Which one of the following is considered to be the best nitrogen fixers for biofertilizers?
A. Anabena.
B. Azomonas.
C. Rhizobium.
D. Azospirillum.
Answer:A
Which one of the following is considered to be the best nitrogen fixers for biofertilizers?
A. Anabena. B. Azomonas. C. Rhizobium. D. Azospirillum.