Which of the following is not a symbiotic nitrogen fixing bacterium?
Clostridium
Rhizobium leguminosarum
Frankia
Mycobacterium
Which one is a biofertilizer
Which one of the following is not a biofertilizer?
Which is correct
Some blue green algae can be used as biofertilizer as they are
Organic forming is the technique of raising crops through use of