Agriculture Questions and Answers - Form 2 End Term 1 Exams 2021

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INSTRUCTIONS TO CANDIDATES:

  • Answer ALL the questions
  • Answers should be written in the spaces provided
  1.  
    1. Give the meaning of the following terms.
      1. Plantation farming (1mk)
      2. Large scale farming (1mk)
    2. Give two reason why ranching is important in the arid and semi- arid areas of Kenya. (2mk)
  2. Name two processes through which carbon is returned to the atmosphere in the carbon cycle (2mk)
  3. Name two methods of layering. (2mk)
  4. A farmer is to apply a compound fertilizer 20-30-0 on a vegetable plot measuring 5m long by 4m wide at the rate of 200kg/ha. Calculate the amount of fertilizer the farmer requires for the plot (show your working). (3 marks)
  5. State four advantages of drip irrigation. (4 marks)
  6. Study the diagram below then answer the questions that follow:
    F2Et1AgriQ6
    1. Identify the method of drainage above. (1mk)
    2. State other three methods used to drain swampy areas. (3mks)
    3. Give four importance of drainage. (4mks)
  7. State the correct use of each of the following tools. (2mks)
    1. Tin snip ……………………………………………………………………………............………………
    2. Cold chisel …………………………………………………….......………………………………………
  8. Give two ways in which agriculture offer employment. (2 marks)
  9. Distinguish between minimum tillage and sub-soiling as used in agricultural production (2mks)
  10. Name three types of farm records that a sheep farmer should keep (3mks)
  11. Name two vegetative materials used in propagation of pineapples (3mks)
  12. Give three disadvantages of mulching in crop production (3 mks)
  13. State four factors that influence spacing in crops. (4 marks)
  14. State two positive effects of high temperatures on crop production. (2mark)
  15. Give four ways of water harvesting in a farm. (4 marks)
  16. Identify the tools and equipment drawn below.
    F2ET1agriQ16
    1. Identify tools/equipment J, K and L (3 mks)
    2. State the use of J and K (2mks)
    3. Give one functional similarity between K and L. (1mk)
    4. Give two maintenance practices that should be carried out in too J. (2mks)
  17. Explain six management practices that can be carried out by a farmer to maintain soil fertility on his farm. (12 marks)


MARKING SCHEME

  1.  
    1.  
      1. Plantation farming – i.e the growing of only one type of crop on large scale.(1x1=1mk)
      2. Large scale farming is the growing of crops and rearing of animals in large numbers for commercial purposes. (1x1=1mk)
    2.  
      • Arid and semi arid areas do not support crops, rather suitable for natural grasses and legume plants.
      • Ranching requires large or wide grazing land which is available in marginal areas.(Any 1 x 1 = 1
  2.  
    • Respiration
    • Combustion
    • Decomposition.  (Any 2x1=2mks)
  3.  
    • Marcotting / Aerial layering
    • Tip layering
    • Trench layering
    • Compound / serpentine layering
  4. 1ha =10,000m²
    10,000m² = 200kg
    (5 × 4)m² = ?
    20m² × 200kg
       10,000m²
    = 0.4kg (3 x 1 = 3 marks)
  5.  
    • It is economical/requires little amount of water.
    • Discourages the spread of fungal diseases.
    • There is less growth of weeds between the rows.
    • Water under low pressure may be used.
  6.  
    1. identify the method of drainage.
      • French ditch (lmk)
    2. Other methods of drainage:
      • cambered beds.
      • Open ditches
      • planting of trees.
      • Use of underground drain pipes.
      • Pumping (3x1=3mks)
    3. Importance of drainage
      • increase soil temperature
      • Increase availability and activities of soil micro-organisms.
      • Reduce soil erosion
      • Reduce leaching of nutrients.
      • Maintains soil structure. (4x 1 =4mks)
  7.  
    1. Tin snips cutting metal sheets 1mk
    2. Cold chisel cutting and shaping metal 1 mk
  8.  
    • Laborous in the farm
    • marketers of agricultural goods
  9. Minimum tillage is the application of a combination of farming practices aimed at least soil disturbance while sub-soiling is the process of cultivating the soil for the purpose of breaking up hard pans formed due to continuous use of heavy machinery in land preparation.
    1 x 2 = 2 marks
  10.  
    • Inventory records
    • Breeding records
    • Feeding records
    • Health records
    • Marketing records
    • Labour records
  11.  
    • Slip
    • Sucker
  12.  
    • Breeding ground / hiding place for crop pests
    • Traps light shows hence cannot reach the soil
    • Fire risk
    • Expensive to acquire / transport / apply
  13. Factors influencing spacing in crops.
    1. Height – Shorter crops require narrow spacing than other crops.
    2. Suckering/tillering plans that tiller or produce suckers will tend to occupy a bigger area than those which do not tiller.
    3. Soil fertility – If the soil is infertile crops may be spaced wider.
    4. Purpose of the crop. Crops can require different spacing depending on the purpose of the crop i.e. fodder require closer spacing while those for human consumption require wider spacing.
  14.  
    • Increase rate of growth or hasten the maturity of a crop.
    • Improve the quality of crops such as pineapples and oranges. (2 marks)
  15.  
    • Weirs.
    • Dams.
    • Ponds.
    • Roof catchments.
    • Wells
  16.  
    1.  
      • J – soil fumigant injector
      • K – cross pein hammer
      • L – claw hammer 3 mks
    2.  
      • J – inject fumigants into the soil
      • K – striking nails/panel pins 2mks
    3. Both have a striking face used to strike nails/pins. 1mk
    4.  
      • Remove broken or worn out parts and replace them.
      • Oil/grease movable parts.
      • Wash chemical from the tank after use.
      • Remove sticky soil that attach to the equipment after work.
      • Store in a clean dry place. 2mks
  17.  
    1. Control of soil erosion to enhance soil infiltration onto the soil and reduce surface runoff.
    2. Weed control to prevent competition for nutrients, water, space and light with crops. It also reduces pests and diseases.
    3. Carrying out crop rotation. This helps to control accumulation of crop pests and diseases on the farm. It also helps to ensure maximum utilization of nutrients.
    4. Use of inorganic fertilizers helps to add nutrients to the soil.
    5. Use of inorganic manure helps to supply organic matter to the soil.
    6. Minimum tillage which helps to maintain soil structure and prevent soil erosion.
    7. Mixed cropping of leguminous and non-leguminous crops fix nutrients and improve fertility.
    8. Proper drainage by breaking hard pans or creation of water channels, this ensures proper aeration.
    9. Control of PH to almost neutral to ensure proper functioning of micro-organisms which help in decomposition of organic matter. (5 x 2 = 10 marks)
      (1 mark for stating, 1 mark for explaining)

 

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