander (cilantro)
      G7BAgriNotesP36
      Factors to consider when establishing framed suspended gardening for off season crops
      • Can it be established along pathways
      • Can it enhance beauty
      • Can it grow within a short period of time (not a perennial crop)?
      • Is there space for the containers
      • Mechanisms put in place to manage pests and diseases.

Off Season Production Techniques

  • Taking use of and utilizing various agro-climatic conditions.
  • Improved varieties are chosen.
  • Adjustment of planting time.
  • Making plastic tunnels, polythene houses, and permanent glass houses to provide controlled environmental conditions.
  • Staggered planting
  • Succession planting – planting two different at different times in one farm- one with a faster maturity.
    Construction of suspended garden design
    Refer to learner’s book

Value Addition Techniques

Value-added agriculture generally focuses on production or manufacturing processes, marketing or services that increase the value of primary agricultural commodities, perhaps by increasing appeal to the consumer and the consumer's willingness to pay a premium over similar but undifferentiated products.

Benefits include:

  • increased income,
  • employment creation,
  • improved food safety,
  • food security,
  • nutritional benefits and
  • greater consumer confidence.

There are four major ways that value is added to crops along the value chain:

  1. product transformation, e.g. frying, drying
  2. distribution,
  3. storage, and
  4. added service.

The value of farm products can be increased by cleaning, cooling, cooking, combining, churning, culturing, grinding, extracting, drying, handcrafting, packaging and distributing, as well as by adding information, education or entertainment,

Adding value to groundnuts

Apart from just eating them raw or cooked, groundnuts can be used to produce oil, paste, flour or sauce used in cakes and cookies obtained by grinding nuts, and peanut butter.

Adding value to Potatoes

This can be done through boiling, frying, smashing.

Learners to check on how to add value on other products

Importance Of Addition On Crop Produce (explained)

  •  Increased revenue. Any addition adds a percentage of increased financial value to the produce and has the effect of improving the incomes of the local farmers.
  • Value addition allows the farmer to focus on the consumer while producing and through meeting expectations, he can create a loyal market around the product.
  • Increased shelf life is a benefit any farmer would want. The longer the product can stay without getting spoilt, the more the guarantee one has of a product selling at their preferred price and time. Milk for instance, hardly lasts over 24 hours but with boiling, it can last more days while with further processing into ghee, the same milk can last months.
  • With value addition comes increased bargaining power. Brand Creation is one of the de facto results of value addition and a fact that your product can be directly identified with you or your farm which is important in an industry where customers exercise a lot of brand loyalty. It allows them to always and readily identify with you as well as win you more referral customers.
  • value addition creates employment opportunities for people who work there like; industrial chemists, food processors, factory laborers
  • Wastage and disposal of unwanted refuse is curtailed since they can be made into different quality products. This helps to ensure zero waste and protect the environment.

Animal Handling

Forms Of Animal Handling (humane Methods)

The objective of humane animal handling is to move animals with minimum stress to both the animals and handler. Considerate handling reduces the risk to the animal of pain, injury and suffering.

Planning the restraint procedure

When preparing to restrain a patient, always make sure the area has enough room, is clean, dry, and well lit

  • A plan should be discussed:
  • Move any costly equipment
  • Nonslip area
  • Temperature should be considered
  • What should be done if animal happens to get away from restrainer
  • Back up plan (Plan B!)

G7BAgriNotesP23

Rabbit Restraint & Handling

Picking Up

Grab scruff of the neck with one hand and lifting up while placing the other hand under the rump for support or wrap patient securely in a towel.

Holding

Use the same technique but the hand under the rump is moved to support the abdomen.
Rabbits seldom bite but many cause injury with their hind legs or may be injured if placed on a smooth surface
Rabbit’s foot pads are covered with fur which causes a lack of traction
Can lead to dislocation of their hip or spinal fracture, when they try to move or hop

G7BAgriNotesP24

Rodents Restraint & Handling

Mice

Grasp the tail close to the body with one hand
Use the other hand to grasp loose skin in the neck and shoulder area.
Larger Rodents and Ferrets
Make sure the animal is awake to avoid bites
Hold in one hand, cup other over its head
Wrap thumb and index
finger around neck and under chin
Do not over tighten fingers around chest as this can impair breathing

G7BAgriNotesP25

Avian Restraint

Birds

Highly trained personnel
Can stress easily
Do not squeeze thorax
Sensitive to overheating
Small to medium sized
Grasp from behind, finger and thumb on sides of head, others around body
Large birds require 2 hands
Towel can also be used

G7BAgriNotesP26

Cats Restraint & Handling

Cats tend to be one of the most difficult during restraint when they become upset and aggressive from stress
Safely restrain and have control over head
Cat bags: control the limbs and head
Squeeze cages: wire boxes with small slots that allow injections to be given

G7BAgriNotesP27

Inhuman handling of animals in the community

G7BAgriNotesP28

Solutions to animal’s mistreatment

  • Be an example of kindness to other pets. ...
  • Intervene if you witness animal cruelty, abuse or neglect. ...
  • Report animal cruelty, abuse or neglect. ...
  • Teach your children to have respect for animals. ...
  • Demand stricter laws for the protection of animals. ...
  • Shelter an animal in need.

Importance Of Human Treatment Of Animals

  • Improved levels of animal health and care will deliver better animal welfare, more efficient livestock production, safer animal-sourced foods and healthier, improved livelihoods.
  • Animals that are well fed and watered, kept in clean and comfortable conditions, and that are handled well with opportunities to express important behaviours are less likely to die prematurely or show poor growth than less well cared for animals.
  • They are more productive with more efficient use of resources such as time, labour and feed for livestock production bringing benefits including improved food security and greater income.
  • Furthermore, avoiding stress before slaughter reduces contamination of meat with harmful bacteria and affects the quality, and value of the meat.
  • Animal welfare is therefore also environmental protection. However, it is not only animals in stables or private households that need to be protected, but also animals in the wild. There they need above all plenty of space, clean water, fresh air, and sufficient food and shelter.

General Management of Pets

Characteristics Of Pets

  • Dependent on Humans to Live – A pet needs to be given food, water, and shelter by its owner. Being domesticated means the animal depends on its owner for all of its care.
  • Lives in a Home – A pet lives in a home. Some pets such as parakeets and hamsters live in cages. Alternatively, dogs and cats wander freely around a home and may have their own bed to sleep in.
  • Needs a Veterinarian’s Care – Pets need care from a veterinarian. The type of healthcare a pet needs depends on what type of pet it is. An iguana and a beagle need completely different types of vet care!
  • Some Pets Can Be Trained – A dog can learn how to sit, stay, and heel in a course of obedience training. Parrots can be taught to talk, and some cats can be taught by humans to do tricks.
  • Devoted to Its Owner – Pets are often devoted to their owners. They can establish a trust with their owner over time. In fact, some pets want to be with their owners 24/7!
  • Provides Companionship – A pet is meant to be a companion to its owner.
  • Pets are Different from a Therapy Animal – A therapy animal receives specific training in order to provide support and care to its owner. As an example, some therapy dogs are trained to recognize the signs of a seizure in their owner. The dog responds by trying to get the person to a safe place. Alternatively, a pet is there strictly as a companion.
  • Different from a Farm Animal – A cow or a chicken living on a farm serves a specific purpose. A cow provides milk while a chicken lays eggs to be eaten or sold. This makes farm animals a little different than traditional pets.
  • Can Be Common or Uncommon – When you think of a pet you probably picture a dog, a cat, a bird, a fish, or a gerbil. Those are common choices for pets. Some people prefer less common or exotic pets such as snakes, iguanas, spiders, and ferrets. As long as an owner can offer appropriate care, many animals can live happily as pets.
  • Cannot Survive in the Wild – One of the main characteristics separating pets from other animals is a pet can’t survive in the wild. It has been domesticated or raised under a person’s care. So, releasing a pet snake into the wild doesn’t mean it will know how to find food or shelter. In fact, it will likely die.

Different types of pets reared in the community

A pet is a domesticated animal that lives with an individual or family. There are popular, well-known pets like dogs and cats

  • Dogs
  • Cat
  • Rodents
  • Fish
  • Birds
  • Turtles
  • Snake

Factors To Consider When Selecting A Pet For Rearing

Choose a pet that will suit your lifestyle and surroundings. For instance:

  • How often are you home? If you work long hours, a dog may not be a good choice of pet, as all dogs require lots of companionship. In this case, pets such as fish might be more suitable.
  • How large is your backyard, and do you have good fencing? If you have a small backyard or poor fencing, then a dog may not be a good choice. You could consider a pet such as a cat that lives indoors with you.
  • Are you prepared to have more than one pet? Some types of animals, such as birds and rabbits, need the company of each other to stay happy and healthy.
  • How much money can you afford to spend on your pet? All pets are expensive — even animals that are cheap to purchase, like fish, birds and guinea pigs, can cost a lot of money when it comes to buying and setting up tanks, cages and hutches. Some dog breeds will cost more to keep than others. Large dogs need more food, some breeds of dogs need regular clipping of their coats.
  • Are you renting? Your landlord may not let you to own a cat or a dog. You may want to consider other pets such as fish.
  • Do you live in an apartment? Some birds, such as parrots, can be very noisy, and may attract complaints from neighbours. You may want to consider a quiet pet such as a cat, or fish.
  • Do you have young children? Some types of pets tolerate children better than others.
  • Are you prepared to have your pet inside with you? Dogs should not be left in the backyard all day — they need to spend time inside the house with you, in order to remain happy and healthy.
  • Does your council require cats to be confined to your property? If so, you must be prepared to have your cat live inside with you, or to buy or build cat proof fencing or a cat enclosure.
  • How much time do you have to exercise your pet? Dogs need daily walks. Some breeds of dog are more energetic than others and may need longer or more frequent walks.
  • How much time do you have to train your pet? Dogs, particularly puppies or young dogs, need time spent on toilet training and basic obedience training. Puppies and kittens also require lots of socialization, and regular small meals throughout the day, during the first 6 months of life. You may be better off adopting an adult dog or cat, who is already house trained and socialized.

Acquiring a pet for rearing

  • Adoption is the best choice 
    Adoption of a pet from a shelter is the best way to find a new companion. There are many animals in shelters waiting for a new home to call their own, including a large variety of breeds, sizes, and ages of animals. Some shelters also rehome small mammals such as rabbits, guinea pigs and hamsters who are often sadly taken to shelters when the children they have been bought for have lost interest in caring for them. The benefit of rehoming from a reputable animal shelter is that the animals will have been assessed both in terms of their health and behaviorally
  • Brokers,
  • pet stores,
  • neighbors,
  • professional breeders,
  • commercial kennels,
  • puppy mills, and animal shelters

Management Practices In Rearing Of Pets

  • Colostrum feeding
  • Weaning
  • Disbudding - Arresting the horn growth at an early age, when the horn root is in the bud stage is called disbudding.
  • Ear tagging
  • Castration
  • Vaccination schedule for adult animals
  • Disinfection
  • Quarantine
  • Isolation of sick animals
  • Insuring the animals
  • Disposal of carcass
  • Record maintenance

Preparation Of Animal Products

Different animal products include:
meat and meat products, poultry products (meat and eggs), fish, shellfish, dairy products (milk and cheese), and non-food products such as fiber (wool, mohair, cashmere, and leather)

Factors To Consider When Grading Eggs

The grade is determined by the

  • interior quality of the egg
  • the appearance and condition of the egg shell.
  • Eggs of any quality grade may differ in weight (size).
  • Weight or Volume
  • cleanliness
  • Size,
  • Colour

Factors considered in detecting defects when grading eggs

  • blood spot,
  • meat spot,
  • mold,
  • stuck yolk,
  • addled egg and
  • embryonic growth

Processing Raw Honey

The process of honey harvesting and extraction most likely happens on separate days. These are the tools required:

Honey Harvest

  1. beekeepers suite - mesh helmet and folding veil would do it, with some layers of clothes
  2. smoker with fuel (dry branches, leaves, etc.) and a lighter
  3. frame super - where frames with honey combs will be put for transportation
  4. sting resistant gloves
  5. hive tool - to move the frames, scrape wax, etc.

