1. Basic components of Integrated Nutrient Management
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2. Basic components of Integrated Nutrient Management
Different components of INM
There are various components of plant nutrients for INM which can be applied in an integrated way. Some of these are mentioned below :
i) Chemical fertilizers
ii) Organic manures like FYM in situ, Vermicompost
iii) Farm wastes like paddy straw, wheat straw
iv) Industrial waste
v) Inclusion of legume crops in cropping system
vi) Biofertilizers like azolla, blue green algae, rhizobium
vii) Crop residues
viii) Green manuring either growing in the same field or incorporating of leguminous plant or leaves.
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3. Basic components of Integrated Nutrient Management
Different components of INM
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4. Basic components of Integrated Nutrient Management
Benefits of INM components
There are numbers of benefits we can achieve through these practices which are laid as follows:
Use of Chemical fertilizer :
Chemical fertilizers are rich in nutrients. They are required in less quantity to supply nutrients as compared to organic manures. But continuous use of chemical fertilizers deteriorate the soil conditions. Therefore, chemical fertilizers should be accompanied by organic /biofertilizer.
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5. Basic components of Integrated Nutrient Management
2. Application of organic manure under rain fed lowland conditions
Improves the bulk density of soil up to a layer of 25 cm.
Reduces resistance to penetration.
Supplements N up to 50% of the nitrogenous requirement of the crop.
Increases available N and N and P use efficiency when combined with 100% of the recommended quantity of NPK + Biofertilizers.
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6. Basic components of Integrated Nutrient Management
3. How green manure improves nutrient use efficiency ?
Green manure improves nutrient use efficiency in various ways :
Green manuring through Sesbania aculeata is equivalent to 60 kg inorganic N/ha.
Incorporation of mungbean after picking pods results in savings of 60 kg inorganic N/ha for the rice crop
Alley cropping to Leucaena leucocephala, Gliricidia sepium and Acacia mangium can provide kg N/ha per year.
Pruning of Sesbania rostrata planted as hedgerows provides 3-4 t/ha dry matter after decomposition, it releases an average of 70 kg N/ha
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7. Basic components of Integrated Nutrient Management
Besides above, green manure helps in
Increasing apparent use efficiency of K when combined with 50% of the recommended NPK.
Having residual effect on the next crop.
Minimizing the adverse effects of AI3+ and /or Fe 2+ in acidic lateritic soils through the chelation of these ions by organic molecules liberated from FYM in the course of mineralization.
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8. Basic components of Integrated Nutrient Management
4. How application of biofertilisers such as azolla and blue-green algae helps?
1. Adds about kg N/ha in the soil.
2. Improves bulk density and reduces penetration resistance when it is added with organic manures.
3. Has a residual effect on the next crop.
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9. Basic components of Integrated Nutrient Management
5. Use of green manure in crop rotation before transplanting rice. 
Supplements about 50% of the total N requirement of rice
Provides about % of the crop’s requirement in the case of rain fed lowlands when the requirement for N is relatively low (60-80 kg N/ha).
Has a mobilizing effect on PK and micronutrients in the soil.
Reduces the leaching and gaseous losses of N, thus increasing the efficiency of applied plant nutrients.
Can skip the P allocation to rice when 30 kg P2O5/ha is applied to the green manure crop.
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10. Basic components of Integrated Nutrient Management
Provides kg N/ha
Improves the soil organic matter.
Improves physico-chemical and biological condition of the soil
It is quite interesting
that Incorporation of
crop residues before rice
Practices to be adopted for use of waste
Various practices can be adopted to convert wastes into suitable products
Convert all available biomass on the farm into compost instead of burning or wasting it.
Make use of cattle excreta as manure rather than as fuel.
Production of compost from paddy straw
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