Agriculture Questions and Answers - Form 2 End Term 1 Exams 2022

QUESTIONS

Instructions:
Answer all the questions in the spaces provided

State four biotic factors that influence Agriculture. (4mks)
The diagram below illustrates a method used to prepare compost manure. Study it carefully and use it to answer the questions that follow.
1. Name the method used to prepare this type of compost. (1mk)
2. Label the parts X and Z in the diagram. (2mks)
3. By use of arrows show how each material in pits X would be moved to pit Y to pit Z. (2mks)
Give three practices that may help in achieving minimum tillage. (3mks)
List four characteristics which enables goats to live successfully in marginal areas.(4mks)
Name two products obtained from a camel. (2mks)
List three maintenance practices done on saws. (3mks)
State four reasons why farmers should keep farm records. (4mks)
1. Differentiate between macro and micro- nutrients. (2mks)
2. Give three examples of macro-nutrients used by plants. (3mks)
Name three examples of phosphatic fertilizers used by farmers in crop production. (3mks)
Give two method of fertilizer application. (2mks)
A farmer was advised to apply 150kg of C.A.N/ha while top dressing the maize crop. C.A.N contains 21% N. calculate the amount of Nitrogen applied per ha. (3mks)
The diagrams below represent soil sampling methods study them and use them to answer the questions that follow.
1. Name sampling method P and Q. (2mks)
2. Give three areas to avoid during sampling. (3mks)
State three methods used to determine soil pH. (3mks)
List four advantages of using seeds as planting materials. (4mks)
Give parts used in the propagation of the following crops. (5mks)
1. Sweet potatoes
2. Bananas
3. Sisal
4. Tea
5. Irish potatoes
Below is a diagram of a nursery for raising tomato seedlings. Use it to answer the questions that follow.
1. Give two advantages of part labeled A on the diagram above. (2mks)
2. State any three management practices that should be carried out on the nursery from the time seedlings emerge to the stage of transplanting. (3mks)
1. Outline four importance of raising seedlings in a nursery bed. (4mks)
2. State four factors that should be considered when selecting a nursery site. (4mks)
3. Name two types of layering used in vegetative propagation. (2mks)

MARKING SCHEME

State four biotic factors that influence Agriculture. (4mks)
- Pests
- Pathogens
- Pollinators
- Nitrogen fixing bacteria
- Decomposers
The diagram below illustrates a method used to prepare compost manure. Study it carefully and use it to answer the questions that follow.
1. Name the method used to prepare this type of compost. (1mk)
  - Four heap system
2. Label the parts X and Z in the diagram. (2mks))
3. By use of arrows show how each material in pits X would be moved to pit Y to pit Z. (2mks)
  - Mark as a whole
Give three practices that may help in achieving minimum tillage. (3mks)
- Application of herbicides
- Application of mulch
- Cover cropping
- Uprooting, slashing and grazing to control weeds
- Timing cultivation
List four characteristics which enables goats to live successfully in marginal areas.(4mks)
- They are brouser on a wide range of vegetation
- They require little water to maintain their metabolic processes.
- They withstand extreme tropical condition
- Tolerant to tsetsefly infestation.
- They eat many kinds of edible materials.
Name two products obtained from a camel. (2mks)
- Meat
- Milk
List three maintenance practices done on saws. (3mks)
- Sharpening of teeth
- Teeth setting
- Cleaning after use
- Replacement of broken handles
- Proper storage
State four reasons why farmers should keep farm records. (4mks)
- To provide history of the farm
- Used in planning and budget
- To determine insuarance matter
- To find information to be used for comparative purpose
- To detect losses or theft
- To determine store/profit distribution.
- Used for loaning from financial institution.
- Used in income tax department to calculate taxes.
- Keeps in settling disputed among heirs
1. Differentiate between macro and micro- nutrients. (2mks)
  - Macro-nutrients are nutrients which are required by plants in large quantities while micro-nutrients are required by plants in small quantities.
2. Give three examples of macro-nutrients used by plants. (3mks)
  - Carbon, hydrogen, oxygen, phosphorous, potassium, sulphur, calcium, magnesium.
Name three examples of phosphatic fertilizers used by farmers in crop production. (3mks)
- Single super phosphate
- Double super phosphate
- Triple super phosphate
Give two method of fertilizer application. (2mks)
- Broadcasting
- Placement
- Side dressing
- Foliar spraying
- Drip
A farmer was advised to apply 150kg of C.A.N/ha while top dressing the maize crop. C.A.N contains 21% N. calculate the amount of Nitrogen applied per ha. (3mks)
- 100kg of C.A.N contain 21kg
- 150Kg C.A.N = 21kg x 150kg C.A.N = 31.5KgN/ha
  100kgC.A.N
The diagrams below represent soil sampling methods study them and use them to answer the questions that follow.
1. Name sampling method P and Q. (2mks)
  - P – Diagonal/ Traverse
  - Q - Zigzag
2. Give three areas to avoid during sampling. (3mks)
  - Dead furrows
  - Terrace stands
  - Old fence lines
  - Old manure heaps
  - Swampy areas
  - Near tree and boundaries
  - Between slopes
  - Bottom land
  - Ant hills
State three methods used to determine soil pH. (3mks)
- B.D.H universal indicator
- Universal indicator papers
- Printed colour standards
- Commercial soil testing kit.
List four advantages of using seeds as planting materials. (4mks)
- Easy to treat against soil borne pests and diseases.
- Not bulky hence easy to store
- Easy to handle making operations faster
- Easy to use machines during planting
- Possible to apply fertilizer and seeds during planting
- Can be mechanized
- Possible to develop new crop variaties due to cross pollination
Give parts used in the propagation of the following crops. (5mks)
1. Sweet potatoes
  - Vines
2. Bananas
  - Suckers
3. Sisal
  - Bulbils
4. Tea
  - Cutting
5. Irish potatoes
  - Stem tubers
Below is a diagram of a nursery for raising tomato seedlings. Use it to answer the questions that follow.
1. Give two advantages of part labeled A on the diagram above. (2mks)
  - Reduces the impact of rain drops hence reducing splash erosion.
  - Reduces scorching effect of the overhead sun.
2. State any three management practices that should be carried out on the nursery from the time seedlings emerge to the stage of transplanting. (3mks)
  - Proper watering
  - Weed control
  - Pest and disease control
  - Hardening off
  - Thinning/pricking out.
1. Outline four importance of raising seedlings in a nursery bed. (4mks)
  - Facilities production of many seedlings in a small area.
  - Easy to carry out routine management practices
  - Makes it possible to provide best conditions for growth
  - Facilitates planting of small seeds which develop into strong seedlings that are easily transplanted.
  - Ensures transplanting of only healthy and vigorously growing seedlings.
  - Reduces the time for establishment in the field leading to faster marketing.
  - Excess seedlings can be sold to earn income.
2. State four factors that should be considered when selecting a nursery site. (4mks)
  - Nearness to water source
  - Type of soil
  - Topography
  - Previous cropping
  - Security
  - Well sheltered place.
3. Name two types of layering used in vegetative propagation. (2mks)
  - Marcotting aerial
  - Tip
  - Trench
  - Compound/serpentine