What is the need for integrated nutrient management (INM)? Suggest INM for transplanted rice.
Integrated Nutrient Management (INM) emphasizes balanced use of chemical fertilizers, organic manures, and biofertilizers to sustain soil health and crop productivity. The need arises due to declining soil fertility, overuse of fertilizers, micronutrient deficiencies, and environmental concerns. INM maintains nutrient balance, reduces costs, and enhances long-term sustainability.
INM for transplanted rice:
Organic sources: 5–10 t/ha FYM or green manure (Sesbania) before transplanting improves soil structure.
Fertilizers: 100–150 kg N, 40–60 kg P₂O₅, and 40–50 kg K₂O/ha applied in splits.
Biofertilizers: Blue-green algae and Azolla fix atmospheric nitrogen. Phosphate-solubilizing bacteria improve phosphorus availability.
Micronutrients: Zinc sulfate application corrects Zn deficiency common in rice soils.
Such integration ensures higher productivity, better soil fertility, and reduced environmental impacts.
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