Honey Extraction

  1. heated knife - to unseal honey cells
  2. uncapping fork - to unseal honey cells missed by the heated knife
  3. tub for wax/honey
  4. extractor! - fancy cylindrical piece of equipment, used to extract honey
  5. food-grade bucket - to catch honey out of the extractor
  6. double sieve - catches wax and impurities as honey is poured from extractor
  7. containers - final destination of honey before consumption

The process of honey harvesting and extraction most likely happens on separate days. These are the tools required:

  1. Harvesting
    Light the smoker. Use dry branches, hay or newspaper. The smoke dulls the bees' receptors, and prevents them from releasing the alarm odor, a volatile pheromone. The smoke also makes bees gorge on honey, which further pacifies them
    G7BAgriNotesP30
  2. Prepare Supers
    The frames with honey comb are transported in supers. Have them handy. You may also want to have a cloth to cover the super with frames full of honey to prevent bees or other insects from getting to them.
    G7BAgriNotesP30
  3. Open Sesame
    G7BAgriNotesP301
    Using the hive tool, lift the hive lid and blow some smoke in the hive. Open lid slowly. Our bees were pretty calm, but that is not always the case!
  4. Honey Frame Inspection
    Pull the frames out of the super and inspect the honey combs. Depending on how busy the bees were, how warm it was and if the hive didn't swarm you will know how much honey you have.
    G7BAgriNotesP31
  5. Extraction
    G7BAgriNotesP33
    Now the best part! Take the frame of capped honey. Mount the frame above the tub for wax and honey. Use the heated knife to unseal the cells. Lean the heated knife on the edges of the frame and under 30 degree angle and move "fast" - don't linger too long, it burns the honey! Repeat for both sides of the frame.
    The heated knife takes off most of the caps. For the leftover ones, use the uncapping fork and gently shave off the caps.
  6. Pour Out Slowly!
    G7BAgriNotesP32
    Place your food-grade bucket under the extractor spigot. Use a double sieve to catch the wax and impurities as the honey starts pouring out of the extractor.
  7. Prepare Containers
    G7BAgriNotesP34
    Wash your jugs, jars or whatever containers you will put the honey in. Air dry.
    G7BAgriNotesP35

Extracting Honey Without A Honey Extractor

For small apiaries, harvesting honey without an extractor can be a fun and inexpensive option. We’ll cover two methods that do not require an extractor: the crush and strain method, and the cut comb method. Both of these extraction methods sacrifice comb, meaning your bees will need to draw out new comb before they can produce more honey — which can mean a smaller harvest the next year. This may factor into your decision about which method you use.

The crush and strain method is a low-cost honey processing technique. You simply scrape the honeycomb off of the frame into a bucket, then crush the comb. Place a sieve in another bucket or container, pour the crushed comb into the sieve, and strain it overnight. This process may be best suited for hobby beekeepers who only have one or two hives. The honey will move more quickly in a warm room, and you may be able to get more honey if you stir the crushed combs a few times and scrape large wax flakes off of the inside of the strainer.

Cut comb honey is an elegant way to package and use your harvest. There are tools available for cutting and packaging comb, but a good-quality kitchen knife does the job nicely, as well. This method works only for frames that contain wireless wax foundation or no foundation — you cannot use this method with frames that use plastic foundations, and wired wax foundation will limit the sizes and shapes of combs you can cut. Choose frames that are fully capped and sealed — this indicates that the honey will have the right amount of moisture to prevent spoiling.

Importance of sorting and grading eggs

  • Sorted eggs bring more money to the investor than unsorted.
  • It reduces wastage.
  • separates eggs into grades of quality.
  • A bad egg can be dangerous to consume and negatively affect someone's health.

Importance of processing raw honey

  • improves the honey's appearance,
  • increases its shelf-life, and
  • kills yeast cells that can affect the taste of the honey.
  • It can prevent fermentation.
  • It delays crystallization.
  • removes impurities.

Preparation Of Planting Site

Preparing land for planting is one of the most important parts of cultivating abundance. Whether you're planting fruit trees, wildlife corridors, or an annual garden, prepping the soil in the first place is the best way to set yourself up for success over the long haul.
There are numerous methods that you can use for preparing land for planting that will help me make the living world around me come alive.

  • One-Time Tilling
    G7BAgriNotesP15
  • Mulch Alone
  • Sheet Mulching
  • Double Digging
  • Solarizing
    G7BAgriNotesP16
  • Animals (focus on chickens and pigs)

Crop Establishment

Categories of planting materials

Types of Planting Materials

  • Seeds (seasoning herbs, legumes, corn)
  • Seedlings (most vegetable crops)
  • Cuttings (cassava, potato, yam, ginger, dasheen, tannia, eddoes)
  • Suckers (banana, plantain)
  • Budded/ grafted plants (fruit trees)

Certain Factors need to be considered when you are choosing planting matter or seedlings from nurseries or plant shop.

Environmental Factors

  • The surroundings should be free from overgrown bushes, generally clean, no waterlogged conditions
  • Seedlings should be in conditions that are free from excess shade. If seedlings have too much shade they do not “harden off” and they have difficulties when they are transplanted.

Seedling Characteristics

The seedlings should:

  1. Be of the appropriate age (seedlings with 4-6 healthy green leaves)
  2. Be free from pests and diseases
  3. Have healthy white roots (good root development, with no balling of roots)
  4. Show vigorous, healthy growth
  5. Be of uniform appearance
  6. Have the proper Shoot to Root ratio (2:1)

Methods Of Planting Various Crops

  • Broadcasting: Generally, the seeds are broadcast-sown and later planked. This method of sowing is easier and area coverage is quick. However, uniform population cannot be maintained since the seeds are not placed in uniform depth and germination may not be uniform. The skill of the labour is important to sow the seeds evenly covering the entire field. Broadcast-sowing is normally practiced under dryland condition. Seed requirement is generally high for broadcast sowing.
  • Sowing behind the country plough: In this method, sowing is taken up behind the country plough operation. Seeds are dropped in the furrow opened during ploughing and subsequently covered while the next adjoining furrow is formed. Bold seeded crops like groundnut are sown by this method in drylands. It is important to take up sowing at the appropriate soil moisture so that the depth of sowing is uniformly maintained.
  • Drill sowing or drilling: Drill sowing is one of the best methods that provides uniform plant population since seeds are uniformly dropped in the furrows. Animal drawn or power operated seed drills are used for this purposes; seed cum fertilizer drill can also be used. By this way, depth of sowing can be maintained; fertilizer can also be applied simultaneously. Pelleting of small sized seeds may reduce the risk of irregular dropping. Since sowing is taken up in lines, intercultural operations can be easily practiced. It is possible to take up sowing of intercrops also.
  • Dibbling: In the method, a seed or few seeds are put in a hole and covered. Under irrigated condition, seeds are dibbled in lines or on the sides of the ridges maintaining optimum intra- row spacing, e.g. maize and cotton. Though this method is laborious and time consuming, it gives rapid and uniform germination and the requirement of seed is less than in broadcasting.

Methods of Plant Propagation

  1. Cutting
    This is cutting the vegetative part of the plant (leaf, stem, and root) and then planting it again to regenerate the whole plant. The three types of cutting are named after the plant part being detached/cut:
    • Stem cutting
    • Leaf cutting
    • Root cutting
      G7BAgriNotesP17
  2. Division
    This is a suitable technique for perennials (plants that live for more than two years). It involves dividing the plant by digging and moving it to an already prepared site. This helps the plant to rejuvenate and reduce water and nutrient competition.
    G7BAgriNotesP18
  3. Layering
    In this technique, the attached and bent branch of the plant is covered with soil and allowed to root. After the emergence and development of roots that specific part of the plant is cut and allowed to grow as a new plant. This is called ‘layering’.
    G7BAgriNotesP19
  4. Grafting
    This involves cutting a twig of one plant and joining it with the stem of another plant in such a manner that they form a unit and function as one plant. It is a bit of a complex process but allows you to bring the desired character to your plant. However, be sure to sterilize your hands and tools to make sure you don’t transfer any infections during the process.
    G7BAgriNotesP20
  5. Budding
    In this method, a cut is made in the rootstock and a single bud with little or no wood is inserted into it in such a way that they unite and grow as a new plant.
    G7BAgriNotesP21

Time of planting depends on the following factors

  • Soil and weather conditions
  • The kind of crop to be planted.
  • The time the produce is desired.

Crop Management

  • Adoption of best crop management practices improves crop productivity and can contribute to greater yields with improved quality.
  • Crop management is the set of agricultural practices performed to improve the growth, development and yield of crops.
  • It begins with a seedbed preparation, sowing of seeds and crop maintenance; and ends with crop harvest, storage and marketing.
  • The timing and sequence of agricultural practices depend upon several factors, such as winter or spring crops; harvested products such as grain, hay and silage; sowing methods-broadcast and row-crops; and, plants age, soil, climate and weather conditions.

Physical Methods Of Weeding

Manual control

Manual control is the use of the hands or handheld tools to deal with. An advantage of manual control is that it minimizes soil disturbance, and decreases the likelihood of erosion and seed germination.

Hand pulling

Hand pulling aims to remove the entire plant, including its roots, from the soil. This method is useful for small-scale infestations. It is best to hand-pull weeds after rain, when soil is moist. Sturdy gloves should be worn to avoid prickles, blisters or sap burns to the skin. It is not appropriate for all weed species, such as those with underground bulbs.
Hand tools such as broad knives and trowels can be used to remove underground parts of weeds (such as bulbs) that may reshoot. In some cases it is necessary to dig out the crown of the plant. This requires the growing part of the plant to be cut beneath the ground using a knife.

Grubbing or chipping

This method requires weeds to be dug out using a mattock or chip hoe. Depending on the plant, it may be important to expose the root system, and remove the crown.
In some cases, the mattock or chip hoe is used to cut the stem of the plant below the ground. This method is useful when the ground is hard. Gloves should be worn to avoid blisters.

Mechanical control

Mechanical control is the use of powered tools and machinery to manage weeds and is best suited to larger infestations. Care should be taken to minimise soil disturbance.

Slashing, mowing, dozing, pushing and felling

At times, controlling weeds using mechanical methods is preferred. However, care should be taken when machinery is used in the process.

Disturbing the soil with mechanical control can:

  • increase the likelihood of seed germination
  • damage native vegetation.

