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hosphate plays a vital role in the balanced nutrition of the plants. Most of the Indian soils are low to medium in their available P content and require external application of
P for good harvest. However, the level of application is low in India. The high price of chemical fertilizers has dampened the use of P fertilizers by Indian farmers. India is poised for second green revolution for which new and emerging technologies will play a major role. There is an urgent need to substitute the costly chemical fertilizers and evaluate the posibilities of utilizing the indigenous sources of P rock as a direct source of P for crop production.

- a value - added product produced by co-compositing different organic wastes with high
grade rock phosphate in fine size has become a useful and effective alternate to costly chemical fertilizers. Moreover, it has equal residual effect which results in substantial reduction in the utilization of fertilizers. Researches carried out on diverse crops such as wheat, soybean, mustard, groundnut, cotton, chilly, cluster bean, tobacco, betel, rice, gram and cowpea in different agro- climatic conditions unequivocally show the effectiveness of PROM.
 
 
 
 
- (Phosphate Rich Organic Manure) is produced by co-composting high-grade (+32%
P2O5) rock phosphate in very fine size (say 80% finer than 54 microns). Needless to say, the finer the rock phosphate the better is the agronomic efficiency of PROM. The best results were obtained on the filed using 3 to 4 tonnes of compost or farmyard manure that contained minimum of 200 Kg rock phosphate or a higher dose as recommended by the agricultural scientists depending on the soil conditions. Addition of phosphate solubilising bacteria improves the efficiency of PROM. Phospho-compost technology developed by Indian Council of Agricultural Research (ICAR) is similar to PROM and the difference is that low grade (+18% P2O5) rock phosphates are also allowed to make phospho-compost. M/s Rajasthan State Mines & Minerals Limited initiated and independently funded research work on PROM.

A variety of organic materials can be used in the process of composting such as dung, agricultural crop wastes, press mud from sugar industry, solid wastes from fruit juice industry, oil cakes, waste from wool industry etc . While composting these organic materials it should be ensured that C: N ratio is at 30:1 and the best will be at 20:1 at the end of composting process.

It is interesting to note that ancient Indian text “Vrikhayurveda” (meaning, health science of trees or plants) written by Surapala mentions a preparation “Kanupa” which is a compost consisting of animal bones. Even today animal bones are a good replacement for rock phosphate.

 
 
  Functioning of PROM  
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  Future Research Needs In PROM Technology  
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  Office Bearers  
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  Some of the Founder Members  
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  Institutional Members of Prom Society  
 
Honorary Members of the PROM Society
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Prom Society has been formed by a group of more than 127 scientists, engineers and other professionals who are involved in the development of  PROM technology. So for 23 industries have joined as institutional members and has 19 distinguished fellow (honorary) members. The Society welcome those interested in the development & popularization of PROM technology to join as members/institutional members.