Why are blue green algae not popular as biofertilisers ?
Why are blue green algae not popular as biofertilisers ?
Blue green algae are not popular as biofertilisers because they causes algal bloom in polluted water bodies. Those Blue green algae which contains hetrocyst is capable of $\mathrm{N}_{2}$ fixation.
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$I.$ Yeast
$II.$ Rhizobium
$III.$ Mycorrhiza
$IV.$ Oscillatoria
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