Bulldozers and chainsaws can be used on woody and tree weeds where they are pushed or felled and finally snigged (dragged away). These methods are only suitable in certain situations, as they create high levels of soil and vegetation disturbance. Also, shoots and seedlings require follow-up attention.

Grading or scalping the top layer of soil is an effective method of removing a seedbank. As this method greatly disturbs the soil, it is best suited for areas that are to undergo complete rehabilitation.

Earth Up
Earthing up refers to the act of heaping soil around the root zone of the potato plant. It is one of the primary production practices that must be done to increase the potato yield.

Advantages of earthing up

  • improves tuber formation/expansion/roots/pods formation
  • Improves drainage around the crop
  • Conserves water/soil
  • Facilitates harvesting of tuber crops
  • Root protection

G7BAgriNotesP22

Managing Plant Spaces

Thinning

When the young seedlings are too close to each other, they do not grow well. They do not find enough nourishment in the soil and their leaves do not have enough room to develop.
Leave only the strongest plants and remove the others. This is called thinning.
When you take out the seedlings that are small, diseased or misshapen, be very careful not to damage the seedlings which remain in the beds.
At the end, pack down the earth around the base of the plants and water them.

Staking

Vegetables with long and weak stems, for example beans and tomatoes, need stakes.
A stake is a stick firmly embedded in the earth. It is best to use hard wood, which does not rot.

Pruning

Certain vegetables, like tomatoes, beans, eggplant, need pruning.
Nip off surplus buds. Then there will be more fruits and they will be bigger.

Gapping

When the seeds fail to germinate, empty spaces are seen within the rows. This if left unfilled can make the farmer incur losses as a result of low yields. The filling up of these spaces or the replacement of ungerminated seeds is called gapping.

Advantages of thinning and gapping

Both thinning and gap filling ensures ideal plant population and optimum utilization of sunlight, space, nutrients, moisture and other inputs which ultimately increases yield.

Crop Hardening

  • Hardening, or "hardening off," is the process of allowing a plant to transition from a protected indoor or greenhouse environment to the harsh outdoor conditions of fluctuating spring temperatures, wind, and full sun exposure.
  • A gradual introduction of these outdoor stresses will cause the plant to accumulate carbohydrates, to trigger more root development, to reduce the amount of freeze-prone water in the plant, and to actually thicken its cell walls. Plant growth will change from soft and supple to much firmer and harder.

Hardening Timetable

  • Start the process of moving plants outdoors about two weeks before the weather will be favorable enough for the particular plant to live outdoors.
  • Check seed package instructions or inquire where you purchase seedlings as to when the plant can tolerate outdoor conditions. (Keep in mind that air temperature is often warmer than soil temperature.)
  • This Vegetable Planting and Transplanting Guide provides guidance for when some popular crops can be planted outdoors.

Hardening Process

  • When temperatures are at least 45-50ᵒ, move plants outdoors to a shady, protected spot.
  • Initially place in the shaded, sheltered location for two to three hours.
  • Gradually increase the amount of sunlight the plants receive over the two-week period. The last day or two, the plants can spend 24 hours outside.
  • Reduce the amount of water plants receive, but do not allow them to wilt.
  • Avoid placing seedlings outdoors on windy days.
  • Cold frames are excellent places to harden plants, but another spot that provides protection, such as a porch, will work.
  • Pay attention to the weather forecast; if temperatures will fall below 45ᵒ, be prepared to bring the plants inside.

Keep in mind that the overall goal of hardening is to slow the growth of the plants to allow them to adjust to a change in conditions. After proper hardening, even warmth-loving vegetables, such as tomatoes, can withstand an unexpected dip in spring temperatures.

Importance of crop management practices

Learners to work on them.

Soil Pollution Control

Def: Soil pollution - refers to anything that causes contamination of soil and reduces the soil quality.

  • It occurs when the substances causing the pollution reduce the quality of the soil and convert the soil inhabitable for microorganisms and macro organisms living in the soil.
  • Soil contamination or soil pollution can occur either because of human activities or because of natural processes.
  • However, mostly it is due to human activities. The soil contamination can occur due to the presence of chemicals such as pesticides, herbicides, ammonia, petroleum hydrocarbons, lead, nitrate, mercury, naphthalene, etc. in an excess amount.
    G7BAgriNotesP1

Causes of Soil Pollution

  • Soil pollution is a complex occurrence, and it can be triggered by a variety of things and activities, from the littering of cigarette butts to excess use of chemical fertilizers.
  • Every cause is linked with another. It is quite difficult to pinpoint one particular cause. However, the leading causes are listed below.
  1. Industrial Activity - Industrial activity has been the biggest contributor to the problem of soil pollution, especially since the amount of mining and manufacturing has increased. Most industries are dependent on extracting minerals from the earth. As a result, the industrial waste lingers on the soil surface for a long time and makes it unsuitable for use.
  2. Agricultural Activities - The utilization of chemicals has gone up tremendously since technology has provided us with modern pesticides and fertilizers. They are full of chemicals that are not produced in nature and cannot be broken down by it. As a result, they seep into the ground after they mix with water and slowly reduce the fertility of the soil.
  3. Waste Disposal - While industrial waste is sure to cause contamination, there is another way in which we are adding to the pollution. Every person excretes a certain amount of personal waste in the form of urine and feces. While much of it moves into the sewer system, there is also a large amount that is dumped directly into landfills in the form of diapers. Even the sewer system ends at the landfill, where the biological waste pollutes the soil and water.
  4. Accidental Oil Spills - Oil leaks can happen during the storage and transport of chemicals. This can be seen at most of the fuel stations. The chemicals present in the fuel reduces the quality of soil and make it unsuitable for cultivation. These chemicals can enter into the groundwater through the soil and make the water undrinkable.
  5. Acid Rain - Acid rain is caused when pollutants present in the air mix up with the rain and fall back on the ground. The polluted water could dissolve away some of the essential nutrients found in the soil and change the structure of the soil.

Effects Of Soil Pollution

Soil influences almost all aspects of our daily lives. Sometimes we fail to understand it. As a result of this, we sometimes fail to understand the effect that soil pollution has on our daily lives. Polluted soil means stunted crops or even a toxic underground water table. Some major effects of soil pollution are:

  • Effect on Health of Humans - Considering how soil is the reason we are able to sustain ourselves, the contamination of it has major consequences for our health. Crops and plants that are grown on polluted soil absorb much of the pollution and then pass it on to us. This could explain the sudden increase in small and terminal illnesses. The soil pollution can even lead to widespread famines if the plants are unable to grow in it.
  • Effect on Growth of Plants - The ecological balance of any system is affected due to the widespread contamination of the soil. Most plants are unable to adapt when the chemistry of the soil changes so radically in a short period of time. Fungi and bacteria found in the soil that bind it together begin to decline, which creates an additional problem of soil erosion.

    The fertility of the soil slowly diminishes, making land unsuitable for agriculture and any local vegetation to survive. The soil pollution causes large tracts of land to become hazardous to health. Unlike deserts, which are suitable for their native vegetation, such land cannot support most forms of life.
  • Decreased Soil Fertility - The toxic chemicals present in the soil can decrease soil fertility and therefore decrease the soil yield. The contaminated soil is then used to produce fruits and vegetables, which lack quality nutrients and may contain some poisonous substances to cause serious health problems in people consuming them.
  • Poisoning of the Underground Water Table - Soil pollution also leads to the poisoning of the underground water table. Since this water is stored beneath the layers of the soil, the toxins in the soil could easily percolate slowly and steadily into the water table.

G7BAgriNotesP2

Possible Solutions to Soil Pollution

Soil pollution is a complex problem that ought to be solved. It is essential that we all realize how important soil is to us.
The earlier we realize this, the better we will be able to solve the problem of soil pollution. It is a complex problem, and thus, it requires everyone, from an individual to the government, to work in complete unison. Listed below are a few things that could help in reducing soil pollution.

  • Reduced Use of Chemical Fertilizers - Chemical fertilizers do more harm than good. While proper amounts could enhance the fertility of the soil, an excess of it actually poisons the soil. The excess of chemical fertilizers could pollute the soil in several ways. It could mess with the pH levels of the soil. It could also destroy the good microorganisms in the soil. Not only that, but the runoff from such soils also causes water pollution as well. Thus, using chemical fertilizers is like a double-edged sword.
  • Reforestation and Afforestation Should Be Promoted - One of the major causes of soil pollution is soil erosion, which is caused due to deforestation.
    It is natural that, with an ever-growing population, humankind needs more and more space to expand their civilization. Often, it is achieved at the cost of the health of the soil.
    To prevent this from happening, reforestation of a deforested area should be promoted. Also, afforestation should be promoted and encouraged in the barren lands.
    The roots of the plants bind the soil particles together and even capture good microorganisms in the soil. It also ensures the maintenance of the underground water table.
  • Recycle and Reuse Products - These steps not only reduce waste generation but also ensure that soil pollution is reduced. At present, plastic forms a significant portion of the generated waste. More often than not, this wastes are buried in landfills.
    In these landfills, these plastics and other materials decompose slowly and release toxic materials into the soil. These toxic substances are very harmful to the health of the soil and are a major source of soil pollution.
    By reusing and recycling things, we would ensure that lesser wastes are dumped in these landfills, and this, in turn, would reduce soil pollution.
  • Promote Use of Natural Manure - Natural manure is one of the best sources of nutrients for the soil. It is harmless and completely organic. It adds essential nutrients to the soil and restores the health of the soil. It has no harmful by-products that could harm the soil or the environment in any way.
  • Create awareness - In order to ensure that a problem like soil pollution is solved, it is essential that every individual must get involved. It is with their involvement that things can work out better. Awareness programs could be designed so that people understand soil pollution better. If people are aware, they will help, even subconsciously.

Safe Farming Practices That Prevent Soil Pollution

Different types of soil conservation methods ensure long-term usage of land and keep it productive for future generations. Let’s consider their benefits in regard to soil conservation.

