Phosphate Rich Organic Manure (PROM)
An organic fertiliser under the Fertiliser Control Order, 1985.
Specification
As notified in the Order, line by line. Values are per cent by weight unless the line says otherwise.
| Parameter | Notified value | |
|---|---|---|
| Moisture per cent. by weight, maximum | 25.0 | |
| (i) | Particle size | Minimum 90% material should pass through 4.0 mm IS sieve |
| (ii) | Bulk density (g/cm³) | less than 1.6 |
| (iii) | Total organic Carbon, per cent. by weight, minimum | 8.0 |
| (iv) | Total Nitrogen (as N) per cent. by weight, minimum | 0.4 |
| (v) | Total Phosphates (as P₂O₅) per cent. by weight, minimum | 8.0 |
| (vi) | C:N ratio | less than 20:1 |
| (vii) | pH (1:5 solution) maximum | 6.5-8.0 |
| (viii) | Conductivity (as dSm-1) not more than | 10.0 |
| (ix) | Heavy metal content (as mg/kg) per cent. by weight, maximum | |
| Arsenic (as As₂O₃) | 10.00 | |
| Cadmium (as Cd) | 5.00 | |
| Chromium (as Cr) | 50.00 | |
| Copper (as Cu) | 300.00 | |
| Mercury (as Hg) | 0.15 | |
| Nickel (as Ni) | 50.00 | |
| Lead (as Pb) | 100.00 | |
| Zinc (as Zn) | 1000.00 |
Tolerance (Schedule IV, Part B): A sum total of Nitrogen, Phosphorus and Potassium nutrients shall not be less than 1 per cent. in case of City Compost, 2.5% in case of Vermicompost, 2.8% in case of organic manure. In case of PROM the Phosphate content in terms of P₂O₅ content shall not be less than 7.8%
Test methods (Schedule IV, Part D): method 1: pH; method 2: Moisture; method 3: Bulk density; method 4: Electrical conductivity; method 5: Organic carbon; method 6: Total nitrogen; method 7: C:N ratio; method 8: Phosphate; method 10: Cadmium, copper, chromium, lead, nickel and zinc; method 11: Mercury; method 12: Arsenic.
Label for this product
The front and back label of Phosphate Rich Organic Manure (PROM) with your company's details: the heading word, every notified line, net quantity, MRP, batch, licence number and customer care, in the format the Order asks for. One PDF for your licence file and your designer.
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Notification history 5 entries
- 15 Feb 2013S.O. 384(E): entry substituted
- 1 Jul 2021S.O. 2671(E): line (v) substituted (was “10.4”)
- 1 Jul 2021S.O. 2671(E): line (viii) substituted (was “8.2”)
- 22 Sep 2022S.O. 4477(E): line (iii) substituted (was “10.0”)
- 22 Sep 2022S.O. 4477(E): line (vii) substituted (was “6.7”)
Consolidated by NanoKheti from the Fertiliser (Inorganic, Organic or Mixed) (Control) Order, 1985, as amended up to the Ninth Amendment Order, 2026 (S.O. 4045(E), 22 Jul 2026), for reference. The Gazette text is authoritative; this page is not legal advice. Check the notification before labelling, licensing or buying. Checked for later changes on 20 October 2026.