Azolla enriches rice fields with nitrogen due to its association with
Anabaena
Nostoc
Rhizobium
Frankia
It’s obvious.
Biofertilisers include
Consider the following statements about organic farming
$I.$ Organic farming promotes the use of crop rotations and cover crops and encourages balanced host/predator relationships
$II.$ Integrated pest and weed management and soil conservation systems are valuable tools on an organic farm
$III.$ Organic farming protects the environment, minimize soil degradation and erosion and decrease pollution
Which of the statements given above are correct?
$VAM $ is important for
Organic forming is the technique of raising crops through use of
Rhizosphere is the region where
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