Which one of the following can be used as biofertiliser in cotton field ?
A. Azolla-Anabaena
B. Streptococcus
C. Azospirillum
D. Azotobacter chroococcum
Answer:D
Which one of the following can be used as biofertiliser in cotton field ?
A. Azolla-Anabaena B. Streptococcus C. Azospirillum D. Azotobacter chroococcum