Question

Phosphorus availability to plants is the maximum in the pH range of:

A 6.0 to 6.5 Correct Answer Incorrect Answer
B 6.5 to 7.0 Correct Answer Incorrect Answer
C 7.0 to 7.5 Correct Answer Incorrect Answer
D 7.5 to 8.0 Correct Answer Incorrect Answer

Solution

Soils with inherent pH values between 6 and 6.5 are ideal for P-availability, while pH values below 5.5 and between 7.5 and 8.5 limits P-availability to plants due to fixation by aluminum, iron, or calcium

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