Biofertilizers include [CBSE PMT 1997, 2001] – McqOptions

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1.	Biofertilizers include [CBSE PMT 1997, 2001]
A.	Cowdung manure and farmyard waste
B.	A quick growing crop ploughed back
C.	BGA/Anabaena and Azolla
D.	All the above
Answer» D. All the above

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