Black Humic Acid Granules 4-6mm Slow Release Organic Fertilizer for Paddy Rice Fields

Flooded paddy soil is an anaerobic, reducing environment, and ordinary organic matter breaks down within weeks. These 4 to 6 mm granules are pressed harder and are designed to hold shape in standing water, releasing the humic fraction slowly across 60 to 90 days, which matches one rice crop cycle in the Mekong Delta, the Chao Phraya basin and Central Java. The practical benefit for a rice buyer is nitrogen economy. When the granules are blended with urea prills at 5 to 10