Gce Model Questions Vol1 2018 Agricultural Science Question 36
Practice objective / multiple choice question 36 from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
A farmer practices a two‑year rotation where soybeans are grown first, followed by maize. The soybean crop yields (2.5\ \text{t\ ha}^{-1}\) and fixes (80\ \text{kg\ N}\) per tonne of beans produced. Of the fixed nitrogen, (60\%\) is mineralised and becomes available to the subsequent crop, but (30\%\) of this mineralised nitrogen is lost by leaching before the maize is planted. Maize requires (150\ \text{kg\ N\ ha}^{-1}\) for optimum yield. Assuming no other nitrogen sources, how many kilograms of nitrogen fertilizer must the farmer apply per hectare for the maize crop?
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About This Question
This is Gce Model Questions Vol1 2018 Agricultural Science Question 36. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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