Why are cyanobacteria considered useful in paddy fields ?
Why are cyanobacteria considered useful in paddy fields ?
Cyanobacteria are autotrophic microbes widely distributed in aquatic and terrestrial environments many of which can fix atmospheric nitrogen(they contain heterocyst) e.g. Anabaena, Nostoc, Oscillatoria, etc. In paddy fields, cyanobacteria serve as an important biofertiliser and increases yield by $50 \%$. Blue green algae also add organic matter to the soil and increase its fertility.
Similar Questions
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
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 of the following can use molecular nitrogen as nutrient
Which of the following can use molecular nitrogen as nutrient
Which organisms are used to increase thesoil fertility ?
Which organisms are used to increase thesoil fertility ?
The biofertilizer present in the roots of legumes is
The biofertilizer present in the roots of legumes is
Which is correct about nitrogen fixation by legumes. They fix nitrogen through
Which is correct about nitrogen fixation by legumes. They fix nitrogen through