Seaweed (Kappaphycus alvarezii) extract- 17% (Liquid)
A seaweed extract biostimulant in liquid form, notified under FCO Schedule VI. Key notified measures: D-Galactose-4-O-Sulphate ≥ 4.2 % w/w; Carbohydrates ≥ 6.2 % w/w. Notified for cucumber and tomato.
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The tables below show the amended wording.
Composition
As notified in the Gazette, ingredient by ingredient.
| Ingredient | Content | Limit | |
|---|---|---|---|
| i | Seaweed (Kappaphycus alvarezii) extract) per cent. by volume, minimum | 17% v/v | Minimum |
| ii | Organic acids (acetic acid, citric acid and lactic acid) per cent. by volume, minimum | 2.5% v/v | Minimum |
| iii | Water per cent. by volume | QS% v/v | Exact / specified |
| 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 | 4.2% w/w | Estimation of carrageenan / derivatives |
| ii | Carbohydrates per cent. by weight, minimum | 6.2% w/w | Method 35: Estimation of carbohydrates |
| iii | pH (50 % aqueous solution) | 3- 5pH | Method 1: Estimation of pH |
| iv | Specific gravity | 1.10- 1.15Specific gravity | Method 2: Estimation of specific gravity |
| v | Solubility per cent. by weight, minimum | 98% w/w | Method 5: Estimation of water solubility |
| vi | Total organic carbon per cent. by weight, minimum | 4.8% w/w | Method 4: Estimation of organic matter and organic carbon |
| vii | Total dissolved solid per cent. by weight, minimum | 19.5% w/w | Refer latest Schedule VI Part D / applicable notified method |
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 1000 ml/ha | 405 ml | 1.21 litre |
| Tomato | Four foliar applications at 1000 ml/ha | 405 ml | 1.62 litre |
Notification history
- 13 Aug 2025S.O. 3742(E): entry inserted
- Later amendmentS.O. 876(E): Specification serial (i): “Carrageenan” changed to “D-Galactose-4-O-Sulphate”.
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.