$VAM $ is important for
Breaking of dormancy
Phosphate nutrition
Water uptake
Retarding flowering
How do biofertilisers enrich the fertility of the soil?
Some blue green algae can be used as biofertilizer as they are
Match the columns :
Column - $I$ | Column - $II$ |
$(a)$ Mycrrohiza | $(1)$ Rhizobium |
$(b)$ Bt | $(2)$ Nucleopolyhydro virus |
$(c)$ Root nodules | $(3)$ Phosphorus |
$(d)$ Baculo virus | $(4)$ Bt -Cotton |
Which is correct about nitrogen fixation by legumes. They fix nitrogen through
Give scientific reasons : The pressure on use of organic farming and biotic fertiliser has been increased.