धान का खैरा रोग किस तत्व की – McqOptions

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1.	धान का खैरा रोग किस तत्व की कमी से होता है -
A.	नाइट्रोजन
B.	लोहा
C.	जिंक
D.	पोटाश
Answer» D. पोटाश

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