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Question

The chemical fertilizer required for better rhizobial nitrogen fixation is ______.

A
Phosphorus
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B
Potassium
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C
Calcium
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D
Sodium
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Solution

The correct option is A Phosphorus
Nitrogen fixation is a process of conversion of atmospheric nitrogen into its compounds. The process of nitrogen fixation requires a reducing power, energy source (ATP), dinitrogenase enzyme, and compound for trapping NH3. Phosphorous increased the nitrogen-fixing capacity of legumes plants, stimulates the root production, helps in the transformation of sugar, energy transfer, etc.
Hence, the correct answer is option A, i.e., Phosphorus.

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