ROM-Rhizobium is a nitrogen-fixing bacterium that lives in symbiotic association with leguminous plants. These bacteria form root nodules in pulses, groundnut, soybean, and green manure crops and fix the nitrogen from the atmosphere benefitting the crop and soil. Nodules act like a mini fertilizer factory and continue to supply nitrogen until their decay. The leaf fall, root exudates, and the decay of nodules contribute to enriching soil nitrogen. This renders the use of less nitrogenous fertilizer to the succeeding crop after pulses or green manure cultivation. Native soil rhizobia are not as effective as selected elite rhizobia recommended for seed inoculation or soil application.
ROM-Rhizobium has a bacterial count of not less than 2×109 /g/ml and can be used in red gram, green gram, black gram, cowpea, Bengal gram, horse gram, groundnut, soybean, and green manure crops. This biofertilizer is available in liquid or powder formulation and can be easily applied on seed and soil.
Dosage: For seed treatment, 1 kg of Rhizobium is recommended for the seeds required for 1 acre. This shall be mixed with an adequate quantity of water, coated on seed, shade dried for 30 min, and sown.
For soil application, 5 kg acre is to be applied after mixing with a small quantity of well-decomposed organic manure.