Neco 2018 Geography Question 4
Practice objective / multiple choice question 4 from the 2018 Neco Geography examination.
A soil test shows pH 5.2, organic matter 2.5 % and a cation‑exchange capacity (CEC) of 12 cmolc kg⁻¹. At this pH, phosphorus availability is 70 % of the optimum, while potassium availability is 85 % of the optimum. The farmer plans to apply lime, which will raise the pH to 6.5, increase the CEC by 20 % and raise phosphorus availability by 15 % of its current value; potassium availability will remain unchanged. After liming, which nutrient (phosphorus or potassium) will be the most limiting relative to its optimum level?
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About This Question
This is Neco 2018 Geography Question 4. It is one of the objective questions from the 2018 Neco Geography examination.
Difficulty level: Medium .
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