  • Conservation Tillage - The conservation tillage aims at addressing wind and water erosion by covering the earth with vegetation (either crops or their residues) and limiting the number of tilling operations. Another significant aspect is to choose the proper time for field operations, depending on the soil types. For example, clay ones are better to till after harvesting while other types are better to plow before seeding.
  • Contour Farming - The soil conservation method proves efficient in slope territories and suggests planting species along the contour. Rows up and down the slope provoke soil erosion due to water currents while rows along the contour restrain it. An impact of terracing is similar: it also helps to conserve soil and reduce its degradation processes.
    G7BAgriNotesP3
  • Strip Cropping - In this case, farmers combine high-growing crops with low-growing ones for the sake of wind protection, like when corn grows in strips with forage crops. The strip cropping practice works even better when high-growing crops are intensified in the sides where winds blow most frequently. An extra benefit is the organic matter material from the low crops.
    G7BAgriNotesP4
  • Windbreaks - As the name suggests, this soil conservation practice is used to reduce the power of winds and its disruptive effect on soil. These are trees or bushes to shelter crops from snow and winds planted in several rows. Depending on the number of rows, we can distinguish windbreaks properly (up to five rows) and shelterbelts (six and more).
    G7BAgriNotesP5
  • Crop Rotation - Crop rotation vs. mono-cropping farming suggests changing agro species instead of planting one and the same for many subsequent seasons.
    Farmers applying this soil conservation method reap numerous benefits. Crop rotation helps them improve the earth structure with diverse root systems, to mitigate pest establishments, and to add nitrogen to the land with legumes known as nitrogen-fixing plants.
  • Cover Crops - This soil conservation technique is another way to avoid bare soils and additionally benefit from planting cover crops – secondary species – in-between growing cash crops for different reasons like to:
    1. produce forage and grazing material for cattle;
    2. provide green manure;
    3. assist in weed control;
    4. retain moisture;
    5. ensure a natural environment for microorganisms and minor animals;
    6. balance nitrogen concentration (either releasing or accumulating it with certain plants).
  • Buffer Strips - These are trees and bushes on the banks of water bodies to prevent sediment, water wash offs. Their roots fix the soil to avoid slumping and erosion, canopies protect from excessive sunlight to water inhabitants and falling leaves are a source of organic matter and food of minor aquatic animals
    G7BAgriNotesP6
  • Integrated Pest Management - Pests are a great nuisance to agriculturalists and have been a major issue to tackle while chemicals poison nature leaking to water and the atmosphere. It is important to eliminate synthetic herbicides replacing them with organic ones or establishing biological enemies of pests whenever possible, rotating crop species to minimize increasing pest populations in the same field for years, and using alternative techniques in complex.

Benefits of Soil Conservation

Humankind in general and farmers in particular benefit from numerous advantages of soil conservation. This agricultural practice contributes to sustainability in a number of ways:

  • Boosts earth quality and productivity. Maintaining the natural environment for earth-dwelling organism’s increases fertility and reduces the necessity of chemical fertilizing, thus boosting yields and saving costs at the same time.
  • Mitigates erosion. Soil conservation methods to reduce erosion and depletion help agriculturalists to avoid the expansion of new lands when territories become infertile.
  • Promotes water infiltration and increases its storage. The soil conservation technique of minimum tillage vs. conventional plowing affects soil moisture by reducing cracking and evaporation as well as rising the infiltration rate.
  • Aids air and water purification. The importance of soil conservation relates to water supplies, and the earth functions as a natural filter to purify water. Soil conservation mitigates the concentration of pollutants and sediments. In its turn, water is the basic condition to dissolve nutrients for plants. Soil carbon sequestration and reduced chemical applications contribute to air purity, too.
  • Gives food and shelter for wildlife. Land with growing vegetation is a living environment for animals; it is not only the source for nourishment but their home as well.
    “When the well is dry, we know the worth of water.”
    – Benjamin Franklin, Poor Richard’s Almanack for 1733

Water Conservation Methods In Farming

  • Mulch - We cannot overemphasize the importance of mulching. Mulch is something laid on the surface of the soil to protect the soil from the air, water and the sun.
    To mulch, first weed the soil then spread a thick layer of organic mulch on the soil. Examples of organic mulches are:
    1. Chopped leaves
    2. Straw
    3. Grass clippings
    4. Wood chips
    5. Shredded bark
    6. Pine needles
      Mulching helps save time and labour as it discourages weeds and pests and conserve water through reduced evaporation.
      G7BAgriNotesP7
  • Irrigate early morning or dusk - At the hottest and driest time of the year it is most efficient to water your crops in the morning or in the evening. This avoids water loss from evapotranspiration (water evaporating from the land and leaves of plants). Evaporation happens most in the midday sun.
    G7BAgriNotesP8
  • Don’t over-water - It’s a common misconception that plants would be happy with lots of water all of the time. But often farmers are over-watering crops unnecessarily. Save water! Plants will only take what they need and then all that extra water goes to waste through evaporation, run-off or infiltration.
    G7BAgriNotesP9
  • Check for leaks and damage - If you’ve already invested in an irrigation system, make sure you’re not losing any water before it reaches the crops. Irrigation pipes and equipment can become damaged or blocked which causes leaks. Thoroughly check your equipment for leaks and repair them so that all the water you have gets to the crops.
    G7BAgriNotesP10
  • Drip Irrigation - Drip irrigation systems deliver water directly to a plant’s roots, reducing the evaporation that happens with spray watering systems. Timers can be used to schedule watering for the cooler parts of the day, further reducing water loss.

Importance Of Water Conservation In Farming

  • It minimizes the effects of drought and water shortages. By reducing the amount of water we use, we can better protect against future drought years.
  • It helps to preserve our environment. Reducing our water usages reduces the energy required to process and deliver it to homes, businesses, farms, and communities, which, in turn, helps to reduce pollution and conserve fuel resources.
  • It helps to preserve our environment. Reducing our water usages reduces the energy required to process and deliver it to homes, businesses, farms, and communities, which, in turn, helps to reduce pollution and conserve fuel resources.

Water Retention Structures To Conserve Surface Runoff

Water Retention Structures means a structure designed to retain a large volume of water
There are various methods of water retention to conserve surface runoff, this include:

  • Water retention Ditches - Ditches are man-made waterbodies that are used mainly to drain the land.
    G7BAgriNotesP11
  • Earth Basins - is an area of land where all flowing surface water converges to a single point
    G7BAgriNotesP12
  • Water retention pits – is an artificial pond with vegetation around the perimeter and a permanent pool of water in its design.
    G7BAgriNotesP13

Minimum Tillage Practices That Conserve Water In Farming

Tillage practices refer to the tillage operations carried out between the harvest and following sowing/cultivation operation. Tillage, crop rotation and soil cover are practices related to pesticide and nutrient runoff, soil erosion, soil compaction etc. Some of the minimum tillage practices include:

  • Use of herbicides;
  • Uprooting/slashing;
  • Use of cash crops;
  • Limiting cultivation to the point planting;
  • Proper timing of cultivation;
  • Mulching

There are other different tillage practices distinguished are:

  • Conservation tillage
  • Conventional tillage
  • Zero tillage

Conservation tillage can include the following systems:

  • Strip tillage or zonal tillage refers to a system where strips 5 to 20 cm in width are prepared to receive the seed whilst the soil along the intervening bands is not disturbed and remains covered with residues. The system causes more soil disturbance and provides less cover along the rows than zero tillage.
  • Tined tillage or vertical tillage refers to a system where the arable land is prepared with equipment which does not invert the soil and which cause little compaction. For this reason, the surface normally remains with a good cover of residues on the surface.
  • Ridge tillage is a system of ridges and furrows. The ridges may be narrow or wide and the furrows can be parallel to the contour lines or constructed with a slight slope, depending on whether the objective is to conserve moisture or to drain excess moisture. The ridges can be semi-permanent or be constructed each year which will govern the amount of residue material that remains on the surface.

Conventional tillage

Refers to the arable land treated by conventional tillage which involves inversion of the soil, normally with a moldboard or a disc plough as the primary tillage operation, followed by secondary tillage with a disc harrow.

Zero tillage

Refers to the arable land on which no tillage is applied between harvest and sowing. Zero tillage is a minimum tillage practice in which the crop is sown directly into soil not tilled since the harvest of the previous crop. Weed control is achieved by the use of herbicides and/or appropriate mulching and stubble is retained for erosion control.

Agroforestry

It’s the cultivation and use of trees and shrubs with crops and livestock in agricultural systems.

Characteristics of Agroforestry

While selecting tree species for agroforestry systems, the following desirable characteristics should be taken into consideration. Though all desirable characters are not found in a single species, but their multiple uses are taken care of.

  1. Tree species selected should not interfere with soil moisture
    • Tree species selected for agroforestry should have very less water requirement
    • Should not compete with main agricultural crops for water.
    • Tree species should be deep tap rooted so that they can draw water from deep strata of the soil.
  2. Tree species should not compete for plant nutrients
    • Tree species should not utilize more plant nutrients
    • They should help in building soil fertility,
    • Leguminous tree species which fix atmospheric nitrogen in their roots should be prefered.
    • The root system and root growth characteristics should ideally result in to exploration of soil layers that are different to those being trapped by agricultural crops.
  3. Tree species should not compete for sunlight
    • Tree species should not interrupt sunlight falling on the crops.
    • Tree species should be light branching in their habit.
    • Trees permit the penetration of light into the ground and promote better crop, pasture growth and yield.
    • Tree species can withstand pruning operation if it possess dense canopy.
  4. Tree species should have high survival rate and easy establishment
    • Trees species should have high survival percentage,
    • Leave little or no gaps after transplanting.
    • Hardy tree species are easy to establish.
    • They have less mortality percentage because they can tolerate transplanting shocks easily.
    • Trees should have the ability to regenerate lateral roots within a short period of time after transplanting.
  5. Tree species should have fast growing habit and easy management
    • Tree species for agroforestry system should be essentially fast growing,
    • Rapid growth, especially in the early years,
    • Tree should have short rotation (the period between planting and final harvesting)
    • Fast growing species
  6. Tree species should have wider adaptability
    • A tree species selected for agroforestry combinations must have a wider adaptability.
  7. Tree species should have high palatability as a fodder
    • Most of the Indian farmer’s rear livestock separately and cut and carry method of fodder production is quite prevalent.
    • Therefore, in agroforestry, farmer must select those tree species which are palatable to livestock and had a high digestibility.
  8. Tree species should have shelter conferring and soil stabilization attributes
    • Some tree species, because of their inherent growth habit and adaptability, are especially helpful in providing protection for soils, crops and livestock.
  9. Tree species should have capability to withstand management practices
    • Many agroforestry systems demand extensive pruning and lopping of the trees in order to maximize production. In such cases, the trees must be able to withstand such treatment without drastically restricting growth rate.
  10. Tree species should have nutrient cycling and nitrogen fixation attributes
    • Within an agroforestry system, trees can play an important role in recycling nutrients, leached down through the soil profile and minerals released from weathering parent material such as rocks and sediments.
    • These nutrients are used in the growth and development of the tree, many returning to the top-soil in form of dead leaves, twigs, flowers and seeds which slowly decompose on the surface, or are eaten by animals.
    • Although all trees play some role in maintaining the nutrient status of the soil through recycling.
    • Deciduous trees drop most of their leaves in autumn leaving a thick mat of leaves on the ground, whereas most evergreen species maintain some level of litter fall throughout the year.
    • Another important factor is the ability of many tree species to convert atmospheric nitrogen into organic nitrogen for their own use through complex symbiotic relationship between Rhizobium bacteria and their fine roots.
    • The bacteria form nodules on the roots which can convert nitrogen gas, as it is in the atmosphere, into usable nitrogen for the plant.
    • The litter of these nitrogen fixing trees is generally high in nitrogen, thus increasing the nitrogen status of the soil.
  11. Tree species should have thin bark
    • Species selected for agroforestry combinations should not shed its bark regularly but it should retain for longer period as bark shedding creates unhygienic conditions for under-ground crop.
  12. Tree species should be free from chemical exudations
    • The species selected for agroforestry combination must be free from chemicals as these chemicals affect the growth of under-ground crops.
  13. Tree species should have easily decomposable leaves
    • The suitable tree species for agroforestry will be that one in which fallen leaves decompose with fast rate.
    • The leaves of most of the legume tree species are small in size, decompose quickly and easily, and add a large quantity of organic matter and nutrients to the soil.
    • Tree species having broad leaves such as teak, mango and banyan should not be preferred for agroforestry system.
    • They contain more fibre matter and also require longer time for decomposition. Further, broad leaves when fall on the tender crop plants, block their photosynthetic activities.
  14. Tree species should have their multiple uses
    • The selected tree species should have multiple uses.
    • The tree should yield more than one of the main produce like fuelwood, leaf fodder, edible fruit, edible flower and fibre.
  15. Tree species should have high yield potential
    • High yield potential is the most important criterion of selection of tree species for agroforestry systems as the main aim is to obtain overall more output per unit area. Care should be taken before collection of seeds and seedlings that they are being procured from reliable source.

