Which disease is caused in children due to excessive use of nitrate fertilizers
Septicemia
Jaundice
Methaemoglobinaemia
Mumps
Which one of the following is not used in organic farming?
Which one is a biofertilizer
Some blue green algae can be used as biofertilizer as they are
An organism used as a biofertilizer for raising soyabean crop is
A nitrogenfixing microbe associated withAzolla in rice fields is