PROM(Phosphate Rich Organic Manure)

Phosphate rich organic manure is a type of fertilizer used as an alternative to diammonium phosphate and single super phosphate.

Phosphorus is required by all plants but is limited in soil, creating a problem in agriculture In many areas phosphorus must be added to soil for the extensive plant growth that is desired for crop production. Phosphorus was first added as a fertilizer in the form of single super phosphate in the mid-nineteenth century, following research at Rothamsted Experimental Station in England. Single super phosphate is non-nitrogen fertiliser containing phosphate in the form of monocalcium phosphate and gypsum which is best suited for alkali soils to supplement phosphate and reduce soil alkalinity.

The world consumes around 140 million tons of high grade rock phosphate mineral today, 90% of which goes into the production of diammonium phosphate.[citation needed] Excess application of chemical fertilizers in fact reduces the agricultural production as chemicals destroy natural soil flora and fauna. When diammonium or single super phosphate is applied to the soil only about 30% of the phosphorus is used by the plants, while the rest is converted to forms which cannot be used by the crops, a phenomenon known as the phosphate problem to soil scientists.