Deficiency of which of the following elements causes yellowing and poor growth of the plants ?

RO ARO 2023
103.

Deficiency of which of the following elements causes yellowing and poor growth of the plants ?

निम्नलिखित में से किस तत्त्व की कमी के कारण पौधे पीले हो जाते हैं तथा उनमें वृद्धि कम हो जाती है ?

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