Neco Model Questions Vol1 2018 Agricultural Science Question 30
Practice objective / multiple choice question 30 from the 2018 Neco Model Questions Vol1 Agricultural Science examination.
A farmer rotates maize with cowpea. The cowpea crop yields 2.5 t ha⁻¹ and fixes 50 kg N per ton of biomass. Only 60 % of the fixed nitrogen becomes available to the subsequent maize crop. The soil already contains 30 kg N ha⁻¹. Maize requires 150 kg N ha⁻¹. Urea contains 46 % nitrogen by weight. Determine the amount of urea (kg ha⁻¹) the farmer must apply to meet the nitrogen requirement of the maize crop.
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About This Question
This is Neco Model Questions Vol1 2018 Agricultural Science Question 30. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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