Suitable tree species for agroforestry 

  • Leucaena leucocephala
  • Gravillea robusta
  • Calliandra catothrysus
  • Mangifera indica
  • Sesbania sesban
  • Lantana camara
  • Cajanus cajan

Characteristics Of Agricultural Crops For Agroforestry

  1. Agricultural crops should be short duration and quick growing.
  2. They should be at least partially tolerant to shade.
  3. Most of them should belong to Leguminous family.
  4. They should respond well to high density tree planting.
  5. They should bear some adverse conditions, like water stress and/or excess of watering;
  6. Crops should return adequate organic matter to soil through their fallen leaves, root system, stumps, etc.
  7. Crops should appropriately be fitted in intensive or multiple cropping system.

Advantages/importance Of Agroforestry

G7BAgriNotesP14

  1. Saves labour since some operations can be done at once for both plants and trees
  2. Gives higher combined yield
  3. Provide wide variety of agricultural produce
  4. Reduces the risks of total failure
  5. Crops benefit from nitrogen fixing trees.
  6. Trees help in holding the soil firmly
  7. Some trees act as livestock fodder.
  8. Provides a wider variety of agricultural produce.

Disadvantages of Agroforestry

  1. Mechanization is difficult.
  2. Use of pesticides and fertilizer may be difficult.
  3. Productivity may suffer because the skills for managing the different trees
Thursday, 10 November 2022 12:11

Gardening Practices - Agriculture CBC Grade 6 Notes

Organic Gardening Of Legumes.

Legumes include:

  • Pigeon peas.
    G6agriNotesP2
  • Common beans
    G6agriNotesP4
  • Dolichos lablab beans
  • Green grams
    G6agriNotesP3
  • Groundnuts
    G6agriNotesP5
  • cowpeas
    G6agriNotesP6
  • The roots of legumes have small swellings called root nodules where some very tiny living things called nitrogen fixing bacteria live.
  • These bacteria take up nitrogen from the atmosphere and convert it into
  • The nutrients are the absorbed by the legume crops to make proteins.

Meaning Of Organic Gardening.

  • Organic gardening refers to a system of growing crops using natural farming techniques and materials instead of artificial chemicals.
  • In organic gardening, compost, compost manure and animal manures are used instead of artificial fertilizers
  • The organic manures feed the soil which in turn feeds the crops with nutrients leading to strong and healthy crops.
  • Healthy crops are able to tolerate the effects of drought, pests and diseases which are the main causes of low yields.
  • Organic manure enables the soil to hold enough moisture for crop growth.
  • In organic gardening, artificial chemicals such as pesticides are not used.
  • Chemicals also cause harm to animals including beneficial insects that feed on pests or those that pollinate our crops.

Establishing a legume crop.

  • Proper seedbed preparation helps to remove weeds and loosen the soil for easy sowing of seeds.
  • Organic manures should be incorporated into the soil during seedbed preparation.
  • Seeds for planting should be healthy, whole and dry.
  • The selected seed should also be suited to the climate and soil of a given place.
  • Green grams, cow peas and pigeon grow well in semi-arid areas because they are drought resistant.
  • Garden peas require cool and moist areas.
  • To ensure seeds germinate with ease, it is important to show seeds at proper planting depth. I.e. between 2.5 cm to 10cm.
  • Two to three seeds can be planted per hole using correct spacing.
  • Proper spacing ensures that the crops receive adequate nutrients, water, sunlight and air for proper growth.

Caring for growing legume crops

  1. Irrigation if there is no rainfall
  2. Waterlogged seedbed should be avoided
  3. Application of water directly on the leaves should be avoided.
  4. Mulching should be done to retain moisture
  5. Gapping to replace the seedlings which fail to germinate.
  6. Thinning to remove excess seedlings.
  7. Correct number of plants per hole to reduce competition for nutrients, water and light
  8. Pests should be regularly controlled using the appropriate methods. i.e. by:
    • Hand picking
    • spraying
  9. Infected crops by diseases should be uprooted and then destroyed by burning.
  10. Weeding during raining season should be avoided to prevent rapid spread of diseases
  11. Climbing legume crops should be supported to grow upright. .

Right stage of harvesting.

  • Some legumes are harvested while green and eaten as vegetable such as beans
  • and Some are left to dry and harvested when they have lost their green colour. peas
  • Mature legume pods turn brown and dry
  • To determine when groundnuts are mature a few plants are lifted to observe the pods before harvesting all the groundnuts
  • Harvesting should be done during dry weather conditions.

Innovative Ornamental Gardening

  • Ornamental gardening refers to cultivation of planting with the aim of enhancing beauty of a place or landscape.
  • Some crops can also be grown in a pattern that can make our surroundings beautiful
  • Ornamental cropping can be done in . learning institution, hospitals, hotels, public parks, homes and sports fields
  • Innovative ornamental patterns can also be made by using plants in containers or on the ground.
  • The plants used could be flowers, trees, shrubs or food crops such as sugarcane, bananas, fruit crops or vegetables.
  • When food crops are used for ornamental gardening, they bring beauty and also contribute to food security.

Growing Media For Ornamental Crops

  • Ornamental plants can be established in two ways:
    • Using soil as a base to support the roots of ornamental plants.
    • Using soilless media as a base to support the roots of the ornamental
  • The surface on which plants grow is called plants growing medium.
  • Soil is a natural growing medium for plants
  • Soilless medium can also be used to establish ornamental crops
  • The nutrients can be supplied from liquid manure (called compost tea) when soilless medium is used.
    Note: Compost tea is organic compost manure mixed with water.

Some of the medium for growing ornamental crops include:

  • Peat moss
  • Coco peat
  • Sand
  • Gravel
    G6agriNotesP7

Establishing ornamental plants in soilless media.

  • Identify a soilless media to use in a container.
  • Measure the quantity of the soilless medium that can fill about three quarter of each available container
  • Put the identified soilless medium in a container or containers.
  • Add some water to moisten the soilless medium.
  • Plant an ornamental plant or crop of your choice in the container garden(s)
  • Select a suitable site and place your container garden in a pattern that suites your preference
  • Apply liquid manure or compost tea around the base of ornamental plants from time to supply nutrients.

Preparing Compost Tea

Tools

  • Two 20 litres buckets
  • Clean fresh water
  • Organic manure
  • Stick for stirring
  • strainer

Steps

  • Scoop organic manure in an empty 20 litre bucket up to a third of the bucket
  • Add clean fresh water(not chlorinated, rain water the best) to fill the bucket and stir with a stick
  • Set aside the mixture to brew for 12 to 36 hours away from direct sunlight.
  • Strain the compost using a clean piece of cloth return the leftover to a compost bin or use in the plant as mulch.
  • Dilute the mixture in the ratio of 1:3 only if it is very dark in colour

G6agriNotesP8

Note:

  • The volume of water should be twice that of liquid manure
  • Do not use unfinished compost in your compost tea. Unfinished tea may contain living things that could damage plants
  • Use the compost tea once a week to avoid scorching of plants.

Importance of innovative ornamental cropping.

  1. Beautify the environment
  2. Source of food
  3. Supply fresh air for human beings and other animals.
  4. Can be used as beautiful photograph background when taking photograph.
  5. Some act as windbreakers hence less destruction of built environment.
  6. Require less space.

Moisture Bed Gardening

How To Prepare A Raised Moisture Bed

Tools and Materials.

  • Topsoil
  • Compost manure or farmyard manure
  • Dry grass
  • Kitchen wastes
  • Gravel
  • Fork jembe
  • Wooden pegs
  • Ten 90cm long fitos
  • A panga
  • Claw harmer
  • A thick polythene

Steps.

  • Select a suitable site for your garden and clear any vegetation on it.
  • Measure the land on the ground so that it is 1m wide and desired length.
  • Fix 90cm long wooden stakes about 30cm below the ground along the edges of the marked areas.
  • Inside the framework created by the stakes, lay thick polythene sheet on the ground.
  • Lay a 30cm layer of hard-core or gravel carefully at the bottom
  • Place a 10cm layer of dry grass or kitchen waste such as fruit and vegetable peels on top of the gravel
  • Add a 20cm layer of topsoil mixed with compost manure
  • Your raised moisture bed is now ready for crop establishment.

Note: You can obtain the topsoil from another place or dig out the topsoil from the same site before laying the polythene sheet.

G6agriNotesP9

Taking care of the crop on moisture bed.

  • There is constant production of crops throughout the year.
  • Soil is full of organic manure
  • Many crops can be planted on a small area leading to high yields
  • Some crops that don’t do well in a normal environment can be established here
  • There is high water retention.

G6agriNotesP10

Thursday, 10 November 2022 12:10

Domestic Animals - Agriculture CBC Grade 6 Notes

Practices In Rearing Small Domestic Animals.

Domestic animals that are commonly reared include:

  • Rabbit
  • Hen
  • Cat
  • Dog
  • Guinea pig

Importance Of Small Domestic Animals

G6agriNotesP1

Rabbit

  • Provides meat
  • Provides fur which is processed to make handbags, hats coats and pillows.

Cat

  • Repel rats
  • Kept as a pet

Poultry

  • Source of meat and eggs
  • Provide manure

Guinea pig.

  • Provide meat
  • Kept as pets
  • Provide manure
  • Research canters use them to do experiments on diseases

Dog

  • Alerts when strangers or wild animals come to our homes
  • Kept as a pet

Note:

  • The small domestic animals can be reared in small pieces of land.
  • They can also be reared in urban areas where space is limited.
  • They multiply very fast therefore ensure continuous source of income.
  • They require less labour to bring up compared to the large domestic animals.

Routine Practices In Rearing Of Small Domestic Animals.

  • Small domestic animals should be fed with adequate and nutritious feeds every day.
  • They should be provided with clean water to drink.
  • The drinking equipment should be cleaned daily before putting fresh drink
  • Places where the animals live should be cleaned regularly and disinfected.
  • Tools and equipment used in cleaning the animal houses should also be cleaned.
  • Excess animals can be sold so as to earn some income.
  • Animals should be treated by a veterinarian or an animal health specialist.

Safe handling of small domestic animals.

  • We may be required to restrain animals when doing some routine practices.

How to handle small domestic animals

  • Visit the school farm or local farmer and find out the following:
    • How to approach the animals when one wants to restrain them for various
    • reasons How to hold or handle the animals when carrying out some routine
  • Ask the farmer or the person in charge of the small domestic animals to allow practices you to demonstrate how to safely hold or handle the animals

What's covered;

SOIL EROSION CONTROL

Meaning of soil erosion

  • Soil erosion is the process by which topsoil is gradually removed from one place, transported and then deposited to another place by action of water, wind animals and human beings.

