Organic farming includes
$I.$ use of biofertilisers and biopesticides
$II.$ crop rotation
$III.$ locally developed pest resistant varieties
Choose the correct option
$I$ and $II$
$I$ and $III$
$II$ and $III$
$I, II$ and $III$
Which one of the following is not used in organic farming?
Which one is a biofertilizer
Give scientific reasons : The pressure on use of organic farming and biotic fertiliser has been increased.
Which of the following is non-symbiotic biofertilizer
Nitrogen fixation is