Waec Model Questions Vol1 2020 Agricultural Science Question 5
Practice essay / theory question 5 from the 2020 Waec Model Questions Vol1 Agricultural Science examination. This question covers Crop Production .
A farmer intends to cultivate maize on a 2‑hectare field. Soil analysis shows pH 5.5, organic matter 1.2 %, available N 30 kg ha⁻¹, P 12 kg ha⁻¹ and K 40 kg ha⁻¹. The recommended fertilizer rates for optimum yield are 120 kg N, 60 kg P₂O₅ and 80 kg K₂O per hectare. To raise the soil pH to 6.5, the farmer will apply agricultural lime, which requires 2.5 tonnes per hectare for each unit increase in pH. The farmer plans to use a mixed NPK 15‑15‑15 fertilizer together with urea (46 % N) and single superphosphate (20 % P₂O₅). Prices are: lime ₦5 000 per tonne, mixed NPK ₦25 000 per tonne, urea ₦35 000 per tonne, superphosphate ₦30 000 per tonne.
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This is Waec Model Questions Vol1 2020 Agricultural Science Question 5. It is one of the essay questions from the 2020 Waec Model Questions Vol1 Agricultural Science examination.
The question covers Crop Production .
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