Organic forming does not include
Green manures
Chemical fertilizer
Crop rotation
Compost and farmyard manures
It’s obvious.
Mycorrhiza is a symbiotic association between
In paddy fields, _______ serves as an important biofertiliser
Give scientific reasons : The pressure on use of organic farming and biotic fertiliser has been increased.
An example of endomycorrhiza is
Which disease is caused in children due to excessive use of nitrate fertilizers
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