Agent of soil erosion

  • Water
  • Wind 
  • Animal
  • Human being

Types of soil erosion

  1. Splash erosion
  2. Rill erosion
  3. Sheet erosion
  4. Gully erosion

SPLASH EROSION

  • Is the first stage in the soil erosion process by the action of water.
  • When raindrops hit the bare ground, the soils broken into soil particles.
  • The lighter soil particles are removed and splashed in various directions onto the soil surface by the force or energy of the raindrops.
  • Therefore, small circular depressions can be seen where soil particles have been removed by splash erosion.
  • Splash erosion occurs mainly during heavy rainfall that falls for short duration.
  • Splash erosion causes more damage to soil on sloped land than flat land.
  • The bigger Raindrops have more force or energy than smaller raindrops and therefore cause more splashing.
  • Is also called raindrop erosion because it results from effect of raindrops on the soil.

Demonstrating splash erosion
Pupils activity

Identifying splash erosion in the environment
Pupils activity

SHEET EROSION

  • Sheet flow refers to a thin and uniform layer of moving water.
  • Sheet erosion occurs when a thin layer of soil is removed uniformly by surface runoff on a flat or gently sloping bare land.
  • Sheet erosion occurs when there is heavy rainfall that falls for a short duration
  • In such situations, soil is unable to absorb much of the rainwater which therefore flows as surface runoff.
  • The heavy raindrops splash soil particles while the surface run off carries the fine soil particles, carrying most of the nutrients.
  • It is not easy to notice sheet erosion because the topsoil is removed evenly. By the time this type of erosion is detected, most of the topsoil will have been lost.
  • Most common on recently cultivated land situate on smooth gentle slopes

Signs/indicators of sheet erosion are

  1. Stones below the topsoil are exposed.
  2. Roots of plants including crops, grass and trees are exposed.
  3. Eroded soil and crops remains are deposited at the lower areas of the slope.
  4. Crops yields reduce season after season because of declining soil fertility.

Identifying splash erosion in the environment
Pupils activity

RILL EROSION

  • Rill erosion occurs in places where continuous sheet erosion has taken place.
  • In such places, the runoff carrying soil particles concentrates in small channels or rills down a slope.
  • Several small rills join to form a large rill
  • As runoff flows along the rill, soil is eroded on the sides and the bottom of the rills.
  • The rills reach a depth of up to 30 cm.
  • Rill erosion can be observed when a freshly cultivated land experiences heavy rainfall immediately after cultivation.
  • Rills can easily be removed during normal cultivation of land tools such as hoes and jembes.
  • Rills can also be observed on overgrazed land as well as on paths created due to frequent movements by humans.

Observing rill erosion in our environment
Pupils activity

GULLY EROSION

  • Gullies are long deep ditches with steep sides
  • They are mainly formed on steep slopes where rill erosion has taken place for a long time.
  • As the run off flows down the slope, it widens and deepens the rills, thus creating deep ditches.
  • Gullies are not easy to remove by means of normal cultivation using tools such as hoes because of their great depth.

Identifying gully erosion
Pupils activity

Observing gully erosion in our environment
Pupils activity

METHODS OF CONTROLLING SOIL EROSION

  • To control soil erosion effectively, it is important that the soil surface is protected by suitable ground cover
  • The ground cover controls splash by intercepting the rain drops before they hit the soil particles
  • Ground cover also prevents sheet erosion by reducing the speed of runoff and therefore allowing most of the water to infiltrate into the soil.
  • Ground covers include
    1. Cover crops
    2. Mulches
    3. Growing grass or vegetation on land and on drainage channels
  • Trees also prevent the soil against erosion by wind in various areas especially in arid and semi-arid areas.
  • Gabions or check dams constructed across gullies to trap the soil but allow water to pass through

Identifying methods of controlling soil erosion

  1. Cover crop
  2. Contour ploughing
  3. Strip cropping
  4. Crop rotation
  5. Conservation tillage
  6. Avoid overgrazing
  7. Reforestation
  8. Improving drainage
  9. Building terraces

Controlling soil erosion in our environment
Pupils activity

Importance of soil conservation in our environment

  1. It helps protect natural resources and water sheds, restores habitats for plants and wildlife, improves water quality and makes soil healthier.
  2. Soil is one of the most valuable resources for any agricultural activity. We depend on it for food, employment and income. Some domestic animals also depend on soil for their pasture.
  3. If soil is washed away, our land will be infertile, as a result water bodies will be destroyed and people can face hunger.
  4. Take measures to prevent soil erosion by taking good care of the soil.
  5. Apply appropriate soil erosion control measures if soil erosion has taken place. The measures will prevent further loss of soil and thus restore health and beauty of our environment

For pupils activity list visit/download Pupil's Activity for Agriculture (all activities) - Agriculture CBC Grade 6 Notes

WATER CONSERVATION

  • It is preservation, control and development of water.
  • You can conserve water by
    • practising mulching,
    • shading and cover cropping,
    • sunken bed, 
    • shallow pits

Sunken beds

  • Sunken beds can be used in dry areas or during dry season.
  • They can be used either as nursery beds or seedbeds.
  • Because the base of the sunken bed is hidden away from strong sunlight and wind, the rate of heat loss is minimal.
  • Sunken beds therefore conserve more moisture than flat or raised beds.

Preparing a sunken bed 

Pupil's Activity

Tools

  • A tape measure
  • Panga
  • Slasher
  • Jembe
  • Shovel
  • A rake
  • A well decomposed compost or farmyard manure.

Steps 

  • Measure the plot of land 1 m wide and any desirable length
  • Clear the vegetation on the measured plot.
  • Dig out the top fertile soil and keep it aside.
  • Dig out the subsoil and heap it on the edges to make an embankment or dyke
  • Mix the topsoil kept aside with some well rotten manure, for every one wheelbarrows of top soil, add one wheelbarrow of manure
  • Return the moisture in the trench leaving a depression of about 10 cm
  • Water the seedbed to make the soil moist.
  • The sunken bed is now ready to be used as a seedbed
    Note: you may also use the sunken bed as a nursery bed to raise young vegetable
    seedlings before you transfer them to the seedbed.

Shallow Pits

  • Also called planting pits or zai pits
  • Planting pits are used as method to prevent water runoff and thereby increase infiltration and reduce erosion
  • The pits trap runoff and thus increase water infiltration into the soil.
  • Mostly practiced in dry regions

Preparing shallow pits

  1. Select a suitable site in the school compound
  2. Dig a pit 60cm×60cm×60cm. Keep the top soil separately.
  3. Put light organic at the bottom of the pit, i.e. dry grass and leaves
  4. Add a layer of top soil mixed decomposed manure.
  5. Leave a depression about 15cm for collection of water and a place for mulching

Importance of conserving moisture in a seedbed

  • Leads to better and more reliable crop yields

For pupils activity list visit/download Pupil's Activity for Agriculture (all activities) - Agriculture CBC Grade 6 Notes

Living Better With Wild Animals

  • Repellents such as smoke, noise and certain smelly substances can keep off wild animals from our crops and domestic animals.
  • Deterrents methods are used to prevent wild animals from damaging our crops and domestic animals. E.g. use of fence, use of light,

Pupils activity

Using fences to keep away wild animals

  • Wire mesh fence and thick thorny bushes fence helps to keep wild animals away from crops and domestic animals
    Pupils activity

Using of innovative light to control wild animals

  • Animals fear random sounds deflecting and blinking or flashing lights.
  • These devices keep wild animals away at night from crops
  • Light bulbs can be installed near cattle bomas or around the gardens
  • Planning how to make innovative deterrents
    Pupils activity

Constructing Innovative Deterrents

Pupils activity

Making sound deterrents

  • Using a device that can produce some loud noise can also help to scare the wild animals
  • The following can be used as deterrents to keep away birds:
    • Spoilt cassette tapes
    • Old reflective Compact Disc (CDs)
    • Reflective tapes.
      Pupils activity

Making a bird feeding table

  • Safe traps can be used to trap some wild animals which then be released back to the forest.
  • During the day birds can be kept away by hanging shiny reflective CDs or reflective ribbons such as shiny party streamers near the garden.
  • The light reflected from the shinny surfaces of such objects distracts the vision of birds.
  • The birds are also scared by sound reflective ribbons make when it is windy.
    Pupils activity
  • Make your feeding table using the locally available materials
  • Select a suitable site to place  the bird feeding table.
  • Regularly, placr some food remains and water on the bird feeding

Importance Of Deterrents In Conserving Wild Animals

  • Wild animals are important because they support our tourism industry which earns revenue for our country.They should not be killed when they come to our farms.
  • Using deterrents helps us to live better or coexist with the wild animals in our environment.
  • Aids in saving the life of wild animals.
  • Birds are a source of beauty and happiness to human beings
  • They trap wild animals which are then released back to the game parks
  • Reflective ribbons scare away birds during the day.

Creeping Crops

  • Creeping crops are plants that naturally spread their weak stems horizontally on the ground rather than vertically.
  • As stems of these plants spread, they produce new plants along the stem.
  • Creeping crops can serve as good cover crops.

Identifying creeping crops

  • Sweet potatoes
  • Strawberries plant
  • Watermelon plant
  • Pumpkin plant
  • Cucumber plant
  • Calabash plant

Planting materials for creeping plants

Identifying planting materials

  • Seeds e.g. cucumbers, pumpkins, melons
  • The seeds are obtained from mature fruits of some creeping crops
  • Seeds can also be bought from reputable seed suppliers – agricultural research stations
  • Vegetative materials e.g. splits and vine cuttings
  • Planting materials for some creeping crops are mainly obtained from living parts of the same plants.
  • Vegetative planting materials can be obtained from farmers, agricultural training centres
  • Pupils activity

Collecting planting materials

  • Slasher/panga/jembe/rake/a shovel/manure
  • Seeds can be obtained from the mature fruits and then dried.
  • Vine cuttings and splits can be obtained from the same plants.
  • They can also be obtained from agricultural training centres and horticultural Research stations

Pupils activity

Planting Creeping Crops

  • A planting site should be prepared before planting the crops.
  • Before planting the creeping crops, we should also prepare the planting materials for better establishment.

Preparing a seedbed

Tools

  • Slasher or panga
  • Jembe
  • Rake
  • Shovel
  • Fully ddecomposed manure

Steps

  • Clear any vegetation on selected site
  • Dig the land to loosen the soil and remove all weeds.
  • Break all the large soil clods to obtain fine soil
  • Spread well rotten manure over the surface of the land. Mix the manure with soil
  • Level the seedbed

Preparing planting materials from seeds

Tools

  • Knife/water/open container/mature fruit of a creeping crop

Steps

  1. Cut a ripe fruit into two parts
  2. Scoop out the seeds
  3. Clean the seeds with cold water to remove pulp
  4. Spread the seeds in an open container and dry them in the sun for a few days.
  5. Select the good seeds for planting and store them in cool dry place.
    NOTE : Seeds selected for planting should be
    • clean,
    • whole/ unbroken
    • free from insect damage,
    • big in size and of uniform colour.

