धान में खैरा बीमारी का कार� – McqOptions

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1.	धान में खैरा बीमारी का कारण है -
A.	जस्ते की कमी
B.	फफूँद का प्रकोप
C.	क्षारीयता
D.	मैग्नीशियम की कमी
Answer» B. फफूँद का प्रकोप

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