Neco Model Questions Vol1 2022 Agricultural Science Question 31
Practice objective / multiple choice question 31 from the 2022 Neco Model Questions Vol1 Agricultural Science examination.
A three‑year crop rotation is practiced: Year 1 maize removes 70 kg N ha⁻¹, Year 2 soybean fixes 50 kg N ha⁻¹, Year 3 wheat removes 60 kg N ha⁻¹. If the soil nitrogen balance is zero at the start of Year 1, what is the net change in soil nitrogen after one complete rotation?
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This is Neco Model Questions Vol1 2022 Agricultural Science Question 31. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Easy .
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