Synopsis Phosphate Rich Organic Manure (PROM)-a value added product produced by co-composting high grade phosphate rock in fine size with organic waste, has become a popular alternative to costly chemical fertilizers during last couple of years and its market is picking up at a rapid pace. A large number of laboratories across the country have been engaged in the study of effective use of PROM, particularly its use in organic farming and biogas technology. The present volume is a compendium of information generated during last two years on this new and emerging technology. The papers included in this volume contain data on the studies conducted on the agronomic effectiveness of PROM, its use in organic farming and biogas technology. These data will prove useful in wider applications of PROM technology.