Soil Fertility

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Soil Fertility

Soil Fertility -Microbes are being exploited in two important ways - biofertilisers, and creating new nitrogen-fixing organisms.

1. Biofertilisers. Potential of Rhizobium, Azotobacter, Beijerinckia, Azospirillum, Cyanobacteria, such as species of Aulosira, Anabaena, Nostoc, Plectonema, Scytonema, Tolypothrix, and Azalia as biofertilisers has been exploited so as these could serve an alternative to chemical fertilisers.

Many brands of rhizobial inoculants are already in market today in the country. Several organisation and manufacturers are producing huge quantities of Rhizobium culture in the country.

These include Micro Bac., India, Shyam nagar, Parganas; Bacifil Inoculants, Lucknow; Govt. of TamilNadu; Nitro Fix Industries, Calcutta (W. Bengal) and Indian Organic Chemical Ltd. Bombay. In some other States, units are being prepared for increase in its production. Much progress has also been made with cyanobacteria in this direction.

Mycorrhizae, both ecto and endomycorrhiza help in uptake of N, P, K and Ca. They, particularly help in phosphorous nutrition.

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