Biofertilizers include...

Biofertilizers include

A

Cow Dung manure and farmyard waste

B

A quick growing crop ploughed back

C

BGA/Anabaena and Azolla

D

All the above

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The correct Answer is:

C

Biofertilizers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilizers are bacteria, fungi and cyanobacteria

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