Preparing other planting materials(splits and vines)

  • To raise new strawberry plants, a strawberry with many crowns is lifted from the soil and then broken into several parts called splits
  • Each split has some roots, stem and leaves. It grows into a new plant once it is planted in a hole.
  • Young vines of sweet potatoes are cut into several pieces each measuring 30 cm.
  • Each of the vine cuttings will develop roots when the bigger part of it is buried in the soil.
  • Planting

Pupils activity

Care For Young Creeping Crops

  1. Watering or irrigating the crops.
    • Water the crops when the weather is dry
    • Best time for watering the crops is early in the morning or in the evening when it is cool
    • Ensure that the soil is most and not too wet
    • Avoid applying water directly on the leaves
    • Drip irrigation should be encouraged since it does not over wet the soil and leaves which can lead to fast spread of diseases.
  2. Mulching the crops
    • Helps to conserve moisture as well as reduce weed growth
    • Also helps to obtain clean fruits since fruits do not touch the soil
  3. Weeding
    • Remove weeds from time to time throughout the growing season.
    • When using tools to weed do not damage the roots, vines of the crop.
  4. Protecting the crop from physical damage.
    • Make a structure to protect the creeping crops from damage by humans and animals.
  5. Shading
    • Provide a shade in case it is very hot and dry during the growing season.
    • It helps to reduce wilting of crops due to too much evaporation an transpiration.
  6. Top dressing with manures
    • Apply organic manure around each crop at the base from time to time
    • You can use compost manure from animals
    • Adequate nutrients help creeping crops to grow fast and produce big leaves and fruits
  7. Training the crops
    • Build structure to support your vine crop to grow upwards.
    • You can also train the young crop by moving the tip of the trailing vines to the desired place.
    • Helps the plant to receive adequate sunlight and occupy small space within a given environment

Conservation project: Managing creeping crops

Pupils work

  • Managing creeping crops means taking care of the established crops so that they can grow healthy and produces high yields.
  • A project schedule plan can be used to effectively manage creeping crops.
  • Everyone involved should take responsibility in ensuring the crops are effectively managed.

Harvesting Creeping Crops

  • Creeping crops should be harvested when the produce is mature and ready for consumption or marketing.
  • Harvesting the crop at the right stage is important because harvesting leads to wastage of the produce.
  • Harvesting should be done carefully to avoid destruction of produce.

How to identifying the right stage of harvesting crops

Pupils activity

How to harvest creeping crops

  • Produce from creeping crop should be harvested appropriately to avoid wastage
  • Poor harvesting may lead to loses during harvesting

Pupils activity

Harvesting and disposal of creeping crops produce

Pupils activity

Value of creeping crops in our environment

  • Creeping crops are important because they provide food for our communities
  • Watermelons, strawberries provide vitamins which protect us against diseases
  • They are good sources of fibre which improves digestion
  • Creeping crops protect the soil against erosion due to their trailing growth habit
  • Creeping crops can be grown any time of the year. Many of them have no seasons. They can provide food security for our community.
  • Pupils activity

For pupils activity list visit/download Pupil's Activity for Agriculture (all activities) - Agriculture CBC Grade 6 Notes

Tuesday, 01 November 2022 09:44

Agriculture - Class 8 Social Studies Revision Notes

 

Agriculture

  • This is the growing of crops and the keeping of animals

Settlers Farming

  • Settlers are the Europeans who came and grabbed fertile land for farming

White Highlands

  • Also known as crown land
  • These are fertile areas that were grabbed from africa ns

African Native Reserves

  • These were the infertile lands
  • Africans were congested in reserves
  • They were agriculturaly less productive
  • Africans provided cheap forced labour in the settlers farm

Settlers Farming Areas

  1. Eastern highlands
    1. Nyeri
    2. Murang’a
    3. Embu
    4. Kiambu
    5. Meru
    6. Thika
    7. Nanyuki
    8. Nyandarua
    9. Laikipia
  2. Western Highlands(Rift Valley)
    1. Kericho
    2. Uasin gishu
    3. Trans nzoia
    4. Sotik
    5. Nakuru
    6. Bomet
  3. Coastal Region
    1. Taita taveta
    2. Kilifi
    3. Voi
    4. Malindi

Features/characteristics Of Settlers Farming

  • Obtained cheap labour from the africans
  • Introduced commercial farming i.e.cash crop farming
  • Introduced new crop farming
  • Practised farming in the cool and wet highlands i.e.the white highlands
  • Practised mixed farming
  • Kept beef cattle in ranches in dry areas
  • Grew sisal and cotton in dry areas.
  • Introduced plantation farming
  • Used machines and fertilizers
  • Practised crop rotation
  • Irrigation farming was done in drier areas.
  • Effects of settlers farming

Positive effects

  • Introduced cash crop/commercial crops e.g.coffee,tea,pyrthrum,etc
  • Introduced mechanised farming
  • Introduced the use of farm inputs e.g.fertilizers and chemicals.
  • Introduced exotic breed cattle
  • Introduced plantation or large scale farming
  • Led to industrialzation
  • Led to development of infrastructure i.e.roads and railways.
  • Led to urbanization e.g kitale and eldoret
  • Introduced cross breeding
  • Led to formation of cooperatives

Negative Effects

  • Africans lost thier land i.e. became squatters
  • Creation of african native reserves
  • Led to forced labour
  • Disrupted the communal land ownership i.e. land tenure system.
  • Africans were over exploited
  • Led to increased racism/racial discrimination
  • Development of the wtite highlands only
  • Introduced payment of taxes to africans

Exotic Breed Cattle

  • Jersey
  • Fresians
  • Guernsey
  • Aryshire

Exotic Beef Cattle

  • Aberdeen angus
  • Hereford
  • Chalorais

Exotic Dual Cattle

  • Sahiwal
  • Indegenous cattle
  • Zebu
  • Boran

Settlement Schemes

  • These were areas set aside by the government tothe landless.
  • Ways of acquiring the settlement schemes
  • Buying land from settlers
  • Reclamation of hostile areas i.e.
  • Spraying areas infested with tsetse flies
  • Irrigating arid and semi-arid areas
  • Draining swamps
  • Forest excision i.e clearing the forest to settle the squatters.
  • Formation of land buying companies.

Reasons For Establishment Of Settlement Schemes

  • To settle the squatters
  • To boost food production
  • To reduce population pressure
  • To ease congestion
  • To improve peoples’ living standards

Distribution Of Settlement Schemes

  • Mwea Irrigation Schemes
  • Ol Kalou Salient Schemes
  • Jomo Kenyatta At Mpeketoni Lamu
  • Bura-galolo Settlement Schemes
  • Island Farms In Central
  • Muguga jet Schemes - Central
  • Ahero - nyanza
  • Lambwe Valley - Nyanza
  • Matunda Settlement
  • Ravine/ Sabatia

Benefits Of Settlement Schemes

  • Landless people have been settled
  • Waste land have been put into use
  • Have created employment
  • Have boosted food production
  • Have united people in the country
  • Have led to development
  • Agricultural export from schemes earn foreign exchange
  • Have reduced population pressure

Problems Facing Settlement Schemes

  • Soil erosion
  • Population pressure
  • Poor means of transport
  • Lack of social amenities
  • Lack of title deeds
  • Sometimes there is ethnic hatred in the schemes
  • Lack of modern equipment
  • Sometimes farmers are unable to repay loans
  • Mismanagement of schemes

Irrigation Schemes

  • Irrigation is growing of crops using water
  • They include;
    1. Mwea irrigation schemes
    2. Perkerra irrigation schemes
    3. Ahero irrigation schemes

Mwea Irrigation Schemes

  • It is in Kirinyaga County
  • It is the oldest in the country
  • It was established in 1954
  • The main reason for establishment was to settle the landless
  • It has black cotton soil
  • This region slopes gently to support flow of water by gravity.
  • Source of water - Water comes from river Thiba and Nyamindi which are tributaries of River Tana
  • Main crop grown
    1. Rice (paddy)

Other Crops Grown

  1. Water melon
  2. Sukumawiki
  3. Maize
  4. French beans

Method Of Irrigation

  • Canal irrigation method
  • Canals direct water into the rice field called basins
  • Water flows by gravity

Perkerra irrigation scheme

  • Located in Baringo County
  • Was established in 1954
  • The main reason for establishment was to bring more land under cultivation
  • Water for irrigation comes from River Perkerra

Crops Grown

  1. Seed maize (main crop)
  2. Chillies
  3. Tomatoes
  4. Onions
  5. Watermelons
  6. Pawpaws

Method Of Irrigation

  • Uses furrow irrigation method
  • Involves construction of furrows and ridges
  • Crops grown on the ridges
  • Water directed to the furrows
  • NB; the main reason why irrigation schemes were established was to boost food production.

Contribution Of Irrigation Schemes To The Economy Of Kenya

  • Create employment
  • Source of income
  • Have led to indutrialization
  • Have improved people’s living standards
  • Have led to development of roads
  • Earn Kenya foreign exchange
  • Unproductive land have been put into use
  • Have led to urbanization
  • They are sources of livelihood

Problems Facing Irrigation Schemes

  • Pest and diseases
  • Mismanagement of irrigation schemes
  • Long distances to the market
  • Silting of canals
  • Water shortages
  • High cost of farm inputs e.g.seeds and fertilizers
  • Delayed payment
  • Lack of agricultural extension officers
  • Exhaustion of soil

Horticultural Farming

  • This is the growth of fruits, flowers, and vegetable
  • Viticulture - This is the growth of fruits only
  • Floriculture -This is the growth of vegetable only.it is also called market gardening

Features/characteristics Of Horticulture

  • Practised in areas with fertile soil
  • It is capital intensive
  • It is labour intensive
  • The farms are intensively cultivated
  • Crops are grown in green houses
  • Practised in both small and large scale
  • High quality seeds and fertilizers are used
  • Mainly done for sale
  • Regular spraying is done

Crops Grown In Horticultural Farming

  • Vegetable
  • Spinach
  • Kales
  • French beans
  • Onions
  • Baby corn
  • Cauliflower
  • Tomatoes
  • Cabbages
  • Fruits
  • Bananas
  • Mangoes
  • Apples
  • Avocadoes
  • Paws paws
  • Pineapples
  • Oranges
  • Pears
  • Flowers
  • Roses
  • Orchids
  • Carnations
  • Gladioli

Problems Facing Horticultural Farming To The Economy Of Kenya

  • Delayed payment
  • pest and diseases
  • poor means of transport and communication
  • high transport charges
  • expensive farm inputs
  • bad weather
  • lack of cooperative societies
  • long distance to the market
  • lack of capital
  • lack of refrigeration facilities

Horticultural Farming In Netherlands

  • Netherlands is in Europe
  • also known as Holland
  • it is a lowland
  • it grows flowers,fruits,and vegetable
  • done on reclaimed land called polders
  • they reclaim land using special walls called dykes
    NB they practice farming in polders because the land is scarce
  • They mostly use green/glass houses
  • This helps them to practice horticultural farming throughout the year
  • Netherlands is densely populated and this provides a ready market.

Comparison of horticultural farming in Kenya and Netherlands .

