AGRICULTURE
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- What is soil sampling (1mark)
- State two soil sampling methods (2marks)
- Define the following term (3 marks)
- chlorosis
- chitting
- plant population
- Give two symptoms common on crops deficient in nitrogen and potassium (2marks)
- Give two sources of phosphorous in the soil. (2marks)
- State two functions of iron in plants. (2marks)
- Distinguish between Fertilizer grade and Fertilizer ratio.(2marks)
- Give two type of labour records (2marks)
- Differentiate between macro-nutrient and micro-nutrient (2marks)
- Why is it not recommended to apply nitrogenous fertilizers at the time of planting(2marks)
- State five factor considered in timely planting (5marks)
- State five factors considered in choosing seed rate (5 marks)
- Explain five methods of fertilizer application (5 marks)
- List five importance of livestock (5marks)
- Name five uses of farm records (5 marks)
- 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)
- Sulphate of Ammonia (2marks)
- Single Superphosphate (2marks)
- Muriate of Potash (marks)
MARKING SCHEME
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- 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
- Traverse method
Zigzag method (2x1)=2mks
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- Yellowing of plant leaves due to loss of chlorophyll (1x1)=1mk
- Its placing potatoes in a dark place to enhance sprouting. (1x1)=1mk
- Ideal number of plants that can be comfortably accommodated in any given area without overcrowding or too few to waste space (1x1)=1mk
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- Leaf chlorosis
- Premature leaf fall
- Stunted growth (2x1)=2mk
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- Organic manure
- Commercial fertilizer
- Phosphate rocks
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- involved in the synthesis of chlorophyll,
- it is essential for the maintenance of chloroplast structure and function.
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- 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
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- Master roll
- Labour utilization analysis (2x1)=2mk
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- Macro nutrient- nutrient required by plant in large amount -
- Micro nutrient-nutrient needed by plant in relative small quantity (2x1)=2mk
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- Are highly soluble in water
- They are easily leached to lower horizons (2x1)=2 mks
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- 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
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- 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
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- 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
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- Source of food
- Source of income
- Cultural use
- Animal power
- Provision of raw materials (5x1)=5mks
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- 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
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- Sulphate of Ammonia (SA) is
60kg N x100kg SA/20 kg N
=300 kg SA - Total amount of SSP
30kg P2O3 x 100kg SSP/20kg P2Os
=150 kg SSP - Total amount of K2O
40kgK20 x 100kg KCL/50kg K,O
=80 kg KCL
- Sulphate of Ammonia (SA) is
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