Product Overview
Liquid Humic Acid is a ready-to-use concentrated solution (≥12% humic acid) designed for seamless integration into modern irrigation and fertigation systems. Unlike solid humates that require pre-dissolution, this liquid formulation can be injected directly into drip lines, center pivots, and foliar spray tanks without clogging or sediment issues. The balanced humic-fulvic acid profile provides dual action: humic fractions condition the root zone soil while fulvic fractions penetrate leaf cuticles for direct cellular nutrition. Widely adopted in Dutch greenhouse operations, Spanish drip-irrigated horticulture, Israeli desert agriculture, and Australian broadacre agriculture.
How Liquid Humic Acid Works
The liquid formulation delivers dissolved humic and fulvic acids directly to the root zone through irrigation water. In soil, humic acids bind to clay particles and organic matter, increasing CEC and nutrient retention capacity. Simultaneously, fulvic acids — small enough to pass through root cell membranes — act as natural chelators, escorting micronutrients (Fe, Zn, Mn, Cu) across root barriers into the xylem for upward transport. When applied as a foliar spray, fulvic acids penetrate the leaf cuticle within 4-6 hours, delivering chelated nutrients directly to mesophyll cells.
Key Benefits
Application Guide
Fertigation: inject 2-5 L/ha per irrigation cycle through drip, sprinkler, or pivot systems. Foliar spray: dilute 3-5 mL/L and apply at 200-400 L/ha spray volume. Soil drench: apply 10-20 L/ha in 500-1000L water. Seed priming: soak seeds in 5 mL/L solution for 4-8 hours before planting. Compatible with most fertilizer solutions, pesticides, and biological products. Avoid mixing with concentrated acids (pH <3) or calcium-based products at high concentration.
Ideal For
Storage & Handling
Store in original sealed containers in a cool area (5-35°C). Protect from freezing — if frozen, thaw slowly and agitate before use. Shake well before use if stored for extended periods. Shelf life: 24 months. Non-hazardous for transport. Rinse spray equipment with clean water after use.
Why Choose Dongkwang Poland?
Our liquid humic acid is produced using a controlled alkaline extraction process that maximizes humic substance solubility while preserving fulvic acid fractions that cheaper caustic extraction methods destroy. The result is a clear, stable solution with consistent 12%+ humic acid content that won’t settle, gel, or clog your irrigation equipment even after months of storage.




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