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A simple technique has been developed in India by using follow | NABARD GRADE A / B EXAM

A simple technique has been developed in India by using following organism as biofertilizer (IBPS AFO-2012)
Anonymous Quiz
7%
Azotobacter and nostoc
15%
Azolla and rhizobium
30%
Azolla and azatobacter
48%
Azotobacter and rhizobium
0%
None of the above