[ TL;DR ]
Tianjin Agritech Bioindustry (algasmars.com) supplies two verified seaweed extract fertilizer formats: Seaweed Extract Algamas (OMRI-listed flake/powder, 10% min. alginic acid, 16-18% K2O, foliar dilution 1:2000-3000) and Soluble Seaweed Extract Powder (100% water-soluble, 10-18% K2O, suited to both foliar spray and fertigation, 1-ton MOQ with free 500g samples). Choosing between them mostly comes down to application method and dosing precision.
Overseas buyers sourcing seaweed-based biostimulants often hit the same wall: two products on a supplier's site look nearly identical on the surface, but the fine print on solubility, dilution ratio, and packaging determines whether a shipment actually works in the field. For agronomists and import managers evaluating seaweed extract fertilizer suppliers in China, the difference between a flake-form extract and a fully soluble powder affects everything from tank-mixing time to freight cost per active unit.
This guide compares the two core seaweed extract lines manufactured by Tianjin Agritech Bioindustry Co., Ltd. side by side, using only the specifications, dosages, and certifications published on the company's own product pages.
Seaweed Extract Algamas: The OMRI-Listed Flake/Powder Line
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Seaweed Extract Algamas is produced from wild Laminaria and Ecklonia maxima kelp using low-temperature enzymatic hydrolysis, a process that preserves more than 60 natural active substances - amino acids, plant hormones (auxin, cytokinin), seaweed polysaccharides, and trace elements - without heat-degrading them.
Because the extract is 100% water-soluble despite its flake form, it works across foliar spray, drip irrigation, and soil application. It is certified organic and OMRI-listed - a certification specifically relevant to importers supplying the organic and sustainable-agriculture segment. |
Seaweed Extract Algamas - flake/powder form |
Algamas Flake vs. Soluble Seaweed Extract Powder: Side-by-Side
Both products originate from the same brown-algae feedstock and enzymatic-hydrolysis process, but they are formulated for different buyer priorities - certification-first versus dosing flexibility.
| SPEC | SEAWEED EXTRACT ALGAMAS | SOLUBLE SEAWEED EXTRACT POWDER |
|---|---|---|
| Form | Flake / powder | Fine soluble powder |
| K2O content | 16–18% | 10–18% |
| Alginic acid | 10% min. | 10% min. |
| Recommended use | Foliar, drip irrigation, soil application | Foliar spray, fertigation |
| Certification | OMRI listed, organic | OMRI-listed raw material, meets organic ag standards |
| Packaging | 1kg/bag (20bag/CTN); 20kg/CTN | 10g / 100g / 1000g / 20kg, OEM custom |
In practice: buyers targeting certified-organic retail programs or fixed field dosing tend to select Algamas flake; buyers who need flexible small-pack OEM branding or fertigation-line compatibility tend to select the soluble powder.
Dilution Ratio at a Glance
Dilution requirements are one of the most-asked questions from importers pricing freight against active-ingredient concentration. The chart below reflects the manufacturer's published foliar application rates.
| Algamas - vegetables |
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1:3000 | ||
| Algamas - fruit trees |
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1:2000–3000 | ||
| Soluble powder - foliar |
|
1kg/ha | ||
| Soluble powder - fertigation |
|
3–5kg/ha |
Tomato Foliar Timing (Algamas, Field-Verified)
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01/ Six-leaf stage |
02/ Early bloom |
03/ While picking |
04/ 2 weeks after |
Field application on grape - Algamas irrigation trial |
In the manufacturer's grape trial, growers irrigated twice every 30 days at 3kg/ha and applied a pre-bloom foliar spray at 1kg/ha. The reported outcome was uniform crop growth, higher yield, and improved fruit quality - consistent with the extract's cytokinin and gibberellin content supporting cell division and f ruit set. |
Company Background: Tianjin Agritech Bioindustry Co., Ltd.
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Operating under the KG Biotechnology Group and rooted in the China Seaweed Association's Institute of Science and Technology, the company's senior engineers bring over 30 years of biostimulant fertilizer industry experience to formulation and OEM support. Production runs on dedicated seaweed extraction and drying lines, liquid/powder formulation tanks, and automated packaging, backed by an in-house lab for raw-material analysis and batch quality testing. |
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| Senior engineering experience | 30+ years |
| Certification | OMRI listed / organic |
| Target export markets | EU, Latin America, Middle East, Asia |
| Services | OEM / ODM, distributor partnerships |
FAQ
Q: Is Seaweed Extract Algamas certified for organic farming?
A: Yes. The product is OMRI-listed and produced from 100% wild kelp with no synthetic hormones or GMO ingredients, meeting organic farming standards.
Q: What is the minimum order quantity, and can I get a sample first?
A: The Soluble Seaweed Extract Powder line supports a 1-ton minimum order, with a free 500g trial sample available before committing to a full order.
Q: Do the products contain artificial hormones or additives?
A: No. Both lines are pure natural extracts with no artificial hormones or hormone-like growth regulators, in line with organic agriculture certification standards.
Q: Can packaging be customized for private-label (OEM) distribution?
A: Yes. The soluble powder supports OEM labeling and package sizes from 100g to 25kg, customized to the buyer's brand requirements.
Q: What quality documentation is available with each shipment?
A: Third-party test reports and internal quality standards are provided, with each batch checked for physical/chemical index and solubility to ensure stability during transit and storage.
OMRI listing - Seaweed Extract Algamas |
Buyers evaluating supplier credibility for organic-program registration can request the underlying test reports and certificate documentation directly - this is standard practice before container-level orders on a new biostimulant line.
Whichever form fits your crop program, matching dilution ratio to application method - foliar, fertigation, or soil - is what determines whether a seaweed extract fertilizer performs as tested. For a formal quotation or a technical data sheet, contact Tianjin Agritech Bioindustry's technical team via email or WhatsApp above. |