Organic fertilizers do, indeed, have valuable properties as soil amendments. In particular, their humus content enhances the efficiency of mineral fertilizer, improves soil structure, increases water retention by soil, and decreases soil erosion. All the nutrient elements are prevent to some extent in soil or other natural materials in forms useful for the plants but, with the frequent exception of micro-nutrients such supply in generally not adequate for sustained aid economic production of crops.
The demand for fertilisers is divisible into three nutrients: nitrogen (N), phosphates (P2O5) and potash (K). Potash is used in the mineral form and is mainly imported for India's fertiliser requirements. Some plants produce only nitrogenous fertilisers, a few phosphatic and others mixed. This makes India the third largest producer of chemical fertilizers in the world. There are in the country some 56 large fertilizer plants (29 producing urea, 21 producing DAP and complex fertilizers, 5 producing straight nitrogenous fertilizers), while the rest 9 units produce ammonium phosphate. Entrepreneurs who invest in this project will be successful.
Few Indian major players are as under
· Amico Agrotech (O P C) Pvt. Ltd.
· Arawali Phosphate Ltd.
· Aries Agro Ltd.
· Basant Agro Tech (India) Ltd.
· Brahmaputra Valley Fertilizer Corpn. Ltd.
· Coimbatore Pioneer Fertilzers Ltd.