High Purity Mineral Potassium Fulvate Powder from Leonardite
Potassium Fulvate Powder, also named potassium fulvic acid powder, is a high-activity organic biostimulant extracted from natural leonardite lignite via low-temperature physical activation technology. It is the core high-value derivative of humic substances, featuring ultra-small molecular weight, strong water solubility and superior biological activity compared with regular potassium humate.
This black fine powder integrates organic fulvic acid and plant-available potassium oxide in one product. It acts as both soil amendment and high-efficiency potassium fertilizer, widely adopted by commercial farms, greenhouse growers, fruit & vegetable planters and organic agriculture distributors worldwide. Different from chemical potassium fertilizers, mineral potassium fulvate delivers long-term soil restoration plus instant nutrient supplementation without soil salinization risks.
Standard Technical Specifications (Export Grade)
| Parameter | Specification |
|---|
| Fulvic Acid | ≥50% |
| Total Humic Acid | ≥55% |
| K₂O (Potassium Oxide) | ≥12% |
| Water Solubility | 100% fully soluble, no sediment |
| Mesh Size | 100-120 mesh ultra-fine powder |
| pH Value | 8.0-10.0 (mild alkaline, neutralize acid soil) |
| Moisture | ≤15% |
| CEC Value | 100-150 meq/100g (strong nutrient retention capacity) |
| Certifications | ISO9001, OMRI-listed available for organic farming |
Core Agricultural Benefits
Restore Degraded Soil & Fix Compaction
Potassium fulvate promotes soil aggregate structure formation, breaks hard compacted soil, boosts air permeability and water retention capacity. It raises soil cation exchange capacity (CEC), locks nitrogen, phosphorus, potassium and trace elements to avoid nutrient leaching. For saline-alkali land, it balances soil pH, reduces salt damage and activates dormant beneficial microorganisms in rhizosphere. It also chelates heavy metals (Pb, Cd, Cr) to reduce soil contamination hazard.
Boost Root Growth & Seed Germination
Small fulvic acid molecules penetrate plant cell walls rapidly. Drench application stimulates massive fibrous root growth, improves seed germination rate and seedling survival rate. Field tests show 30% more lateral roots after continuous use, helping crops resist drought and waterlogging stress.
Improve Fertilizer Utilization Rate
As natural chelating agent, it binds trace minerals (Fe, Zn, Mn, B) to make them absorbable by plants. Mixed with NPK chemical fertilizers, it reduces nutrient fixation by soil particles, lifting chemical fertilizer efficiency by 20-30% and cutting farmers' input costs.
Enhance Crop Anti-Stress Ability
Strengthen crop tolerance against drought, cold, high temperature, saline soil, fungal diseases and continuous cropping obstacles. It relieves pesticide & herbicide phytotoxicity, reduces leaf yellowing and premature aging problems.
Upgrade Fruit & Crop Quality
Promote sugar accumulation in fruits, increase fruit firmness, brighten fruit color, extend shelf life. For leafy vegetables, raise vitamin and soluble protein content, reduce nitrate residue to meet organic export standards.
Eco-Friendly Sustainable Farming Input
Natural mineral source, zero chemical residue, compatible with organic farming standards. It cuts groundwater nutrient pollution and supports carbon sequestration in soil, perfectly matching global green agriculture trends.
Application Scenarios & Methods
Applicable Crops
- Fruit trees: Apple, grape, citrus, mango, banana, cherry
- Vegetables: Tomato, cucumber, pepper, potato, lettuce, strawberry
- Field crops: Wheat, corn, rice, cotton, peanut, tobacco
- Horticulture: Flowers, lawns, nursery seedlings, medicinal herbs
Application Methods
Foliar Spraying (Most Popular)
Dilute 800-1200 times with clean water, spray on leaf surface during seedling stage, flowering stage and fruit expansion stage, 2-3 times per growing cycle. Resist hard water, no flocculation even mixed with most pesticides and trace foliar fertilizers.
Drip Irrigation / Flood Fertigation
1-2 kg powder per acre each time, apply together with water-soluble NPK fertilizer, suitable for large greenhouses and commercial farms.
Soil Base Application
Mix with organic base fertilizer, 3-5 kg per acre before planting to improve whole-layer soil vitality.
Seed Soaking Treatment
Dilute 1500 times, soak seeds for 6-12 hours to accelerate germination and strengthen seedling immunity.
Product Advantages
- Pure mineral leonardite raw material, no biochemical fermented waste, high bioactivity stable batch by batch
- Ultra-fine powder, instant dissolving, no clogging drip irrigation pipes
- Anti-hard water formula, no precipitation in high-calcium/magnesium irrigation water
- Low sodium & low chloride, safe for sensitive fruit and cash crops
- Customizable index: Fulvic acid 30%-90% available, packing 25kg woven bag / kraft bag / small retail bags
- Factory direct supply, stable annual output 10,000 tons, flexible MOQ: 1 ton for trial order, FOB Tianjin/Qingdao port
Storage & Handling Notes
- Store in cool, dry, ventilated warehouse, avoid direct sunlight and damp environment
- Do not mix with strong acidic pesticides or sulfur-containing fungicides
- Conduct small-area comparison test before large-scale application for new crop varieties
- Shelf life: 24 months under sealed dry storage
Wholesale Cooperation
We are a professional humic acid manufacturer with over 15 years export experience. We provide customized formulas, private label packaging, third-party inspection reports and competitive bulk prices for global distributors, fertilizer factories and agricultural importers.
If you need free samples, technical guidance for crop matching or quotation, please contact us via the form below.
Frequently Asked Questions
Q: What's the difference between Potassium Fulvate and Potassium Humate?
A: Fulvic acid has smaller molecular weight, higher activity, fully soluble in all pH water, can be absorbed via leaf surface. Humate has larger molecules, mainly works on soil improvement. Most growers mix both for combined soil & crop effects.
Q: Can I use potassium fulvate powder for organic certified farms?
A: Our mineral potassium fulvate can provide OMRI certification documents, fully compliant with EU & US organic planting standards.
Q: What's the minimum order quantity?
A: MOQ 1 ton for trial order; bulk order over 20 tons gets extra factory discount.
Q: Will this powder block drip irrigation pipelines?
A: 100% water-soluble fine powder with anti-hard water treatment, no sediment or blockage when diluted correctly.
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