Waec Model Questions Vol1 2025 Agricultural Science Question 47
Practice objective / multiple choice question 47 from the 2025 Waec Model Questions Vol1 Agricultural Science examination.
A farmer plants soybeans on 2 ha. Soybeans fix 50 kg of nitrogen per hectare each season. The soil initially contains 120 kg N ha⁻¹. After harvest, 30 % of the nitrogen fixed by the soybeans is lost to leaching. What is the total amount of nitrogen remaining in the soil (in kg ha⁻¹) after the season?
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This is Waec Model Questions Vol1 2025 Agricultural Science Question 47. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Easy .
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