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    Question

    Which soil pH range is considered optimal for the

    availability of phosphorus for plant growth?
    A 4.5 - 5.5 Correct Answer Incorrect Answer
    B 6.5 - 7.5 Correct Answer Incorrect Answer
    C 8.0 - 9.0 Correct Answer Incorrect Answer
    D 10.0 - 11.0 Correct Answer Incorrect Answer
    E 5.5 - 6.5 Correct Answer Incorrect Answer

    Solution

    A soil pH of 6.5 тАУ 7.5 is considered optimal for phosphorus availability. In this pH range, phosphorus is less likely to form insoluble compounds with iron and aluminum in acidic soils or with calcium in alkaline soils, making it more accessible for plant uptake.

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