Seaweed extract manufacturer in India: liquid and granules
Nine seaweed and algae grades, Ascophyllum, Kappaphycus, Sargassum and Spirulina, made at our plant in Bhavnagar, Gujarat. Bulk, private label and export.
Grades we manufacture
| Grade | Form | What it is |
|---|---|---|
| Ascophyllum nodosum 15% | Liquid | A concentrated extract of the North Atlantic brown seaweed Ascophyllum nodosum, the most widely used seaweed in biostimulants worldwide. |
| Ascophyllum nodosum 7% | Liquid | A lower-concentration Ascophyllum nodosum extract, a cost-effective choice for retail packs and regular foliar programmes. |
| Kappaphycus alvarezii 24% | Liquid | A concentrated extract of the red seaweed Kappaphycus alvarezii, which is farmed along India's south-east coast. |
| Kappaphycus alvarezii 9.5% | Liquid | A mid-strength Kappaphycus alvarezii extract for foliar and drip use in field and horticulture crops. |
| Kappaphycus alvarezii 7.2% | Liquid | A ready-to-dilute Kappaphycus alvarezii extract suited to retail packs and frequent foliar sprays. |
| Sargassum tenerrimum 10% | Liquid | A liquid extract of Sargassum tenerrimum, a tropical brown seaweed found along Indian coasts. |
| Sargassum tenerrimum 2% | Granular | Sargassum tenerrimum extract in granular form, so seaweed can go into the soil with basal fertiliser. |
| Kappaphycus alvarezii + Sargassum swartzii (1:1) | Liquid | Equal parts red seaweed (Kappaphycus) and brown seaweed (Sargassum) extract, combining two seaweed profiles in one liquid. |
| Spirulina 10% | Liquid | An extract of Spirulina, a blue-green micro-alga rich in protein, used as an algal biostimulant input. |
Every grade above is covered by our Gujarat Directorate of Agriculture NOC under Schedule VI. Click a grade for its page.
Ascophyllum, Kappaphycus, Sargassum and Spirulina
Seaweed extracts are made by breaking down the cell walls of marine algae and concentrating the soluble fraction. They carry naturally occurring polysaccharides such as alginates, mannitol, betaines, trace minerals and plant hormone-like compounds. Composition depends on the species: Ascophyllum nodosum is a cold-water brown alga, Kappaphycus alvarezii is a red alga farmed in warm coastal waters including India's south-east coast, and Sargassum is a tropical brown alga.
Which seaweed should you choose?
Ascophyllum nodosum is the most widely used and studied seaweed for biostimulants worldwide. Kappaphycus alvarezii is a red seaweed farmed in India, and its extract (often called K-sap) is used widely in Indian field crops. Sargassum is a tropical brown seaweed found along Indian coasts. Blends combine profiles. Read Kappaphycus vs Ascophyllum vs Sargassum.
Liquid or granules?
Liquid extracts suit foliar spray and drip. Seaweed granules carry the extract into the soil with basal fertiliser, which is why they are popular with farmers who broadcast. See our granules range.
Where it is used
| Situation | Why seaweed is used | Grades to ask for |
|---|---|---|
| Heat, drought or salinity | Supporting stress tolerance | Ascophyllum nodosum 15%, Kappaphycus alvarezii 24% |
| Flowering and fruit set | Supporting set and fruit development | Ascophyllum nodosum 7%, Kappaphycus + Sargassum (1:1) |
| Early growth and transplanting | Root and shoot growth, recovery | Kappaphycus alvarezii 9.5% or 7.2%, Spirulina 10% |
| Basal soil application | Seaweed with fertiliser at sowing | Sargassum tenerrimum 2% granular, humic + seaweed granules |
Results vary with crop, soil, weather and practice. Follow the label, run a small trial first and scale what works on your farm. Nothing on this page is a guarantee of yield.
How to use it
Application methods
- Foliar spray
- Drip or fertigation
- Seed or seedling dip
- Soil application (granular grades)
Dose and timing
Dose depends on the grade, crop, growth stage and method. The dose is printed on every label, and we send a crop-wise dose chart with every quote.
Manufacturer-direct supply
Why buy from Gujarat Bio Organics
- Our own plant at GIDC Shihor, Bhavnagar, Gujarat, manufacturing since 2009
- 100 KL of liquid and 2,500 tonnes of solid products every month
- No minimum order quantity and dispatch in about one week
- In-house R&D for formulation, stability and crop programmes
- Gujarat NOC for 36 biostimulant grades and 11 biofertiliser types
- Bulk, private label, export or our Immunity brand from one supplier
Buying terms
- Minimum order
- None. Trial quantities are quoted too.
- Lead time
- About one week from confirmed order
- Liquid packs
- 250 mL, 500 mL, 1 L, 5 L, 10 L, 20 L, 25 L, 35 L, 50 L, 220 L drums and 1000 L IBC
- Solid packs
- 1, 2, 4, 5, 8, 10 and 20 kg bags or buckets, 25 and 50 kg bags, 600 kg and 1000 kg jumbo bags
- Supply options
- Bulk, private label / OEM, export (FOB or CIF) or our Immunity brand
- Samples
- Free. Freight or courier, customs duty and other charges are paid by the buyer.
- Documents
- Specification sheet, NOC copy and third-party test report on request
Questions buyers ask
What is seaweed extract used for in agriculture?
Seaweed extract is used to help crops tolerate heat, drought and salinity, to support flowering and fruit set, and to support root and shoot growth and recovery after stress. It is applied as a foliar spray, through drip or as granules in the soil.
What is the difference between Ascophyllum, Kappaphycus and Sargassum extracts?
They come from different seaweeds. Ascophyllum nodosum is a North Atlantic brown alga, Kappaphycus alvarezii is a red alga farmed in tropical waters including India, and Sargassum is a tropical brown alga. Each has a different composition, so the best choice depends on crop and purpose.
What does 'Kappaphycus alvarezii 24 (liquid)' mean?
It is the grade name as listed under Schedule VI of the Fertiliser Control Order: Kappaphycus alvarezii seaweed extract at 24% in liquid form. We also make the 9.5% and 7.2% Kappaphycus grades.
Seaweed granules or liquid seaweed: which should I use?
Use granules for basal or broadcast application with fertiliser, and liquid for foliar sprays and drip. Many programmes use granules at sowing and liquid sprays at flowering.
Can seaweed extract be mixed with humic acid?
Yes. Seaweed and humic acid are commonly applied together, and we make ready blends of humic acid plus seaweed extract in liquid, powder and granules.
What is the dose of seaweed extract per litre of water?
It depends on the grade and concentration. Follow the label, or ask us for the dose chart for the grade you buy.
What is the price of seaweed extract (25 kg or 25 L)?
Price depends on the grade and concentration, the form (liquid, powder or granule), the pack size, the order quantity and, for export, the Incoterm and destination port. We do not publish a price list because bulk, private-label and retail packs are priced differently. Send the grade, quantity and destination and we reply with a quote, usually within one working day.
Do you export seaweed extract?
Yes. We ship to GCC countries, Africa, the Russian Federation, Europe and the Americas, FOB or CIF from Indian ports, in drums, IBCs or your private-label packs.
Related pages
- Kappaphycus alvarezii 24% liquid
- Ascophyllum nodosum 15% liquid
- Sargassum tenerrimum 2% granularSeaweed granules
- Seaweed extract uses in agricultureGuide
- Which seaweed to chooseComparison
- Humic acidCommon partner input
Tell us the grade, quantity and destination.
We reply with a quote and a free sample.