Question

Farmers have reported over 50% higher yields
of rice by using the biofertilizer
(a) Azolla pinnata
(b) Cyanobacteria
(c) Legume-Rhizobium symbiosis
(d) Mycorrhiza

Answer 1

Answer:

a) Azolla pinnata

Explanation:

Azolla pinnata contains Anabaena azollae in its leaf cavities, which fixes atmospheric nitrogen and helpful in increasing nitrogen content in rice. Farmers have reported over 50% higher yields by using Azolla as a biofertilizer.

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