Agriculture Questions and Answers - Form 2 Term 2 Opener Exams 2023

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AGRICULTURE 

  1.  
    1. What is soil sampling (1mark)
    2. State two soil sampling methods (2marks)
  2.  Define the following term (3 marks)
    1. chlorosis
    2. chitting
    3. plant population
  3. Give two symptoms common on crops deficient in nitrogen and potassium (2marks)
  4. Give two sources of phosphorous in the soil. (2marks)
  5. State two functions of iron in plants. (2marks)
  6. Distinguish between Fertilizer grade and Fertilizer ratio.(2marks)
  7. Give two type of labour records (2marks)
  8. Differentiate between macro-nutrient and micro-nutrient (2marks)
  9. Why is it not recommended to apply nitrogenous fertilizers at the time of planting(2marks)
  10. State five factor considered in timely planting (5marks)
  11. State five factors considered in choosing seed rate (5 marks)
  12. Explain five methods of fertilizer application (5 marks)
  13. List five importance of livestock (5marks)
  14. Name five uses of farm records (5 marks)
  15. Suppose a soil is deficient in all three primary macro-nutrient and in a field test it is found that the following should be applied: 60kg N, 30kg P,O, and 40 kg K2O per hectare. Calculate the amount of Sulphate of ammonia, Single Superphosphate and Potassium Chloride required per hectare. Given that: Sulphate of Ammonia is (20% N), Single Superphosphate is (20% PO,) and Muriate of Potash is (50% K,O)
    1. Sulphate of Ammonia (2marks)
    2. Single Superphosphate (2marks)
    3. Muriate of Potash (marks)

MARKING SCHEME

  1.  
    1. Process of taking a small quantity of soil from the field to act as a representative sample of the soil in that particular field.(1x1) 1mk
    2. Traverse method
      Zigzag method (2x1)=2mks
  2.  
    1. Yellowing of plant leaves due to loss of chlorophyll (1x1)=1mk
    2. Its placing potatoes in a dark place to enhance sprouting. (1x1)=1mk
    3. Ideal number of plants that can be comfortably accommodated in any given area without overcrowding or too few to waste space (1x1)=1mk
  3.  
    • Leaf chlorosis
    • Premature leaf fall
    • Stunted growth (2x1)=2mk
  4.  
    • Organic manure
    • Commercial fertilizer
    • Phosphate rocks
  5.  
    • involved in the synthesis of chlorophyll,
    • it is essential for the maintenance of chloroplast structure and function. 
  6.  
    • Fertilizer grade - indicate amount of each nutrient contain in a fertilizer
    • Fertilizer ratio - relative proportion of three primary macro nutrient N.P.K (2x1)=2mk
  7.  
    • Master roll
    • Labour utilization analysis (2x1)=2mk
  8.  
    • Macro nutrient- nutrient required by plant in large amount -
    • Micro nutrient-nutrient needed by plant in relative small quantity (2x1)=2mk
  9.  
    • Are highly soluble in water
    • They are easily leached to lower horizons (2x1)=2 mks
  10.  
    • Soil type
    • Market demand
    • Prevalence of pest and disease
    • Weed control
    • Type of crop to be planted
    • The rainfall pattern/moisture condition of the soil. (5x1) 4mks
  11.  
    • Seed purity- seed with a high germination percentage
    • Germination percentage
    • Spacing- at close space more seeds are used than a wide spacing
    • Number of seeds per hole.
    • The Purpose of growth   (5x1)=5mks
  12.  
    • Placement method- application of fertilizer in planting holes and/drills
    • Side dressing- placement of nitrogenous fertilizer at the crop being top dressed
    • Foliar spraying- application of specifically formulated fertilizer solution onto the foliage of the crop
    • Drip-dissolving of fertilizer and applying to individual plant through perforated pipes or bottles
    • Broadcasting -random scattering of fertilizer on the ground for plant use (5x1)=5mks
  13.  
    • Source of food
    • Source of income
    • Cultural use
    • Animal power
    • Provision of raw materials (5x1)=5mks
  14.  
    • Show the history of the farm
    • Show whether the farm is making a profit or loss.
    • Show all the assets and liabilities of the farm which can be used to value the farm.
    • Help in supporting insurance claims on death, theft, fire or loss of farm assets.
    • Help in tax assessment to avoid over taxation.
    • Used as a guide in planning and budgeting.
    • Helps to detect losses or theft in the farm.
    • Make it easy to share profits or losses in partnerships.
    • Help in settling disputes among heirs to cstate if the farmer dies without a will.
    • Provide labour information on terminal benefits for a worker. (5x1)=5mks
  15.  
    1. Sulphate of Ammonia (SA) is
      60kg N x100kg SA/20 kg N  
      =300 kg SA
    2. Total amount of SSP
      30kg P2O3 x 100kg SSP/20kg P2Os 
      =150 kg SSP
    3. Total amount of K2O
      40kgK20 x 100kg KCL/50kg K,O
      =80 kg KCL
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