Green manure plants belong to

An organism used as a biofertilizer for raising soyabean crop is

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

An example of endomycorrhiza is

Mycorrhiza represents