85% Min Humic Acid Leonardite Source Water Soluble Potassium Humate Powder for Fertilizer Formulation

Potassium Humate Powder is one of the most widely used humic acid raw materials for fertilizer manufacturers and agricultural distributors worldwide. It is extracted and refined from high-grade natural leonardite, then processed into a fine dark black powder with high humic acid content and excellent bioactivity.

With its ultra-fine particle size, the powder dissolves quickly in clean water to form a uniform liquid solution. It is suitable for foliar spraying, root flushing, and drip fertigation, and serves as a core additive for compound water-soluble fertilizers, liquid humic fertilizers, and organic fertilizer formulas.

This powder grade features a high chelating capacity. It can chelate calcium, magnesium, iron, zinc, and other medium and trace elements, preventing nutrient precipitation, greatly improving fertilizer utilization efficiency, and reducing nutrient waste.

When applied to soil, it alleviates soil salinization, breaks soil hardening, activates dormant soil nutrients, and feeds beneficial soil flora, rebuilding a healthy soil environment for continuous cropping farms.

For crops, it stimulates rapid root initiation and the growth of fine fibrous roots, and strengthens crop tolerance against drought, cold, salt stress, and replant disease. It promotes flower formation, increases fruit set, and improves fruit color, sweetness, and commodity grade, helping growers raise yields and economic benefits.

Compared with flake and granule types, potassium humate powder is the preferred option for fertilizer factories compounding custom fertilizer formulas, because it mixes evenly with other fertilizer raw materials and is easy to use in liquid production.

• Stable batch consistency: fixed index and strict pre-shipment QC inspection.
• Regular specification: Humic Acid ≥85%, K₂O ≥8%; customizable indicators on request.
• Complete export documents: COA, Heavy Metal Test Report, MSDS, packing list, and commercial invoice.
• Standard packing: 25 kg woven bag with inner PE liner, moisture-proof.
• Flexible order support: trial LCL and full FCL container shipment.
• Custom service: custom mesh size, custom bag printing, private label, and OEM formula service.
• Sample support: test samples available; customer bears freight only.

Foliar spray, drip irrigation, root drenching, and as a raw material for fertilizer compounding or liquid fertilizer production.

Fruit trees, vegetables, field crops, cotton, tea, berries, flowers, and all cash crops.

Compatible with most water-soluble NPK and trace-element fertilizers. Do not mix with strong acid products.