Seaweed (Kappaphycus alvarezii) extract 13.5% (Liquid)
A seaweed extract biostimulant in liquid form, notified under FCO Schedule VI. Key notified measures: D- Galactose-4-O-sulphate ≥ 2.5 % w/w; Total carbohydrates ≥ 4.8 % w/w. Notified for cucumber and tomato.
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Composition
As notified in the Gazette, ingredient by ingredient.
| Ingredient | Content | Limit | |
|---|---|---|---|
| i | Seaweed (Kappaphycus alvarezii) extract per cent. by weight, minimum | 13.5% w/w | Minimum |
| ii | Organic (Acetic acid, Citric acid, Lactic acid) per cent. by weight, minimum | 1.5% w/w | Minimum |
| iii | Water per cent. by weight, maximum | 85.0% 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 | D- Galactose-4-O-sulphate per cent. by weight, minimum | 2.5% w/w | Method 46: Estimation of lactose |
| ii | Total carbohydrates per cent. by weight, minimum | 4.8% w/w | Method 35: Estimation of carbohydrates |
| iii | pH (50% aqueous solution) | 3.0- 5.0pH | Method 1: Estimation of pH |
| iv | Total organic carbon per cent. by weight, minimum | 3.8% w/w | Method 4: Estimation of organic matter and organic carbon |
| v | Total dissolved solids per cent. by weight, minimum | 15% w/w | Estimation of TDS/TSS |
| vi | Specific gravity | 1.09- 1.14Specific gravity | Method 2: Estimation of specific gravity |
| vii | Solubility per cent. by weight, minimum | 80% 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 |
|---|---|---|---|
| Cucumber | Three foliar applications at 2 litre/ha | 809 ml | 2.43 litre |
| Tomato | Four foliar applications at 1.25 litre/ha | 506 ml | 2.02 litre |
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.
Show more seaweed biostimulants 52 others in this category
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.