The concept of Integrated Nutrient Management is the continuous improvement of soil productivity on long term basis through appropriate use of fertilizers and organic manures and their scientific management for optimum growth, yield and quality of crops and cropping systems in specific agroecological situations. The Integrated Nutrient Management helps to restore and sustain the soil fertility and crop productivity. This strategy also checks the nutrient deficiency and soil problems. The INM strategies focus on the following areas: 

1. Reduction of nutrient losses from the applied fertilizers 

2. Fertilizer application to synchronise with the crop demand 

3. Timing, placement and choice of the fertilizers 

4. Controlled release of nutrients 

5. Retention and efficient use of the native soil nutrients 

6. Research and development of alternative sources of nutrients 

The components of INM are the following: 

1. Organic manures (Farmyard manure, crop waste, animal waste, industrial waste, sludge, oil cakes, etc.) 

2. Bio-fertilizers (Rhizobia, Azospirillum, Azotobacter, Phosphobacteria, etc.) 

3. Chemical fertilizers (Urea, Urea super granules, Single Super phosphate, Muriate of potash, micronutrient fertilizers). 

4. Green manure and Green leaf manure (Sesbania rostrata, S.aculeata, Crotalaria juncea, Azolla, etc.)