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Question
Give a short account of biofertilizers.
Solution
Organisms that increase the nutrient content of the soil are called as bio-fertilisers. They are nitrogen-fixing microorganisms used for specific crop plants such as pulses, legumes, oil seeds, and rice. They can play a supplementary role in supplying nitrogen to specific crops under specific soil conditions. They do not pollute and can be renewed.
Example: Rhizobium is a bio-fertiliser used by farmers who grow pulses, legumes, etc.
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