Organic forming does not include
Green manures
Chemical fertilizer
Crop rotation
Compost and farmyard manures
Leghaemoglobin occurs in
Which of the following is not a symbiotic nitrogen fixing bacterium?
Which of the following is non-symbiotic biofertilizer
The symbiotic association of fungi with plants is known as ____which is formed by many members of the fungal genus_____.
Which disease is caused in children due to excessive use of nitrate fertilizers