Seaweed (Ascophyllum nodosum) extract-90 % (Powder/Flake)
A seaweed extract biostimulant in crystal form, notified under FCO Schedule VI. Key notified measures: Alginic acid ≥ 8.0 % w/w; Mannitol ≥ 3.0 % w/w. Notified for paddy (rice).
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Composition
As notified in the Gazette, ingredient by ingredient.
| Ingredient | Content | Limit | |
|---|---|---|---|
| i | Seaweed (Ascophyllum nodosum) extract per cent. by weight, minimum | 90% w/w | Minimum |
| ii | Methylisothiazolinone (preservative) per cent. by weight, minimum | 0.1% w/w | Minimum |
| iii | Water per cent. by weight, maximum | QS% w/w | Maximum |
| iv | Total (per cent.) | 100 | Exact / specified |
Specifications (label claims)
The parameters a sample must meet, with the Part D method used to test each one.
| Parameter | Notified value | Test method | |
|---|---|---|---|
| i | Alginic acid per cent. by weight, minimum | 8.0% w/w | Method 7: Detection and quantification of alginic acid |
| ii | Mannitol per cent. by weight, minimum | 3.0% w/w | Method 10: Estimation of mannitol |
| iii | pH (1% aqueous solution) | 9.0- 11.0pH | Method 1: Estimation of pH |
| iv | Bulk density (gram/cc) | 0.56- 0.75Density | Method 3: Estimation of bulk density |
| v | Total organic carbon per cent. by weight, minimum | 28.0% w/w | Method 4: Estimation of organic matter and organic carbon |
| vi | Solubility per cent. by weight, minimum | 96% w/w | Method 5: Estimation of water solubility |
Tolerance (Schedule VI Part B, S.O. 3922(E)): Seaweed Extract: Ascophyllum nodosum, Sargassum, Kappaphycus, Gracilaria and Ulva: 5% of the specified value of active ingredients or the tracer molecule.
Crops and doses
The Gazette wording is what counts; per-acre figures use 1 hectare = 2.47105 acres.
| Crop | Gazette dose | Per acre, each application | Per acre, season |
|---|---|---|---|
| Paddy (rice) | Three foliar applications at 1000 g/ha | 405 g | 1.21 kg |
Notification history
- 25 Mar 2026S.O. 1574(E): entry inserted
Official notifications: Ministry of Agriculture & Farmers Welfare, biostimulant circulars.
Before you buy or stock it
- Check that the product name, composition and crop on the pack match this page.
- Use only the notified dose for your crop; the calculator converts it to your area.
- Ask the seller for the batch number and expiry date, and keep the bill.
Questions about your crop? Ask our agri expert on WhatsApp.
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Consolidated by NanoKheti from the Gazette of India notifications under Schedule VI of the Fertiliser (Inorganic, Organic or Mixed) (Control) Order, 1985, for reference. The Gazette text is authoritative; this page is not legal advice. Check the notification before labelling, licensing or buying. Covers notifications up to S.O. 1574(E) (25 Mar 2026); checked for later Schedule VI changes on 19 October 2026. Questions? Ask our agri expert on WhatsApp.