Which of the following is used as a biofertilizer for soybean crop?
A. Nostoc
B. Azospirillum
C. Rhizobium
D. Azotobacter
Answer:C
Which of the following is used as a biofertilizer for soybean crop?
A. Nostoc B. Azospirillum C. Rhizobium D. Azotobacter