Question

Define biofertilizers. Describe any four sources of biofertilizers. ​

Answer 1

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Biofertilizers are organisms that enrich the nutrient quality of soil. The main sources of biofertilizers are bacteria, fungi, and cynobacteria (blue-green algae). These are known to deliver a number of benefits including plant nutrition, disease resistance, and tolerance to adverse soil and climatic conditions.

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Answer 2

Biofertilizers :- They represent nutrient input for plant growth which is of biological origin.

Sources - Bacteria, Fungi and Cynobacteria