Biofertilisers are
A. some bacteria and cyanobacteria
B. fertilisers formed by ploughing in barseem
C. fertilisers obtained by decay of dead organisms
D. fertilisers prepared by mixing cattle dung with crop residues
Answer:A
Biofertilisers are
A. some bacteria and cyanobacteria B. fertilisers formed by ploughing in barseem C. fertilisers obtained by decay of dead organisms D. fertilisers prepared by mixing cattle dung with crop residues