Product Information
- Product Name: Seaweed Extract 18%
- Description: A premium natural liquid biostimulant and organic fertilizer derived from marine brown algae (primarily Ascophyllum nodosum or equivalent high-quality kelp species). This product features a high concentration of 18% seaweed solids (w/v), providing elevated levels of natural plant growth regulators, alginic acid, trace elements, and organic matter. It serves as an advanced plant growth promoter and soil conditioner, complementing nutrient programs rather than acting as a primary NPK source.
- Form: Dark brown to black viscous liquid
- Odor: Characteristic mild to moderate seaweed scent
- Source: Extracted from selected fresh or dried marine algae through low-temperature, enzymatic, or alkaline extraction processes to maximize retention of bioactive compounds.
- CAS No.: 84775-78-0 (common for Ascophyllum nodosum extract)
Key Specifications
| Parameter | Value/Range |
|---|---|
| Seaweed Extract Content | 18% (w/v) minimum |
| Alginic Acid | 4–6% (typical) |
| Organic Matter | 15–20% |
| Potassium (K₂O equivalent) | 3–5% |
| Nitrogen (N) | 0.8–1.8% |
| Phosphorus (P₂O₅) | 0.2–0.8% |
| Trace Elements | Present (Fe, Zn, Mn, Cu, B, Mo, I, etc.) |
| Plant Growth Regulators | Cytokinins, auxins, gibberellins (500–1000 ppm typical) |
| pH | 8.5–11.0 |
| Density | 1.15–1.25 g/ml |
| Solubility | 100% water-soluble |
Benefits and Functions
- Delivers superior stimulation of seed germination, extensive root system development, and vigorous plant growth.
- Significantly improves nutrient absorption efficiency and soil aggregation through elevated alginic acid content.
- Provides enhanced resistance to abiotic stresses (drought, salinity, temperature extremes) and biotic stresses (pests, pathogens).
- Strongly promotes flowering, fruit setting, yield increase, and superior produce quality (size, flavor, color, and extended shelf life).
- Completely biodegradable and ecologically safe; fully compliant with organic farming standards.
- Compatible with most agrochemicals and fertilizers.
Recommended Application
- Methods: Foliar spray, soil drench, fertigation, or hydroponic systems.
- Dilution Rates:
- Foliar: 1:1500–1:2500 (0.4–0.7 ml/L water).
- Soil/Root: 1:800–1:1200.
- Seed Treatment: Soak in 1:1500 dilution.
- Dosage: 2–4 L/ha per application; apply 3–5 times across critical growth stages (establishment, vegetative growth, flowering, and fruit development).
- Frequency: Every 10–14 days; tailor to crop type, growth stage, and stress conditions.
- Crops: Highly effective for high-value crops including vegetables, fruits, berries, grapes, citrus, nuts, flowers, turf, and protected cultivation systems.
Storage and Handling
- Store in a cool, dry place protected from direct sunlight and extreme temperatures.
- Shelf Life: 2–3 years under optimal storage conditions.
- Precautions: Non-toxic and non-irritating; avoid eye contact. Rinse with water if contact occurs. Use standard protective equipment during bulk handling.
Safety and Environmental Notes
- Non-hazardous classification; fully biodegradable with minimal ecological footprint.
- Contributes to sustainable agriculture by enhancing natural plant defenses and reducing chemical input requirements.

