3523. The maximum soil fertility occurs in the pH range of

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A. 5.0 to 6.2
B. 6.0 to 7.2
C. 7.0 to 8.2
D. 4.0 to 5.2
✅ The correct answer is option B.
In general, optimum availability occurs between a soil pH of 6.0 and 7.0.

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