Tamilnadu BoardEnglish MediumSTD 12BIO BOTANYPlant Breeding.3 Marks
Question
How does Rhizobium act as an efficient bio-fertilizer?
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Answer
Bio-fertilizers containing rhizome bacteria are called rhizome bio-fertilizer culture. Symbiotic bacteria that reside inside the root nodules convert the atmospheric nitrogen into a bio-available form to the plants. This nitrogen-fixing bacterium when applied to the soil undergoes multiplication in billions and fixes the atmospheric nitrogen in the soil. Rhizobium is best suited for the paddy fields which increase the yield by 15 – 40%.
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