PROM fertilizer” refers to Phosphate-Rich Organic Manure, an organic alternative to chemical phosphatic fertilizers like DAP and SSP. It is produced by co-composting high-grade rock phosphate with organic matter and beneficial microorganisms.
Core Production Steps
- Raw Material Preparation:
- Mixing and Blending:
- Microbial Inoculation:
- Co-Composting (Bio-Activation):
- Curing and Maturation:
- Post-Processing:
- Drying & Sieving
- Granulation (Optional
- Packaging
A granular PROM setup requires a wet granulation line to combine fine rock phosphate with composted organic matter into uniform, easy-to-handle pellets.
Phosphate Rich Organic Manure (PROM) Specification
S.NO Parameter Requirement
- Moisture per cent by weight, maximum : 25%
- Particle size – Minimum 90% material should pass through 4.0mm IS sieve
- Bulk density (g/cm³) less than : 1.6
- Total organic carbon, per cent by weight, minimum : 8.0*
- Total Nitrogen (as N) per cent by weight, minimum : 0.4
- Total phosphates (as P?O) per cent by weight, minimum : 8.0
- C:N ratio less than : 20:1
- pH (1:5 solution) maximum : 6.5-8.0*
- Conductivity (as dSm¹) not more than :10.0
- Heavy metal content (as mg/kg)
Per cent by weight, maximum Arsenic
(as As?O?) : 10.00
Cadmium (as Cd) : 5.00
Chromium (as Cr) : 50.00
Copper (as Cu) :300.00
Mercury (As Gg) : 0.15
Nickil (As Ni) : 50.00
Lead (As Pb) :100.00
Zinc (As Zn) :1000.00
Other products – Gypsum, Organic Manure, Soil conditioner & Potash derived from Molasses.