90% Humic Acid Leonardite Source Water Soluble Potassium Humate Flake for Fertigation and Bulk Supply

Potassium Humate Flake is one of our flagship humic acid raw materials, widely stocked and exported for B2B agricultural partners worldwide. Extracted from high-quality natural leonardite, this flake-type potassium humate features a glossy jet-black appearance, outstanding wetting properties, and rapid dissolution in water. With low insoluble residue, it will not block drip emitters, irrigation tubes, or sprinkler nozzles — a core advantage for modern fertigation systems used in orchards, greenhouses, and large-scale field planting.

This product delivers powerful soil remediation and crop nutrition functions. It effectively neutralizes saline-alkali soil, lowers soil salt content, breaks soil compaction, and rebuilds granular soil structure. Active humic acid stimulates the proliferation of beneficial soil microbes, activates locked-up nutrients in the soil, and chelates nitrogen, phosphorus, potassium, and trace elements to raise fertilizer efficiency and reduce nutrient runoff.

For crops, it promotes fibrous root germination and root system expansion, improving water and nutrient absorption capacity. It enhances plant resistance against drought, cold stress, salinity damage, and continuous cropping diseases. Meanwhile, it optimizes flower bud differentiation, lifts fruit setting rate, and improves fruit coloring, sweetness, firmness, and storage performance — helping your end farmers increase yield and gain better market prices.

This flake potassium humate is extremely popular among fertilizer formulators, agricultural importers, regional distributors, and large plantation owners. Compared with powder form, it cuts dust pollution during loading, mixing, and handling, greatly improving workplace safety.

• Stable batch-to-batch consistency with fixed humic acid and K₂O content
• Complete export paperwork: COA, Heavy Metal Test Report, MSDS, packing list, and commercial invoice
• Standard packing: 25 kg woven bag with inner PE liner
• Flexible order options: trial LCL order and full FCL container shipment are both acceptable
• Custom service: customized indicators, customized bag printing, and private label / OEM formulation support
• Strict QC inspection before shipment, with third-party testing support on request