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.
Source: Wikipedia — Phosphate rich organic manure (CC BY-SA 4.0)