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?
$I, II$ and $III$
$I$ and $II$
$I$ and $III$
$II$ and $III$
Leghaemoglobin occurs in
Rhizosphere is the region where
Which of the following cyanobacteria can fix atmospheric nitrogen?
$I.$ Anabaena
$II.$ Oscillatoria
$III.$ Nostoc
Choose the correct option
$VAM$ represents
The organisms which are used to enrich the nutrient quality of the soil are called