Which one is green manure/biofertilizer
Sesbania
Maize
Rice
Oat
(a)It is ploughed back young leguminous crop like Sesbania aculeata, S. rostrata, Crotalaria juncea etc.
Rotenone is a
The earliest pesticide was
Kattha' is obtained from the heart wood of
Drinking of mineral water with very low level of pesticides (about $0.02 ppm$) for long periods may
The fermented food of soyabean is
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