Organic Humic Acid Granular Fertilizer 40-70% Reduces Soil Acidification Rice Paddy Farming
Huayuan organic humic acid granular fertiliser is produced through a purely physical process that preserves the natural active groups of weathered coal. Because no chemical reagent is used during production, the finished granules are a genuinely organic soil amendment. The product is engineered to reduce soil acidification, a widespread problem in intensively farmed rice paddies across the Philippines and Southeast Asia where prolonged NPK fertiliser use lowers soil pH over time.
Key Features
- Reduces Soil Acidification: regular application raises buffering capacity and helps reverse the pH decline caused by years of chemical fertiliser use in paddy soils.
- Purely Organic Source: free from chemical additives, the unactivated humic granules meet the strictest organic farming expectations and support eco-friendly certification.
- Rice Paddy Optimised: the 2-4 mm granules settle and integrate well with flooded paddy conditions, slowly releasing organic matter through the full growth cycle.
- Enhanced Microbial Activity: humic acid supplies carbon that stimulates beneficial soil microbes, accelerating straw decomposition and nutrient cycling between seasons.
- Improved Nutrient Retention: by increasing CEC, the granules keep ammonium and potassium in the root zone instead of being washed away by flood irrigation.
Technical Specifications
| Parameter |
Specification |
| Appearance |
Black granular |
| Humic Acid Content |
40%-70% (dry basis) |
| Organic Matter |
Min 85% |
| pH |
4-6 |
| Particle Size |
2-4mm |
| Moisture |
25-30% |
| Solubility |
Insoluble in water |
| CAS No. |
1415-93-6 |
Applications
Broadcast 300-600 kg per hectare before transplanting or direct seeding of rice, then incorporate into the puddled soil. For vegetable rotations such as leafy greens and tomatoes, apply 450-900 kg per hectare in furrows. Combine with microbial or bacterial fertiliser to further enhance decomposition and fertiliser efficiency. Avoid exceeding 2250 kg per hectare per season to prevent temporary soil oxygen deficiency.
Packaging & Quality Assurance
Supplied in 25 kg woven polypropylene bags, 1 ton jumbo bags, or customer-designated packaging. Every production batch is ISO 9001 certified and shipped with a certificate of analysis. We maintain a supply capacity of 50 tons per day and accept flexible L/C or T/T payment terms to support B2B importers, distributors and plantation buyers across Southeast Asia and the Middle East.