Comprehensive Resources for Agriculture: Topical Questions, Past Papers, and Answers
Atika School
List four elements whose deficiency results into chlorosis in plantsList four elements whose deficiency results into chlorosis in plants
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State four advantages of applying lime in clay soil State four advantages of applying lime in clay soil
State four advantages of liming as a measure of soil improvementState four advantages of liming as a measure of soil improvement
A compound fertilizer bag has the labels 20-20-0. What do the figures stand for?A compound fertilizer bag has the labels 20-20-0. What do the figures stand for?
A farmer was advised to apply compound fertilizer 20-20-10 on an orchard measuring 20m X 10m at the rate of 80kg/ha. Calculate the amount of fertilizer the farmer would require for the orchard.
A farmer had a plot of land measuring 5 hectares in which he intended to plant maize. He was advised to apply 150 kg of P205 per hectare at planting and 200kg N per hectare during top dressing. The fertilizer available in the market was Calcium Ammonium Nitrate containing 20% N and Di-ammonium phosphate 50% P205. Calculate.A farmer had a plot of land measuring 5 hectares in which he intended to plant maize. He was advised to apply 150 kg of P205 per hectare at planting and 200kg N per hectare during top dressing. The fertilizer available in the market was Calcium Ammonium Nitrate containing 20% N and Di-ammonium phosphate 50% P205. Calculate. (i) The amount of Diammonium phosphate require (ii) The amount of calcium ammonium nitrate required in 50 Kg bags
State four ways by which nutrient phosphorous is lost from the soil.State four ways by which nutrient phosphorous is lost from the soil.
State two roles of calcium in the soilState two roles of calcium in the soil
State two roles of calcium in crop productionState two roles of calcium in crop production
State the deficiency symptoms of calcium in crops.State the deficiency symptoms of calcium in crops.
State one role and one deficiency symptom of magnesium on crops.State one role and one deficiency symptom of magnesium on crops.
(i) Role
Study the graphs below, showing relationship between soil pH and nutrient availability.Study the graphs below, showing relationship between soil pH and nutrient availability. a) Explain the two graphs X and Y.
State two roles of potassium in crop productionState two roles of potassium in crop production
State the symptoms of potassium deficiency in crops.State the symptoms of potassium deficiency in crops.
State a reason why a crop may continue showing potassium deficiency despite application of recommended amount of potassic fertilizerState a reason why a crop may continue showing potassium deficiency despite application of recommended amount of potassic fertilizer
State two roles of phosphorus in crop productionState two roles of phosphorus in crop production
State the symptoms of phosphorus deficiency in crops.State the symptoms of phosphorus deficiency in crops.
Give one reason why phosphatic fertilizers benefit subsequent crop in Second and third year after application.Give one reason why phosphatic fertilizers benefit subsequent crop in Second and third year after application.
State two symptoms of Sulphur deficiency in plantsState two symptoms of Sulphur deficiency in plants
Give four functions of Sulphur in cropsGive four functions of Sulphur in crops
A compound of fertilizer has a fertilizer grade of 25:10:5.calculate the a mount of phosphorus contained in 400kg of this fertilizerA form four student was given a sample of a fertilizer with the following characteristics:27/8/2023 A form four student was given a sample of a fertilizer with the following characteristics:A form four student was given a sample of a fertilizer with the following characteristics:
(a) Identify the fertilizer
Mr. Arogo of Mosocho village prepared to top dress 10 hectares of Napier grass using Sulphate of ammonia (21%N). Sulphate of ammonia is applied at rate of 150kg per hectare. Calculate b) The number of 50kg bags of fertilizer he will purchaseCalculate the amount of P2O5 in 300kg of a compound fertilizer 25:10:5 State four importance of top dressing forage cropsState four importance of top dressing forage crops
State two factors that determine the amount of fertilizer to be used as a top dress in forage crops.27/8/2023 State two factors that determine the amount of fertilizer to be used as a top dress in forage crops.State two factors that determine the amount of fertilizer to be used as a top dress in forage crops.
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