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Inoculation with Nitrogen Fixing Bacteria

- Rhizobium species of a proper type which will form a symbiotic association with a particular legume may be absent in the soil. Inoculation of legumes with Rhizobium is therefore found to be necessary.

Legume seeds are inoculated before planting with strains of Rhizobium of known effectiveness. This is called pre inoculation. Bacterial cultures are available commercially for this purpose.

Seeds inoculated with such cultures assure the presence of desirable species and strains of Rhizobium as soon as young rootlets are formed.