Kenya  Netherlands 
.done on natural land  Done on polders
 grows flowers fruits and vegetable  Grows flowers fruits and vegetable
 few green houses are used  Mostly green houses are used
 lack of capital for expansion  Capital is available for expansion
 little mechanization  Highly mechanised
 skilled labour is inadequate  Great ues of skilled labour is required
 poor means of transport  Well developed transport
 less scientific method used  Uses scientific method of farming
 production is low  Production is high
 farmers are indequately skilled  Farmers are andequately skilled

 

Fish Farming

  • This is the rearing of fish in ponds or tanks
  • It is also called aquaculture
  • The best soil to construct a fish pond is clay soil
  • Fish kept
    1. trout
    2. tilapia
    3. mudfish

Fish Farming In Kenya

  1. Sagana - Kirinyaga County
  2. Kabaru - Nyeri County
  3. Kibos - Kisumu County
  4. Ljipe - Taita Taveta County
  5. Aruba Dam-taita Taveta
  6. Bamburi - Mombasa County
  7. Borabu - Kisii County
  8. Homa Bay - Homa Bay

Fish Farming In Japan

  • Japan is in Asia
  • It is the leading producer of fish in the world
  • Done in the sheltered areas along the coast
  • Practised in the four islands
    • Hokkaido
    • Kyoshu
    • Honshu
    • Shikoku
  • it has large market for fish
  • fish are sold through cooperatives
  • fish farming is highly mechanized
  • highly supported by the government
  • fish have high demand
  • fish kept
    • oyster
    • prawns
    • trout eeels

Comparison Of Fish Farming In Kenya And Japan

 Kenya   Japan 
 Fish reared are trout,tilapia and mudfish  Fish reared are oyster, prawns,trout and eels
 Capital is inadequate  Adequate capital
 Few research and training centres  Many modern fisheries and research centres
 Fish kept in fish ponds  Fishing done in the sheltered sea
 Limited/small market  Large market for fish
 Low demand for fish  High demand for fish
 Cooperatives are not developed  Copperatives are well developed
 Not highly supported by the government  Highly supported by the government
 Most fish are consumed locally  Most of the fish are exported

Questions

Science And Technology

  1. Grade 6 learners at Maseno academy carried out an experiment like the one shown below,
    Sci01
    Which property of matter were they investigating?
    1. Effects of hot and cold water on patter.
    2. Expansion and contraction of solids.
    3. Expansion and contraction of gases,
    4. Expansion and contraction of liquids
  2. Use the diagram below to answer the following question,
    Sci02
    Which statement does not match with the parts represented by letters in the diagram above?
    1. P- its volume decreases during exhalation.
    2. U - cleans and warms the air.
    3. R - helps the trachea to stay open.
    4. V - flattens during inhalation.
  3. Below is a simplified diagram of the circulatory system.
    Sci03
    Which pair of blood vessels carry blood with carbondioxide?
    1. P, Q
    2. P, S
    3. R, S
    4. P,R
  4. The pie chart below shows the composition of gases that make up air.
    Sci04
    Which of the following statements is true about the composition of air represented above?
    1. The gas marked W is used during germination.
    2. Gas X can be used to put out fire.
    3. The gas labelled Y is used to preserve soft drinks.
    4. Gas Z is used by legumes to make proteins.
  5. Which of the following parts of a computer displays the document being typed?
    1. Keyboard.
    2. Monitor. 
    3. Printer.
    4. Mouse.
  6. The diagram below represents classification of plants.
    Sci06
    Which of the following plants can be used to represent L and R respectively?
    1. Mucor, bracket tree.
    2. Moss, grass.
    3. Cabbage, toadstool.
    4. Moulds, sugarcane.
  7. Which of the following statements is true?
    1. A VDU is used to process data.
    2. A mouse has a space bar.
    3. A cursor shows the end of text being worked on.
    4. The monitor is used to produce hard copies.
  8. Which of the following small animals are all invertebrates?
    1. Newt, cockroach, spider.
    2. Snail, spider, mite.
    3. Slug, crab, frog.
    4. Centipede, snake, scorpion.
  9. Which of the following effects of heat on matter are as a result of increase in temperature?
    1. Melting and expansion.
    2. Condensation and contraction.
    3. Freezing and evaporation.
    4. Evaporation and contraction.
  10. Which of the following is not a fimction of leaves?
    1. Photosynthesis.
    2. Breathing. 
    3. Transpiration.
    4. Absorption.
  11. The diagram below shows transfer of heat on matter.
    Sci11
    The type of heat transfer demonstrated  above is called
    1. convection.
    2. radiation
    3. conduction.
    4. expansion
  12. The following are signs of a certain nutritional deficiency disease:
    1. Sores at the corners of the mouth.
    2. Protruding stomach
    3. Swollen body parts.
    4. Brown hair.
      Which of the following foods can be recommended for a person suffering from the disease?
      1. Beans, tomatoes, cabbages.
      2. Rice, ugali, liver.
      3. Meat, fish, groundnuts.
      4. Chips, sugarcane, bananas.
  13. Candle wax is able to float on water because of its
    1. weight.
    2. material. 
    3. size.
    4. shape.
  14. Crops such as peas, greengrams and are called
    1. cereals.
    2. legumes.
    3. tubers.
    4. vegetables.
  15. Below is a chart showing farm animals  and their uses:
    Sci15 
    Which products are represented by W, X  and Y respectively?
    1. Milk, mutton, eggs. :
    2. Wool, mutton, eggs.
    3. Mutton, meat, mohair.
    4. Hide, eggs, meat.

Agriculture

  1. Which of the following is not a planting material for creeping crops?
    1. Seeds.
    2. Hoes.
    3. Scissors.
    4. Manure. Burning candle
  2. Which of the following is an example of creeping crops?
    1. Cactus.
    2. Carrot.
    3. Passion.
    4. Pumpkin. 
  3. Which of the following is a deterrent of wild animals against farming activities?
    1. Scarecrow.
    2. Chicken.
    3. Mongoose.
    4. Bananas.
  4. All the following are ways of conserving water in the farm except
    1. mulching. 
    2. shading.
    3. thinning.
    4. cover cropping. 
  5. Kwame came across a bare land with deep  U-shaped channels as shown below
    Sci20.
    Which type of soil erosion was this likely  to be?
    1. Splash erosion.
    2. Rill erosion. 
    3. Sheet erosion.
    4. Gulley erosion.
  6. Exposed  plant roots on a bare flat ground  is an indication of
    1. Splash erosion.
    2. sheet erosion. 
    3. gulley erosion. 
    4. rill erosion.
  7. All the  following are ways of controlling soil erosion. Which one is not?
    1. Using drip irrigation.
    2. Mulching.
    3. Planting cover crops
    4. Building gabions.
  8. Below is a small domestic animal reared in Kenya.
    Sci23
    Which of the following are the products  from the animal above? 
    1.  Meat and milk. 
    2. Manure and meat.
    3. Milk and skin.
    4. Wool and manure.
  9. Identify the animal drawn below.
    Sci24
    1. Goat.
    2. Dog
    3. Sheep.
    4. Bull.
  10. Which of the following shows a pair of tiny seeded crops?
    1. Sugarcane and banana. 
    2. Onions and tomatoes.
    3. Pumpkin and cucumber.
    4. Sunflower and carrots.

Homescience

  1. Which of the following lists consists of accessories only?
    1. Lipstick, eye pencil, deodorants.
    2. Deodorants, creams, nailpolish.
    3. Perfumes, headgears, lotion. 
    4. Scarves, necklaces, wristbands.
  2. A person between 13 and 19 years is
    1. a young man.
    2. an underage. 
    3. a small lady.
    4. an adolescent.
  3. Which of the following diseases is non- communicable?
    1. Tuberculosis.
    2. Malaria.
    3. Epilepsy.
    4. Covid-19.
  4. Which of the following is not a factor to consider when making a budget?
    1. Taste and preference.
    2. Amount of money.
    3. The type of food.
    4. The weather of the day.
  5. A sufuria is a cooking equipment that is commonly cleaned using
    1. Charcoal powder.
    2. steelwool.
    3. a sand paper.
    4. egg shells.
  6. Which of the following is a fragile kitchen  utensil?
    Sci31
  7. Which of the following foods can be stewed?
    1. Meat
    2. Cassava
    3. Yams.
    4. Cabbage.
  8. Which of the following may be needed for baking?
    1. Maize flour.
    2. Oven.
    3. Onions.
    4. Tomatoes.
  9. Which of the following is not a needle work tool?
    Sci34
  10. Which or the following lists consists of a balanced diet? 
    1. Rice, meat, chapati.
    2. Fish, orange, carrots.
    3. Ugali, eggs, kales.
    4. Chips, sausages, chicken.

Physical Health Education.

  1. 'Which one of the following is not a track event?
    1. Back stroke.
    2. Bunch start.
    3. Shoulder shrug
    4. Drop finish.
  2. Partner work can be applied in 
    1. swimming. 
    2. football.
    3. athletics.
    4. ropework.
  3. Which of the following is not a rope work technique?
    1. Wounded duck.
    2. Pivoting.
    3. Skier.
    4. Heel taps.
  4. Which of the following equipment is used in standing javelin?
    Sci39
  5. Scissor technique can be applied in
    1. high jump.
    2. soccer.
    3. kabaddi. 
    4. softball.
  6. Which of the following is the first phase in high jump?
    1. Landing.
    2. Take off
    3. The run.
    4. Flight
  7. A teacher drew a diagram like the one drawn below.
    Sci42
    What did the teacher draw?
    1. shotput sector.
    2. rounders pitch. 
    3. javelin sector.
    4. volleyball pitch.
  8. Study the picture below.
    Sci43
    The item drawn above can be used when practising
    1. football.
    2. high jump.
    3. handball. 
    4. volleyball.
  9. When practising tapping in soccer, we can  use our
    1. heads.
    2. hands.
    3. elbows .
    4. highs.
  10. How many players make up one kabaddi team?
    1. 7
    2. 11
    3. 12
    4. 6
  11. A group of learners was seen practising single hand dig pass. Which game were they preparing for?
    1. Handball.
    2. Volleyball.
    3. Football.
    4. Basketball.
  12. Study the type of pass below.
    Sci47
    The type of pass above is called
    1. bounce pass.
    2. chest pass.
    3. dig pass.
    4. instep pass.
  13. Which of the following can be used to improvise a relay baton?
    1. Broken glasses.
    2. Maize stalks.
    3. Old clothes.
    4. Thread.
  14. Smitts are worn to protect our
    1. hands
    2. eyes
    3. knees.
    4. elbows.
  15. Which of the following is not a pool activity?
    1. Crouch surface dive.
    2. Backstroke
    3. Standing surface dive.
    4. Punting.

Marking Scheme

Science aad Technology  Agriculture  Home Science  Physical Education
  1. C
  2. C
  3. A
  4. B
  5. B
  6. D
  7. C
  8. B
  9. A
  10. D

  1. C
  2. C
  3. B
  4. B
  5. A
  1. C
  2. D
  3. A
  4. C
  5. D
  6. B
  7. A
  8. B
  9. C
  10. D

 

  1. D
  2. D
  3. C
  4. D
  5. B
  6. C
  7. A
  8. B
  9. D
  10. C
  1. A
  2. D
  3. B
  4. D
  5. A
  6. C
  7. B
  8. B
  9. D
  10. A
  1. B
  2. B
  3. A
  4. A
  5. D

 

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