I. Recommended Application Rates (Per Ton of Finished Product)
Standard Powdered Organic Fertilizer: 5–10 kg/ton (Enhances organic matter content; accelerates maturation)
Premium Organic / Bio-Organic Fertilizer: 15–30 kg/ton (Soil improvement + Root stimulation + Stress resistance)
Organic-Inorganic Compound Fertilizer: 10–20 kg/ton (Chelates medium and trace elements; improves N-P-K utilization efficiency)
Maturation & Fermentation Stage (Chicken manure / Sheep manure / Crop straw): 5–8 kg per ton of raw material; shortens maturation period by 7–10 days; reduces ammonia volatilization; increases organic matter content by 15%.
II. Application Stages & Procedures (Direct Implementation for Production Workshops)
Raw Material Pre-treatment (Recommended)
Sieve the raw powder through an 80–100 mesh screen first to prevent clumping; pre-mix separately with a small amount of organic fertilizer before combining with the bulk materials to ensure more uniform dispersion.
Fermentation & Maturation Stage (Most Effective)
Add to the fermentation trough together with microbial inoculants and straw/manure waste; turn the compost pile 2–3 times. The fulvic acid acts as a carbon source, activating beneficial microbes, lowering temperatures, eliminating odors, and preventing “seedling burn.”
Finished Product Mixing / Granulation (Most Commonly Used)
Powdered Fertilizer: Direct dry mixing for 5–10 minutes, followed by screening and packaging.
Granular Fertilizer: Mix prior to granulation (using disc or extrusion methods). The fulvic acid aids in granule formation, increases granule strength, and reduces the percentage of fine dust/powder.
Note on pH
Mineral-derived potassium fulvate has a pH of 8–11 (alkaline). If the organic fertilizer’s pH is < 6.5, you may add an additional 2–3 kg/ton to help adjust the acidity.
III. Core Benefits (For Manufacturers + For Farmers)
✅ For Manufacturers: Easier to meet organic matter standards; reduced costs for microbial inoculants; faster maturation; superior granulation quality; higher selling prices.
✅ For Farmers: Soil improvement (alleviating compaction, salinity/alkalinity, and acidification); root stimulation; resistance to continuous cropping issues; stable fertilizer efficacy; 10–20% increase in crop yield. IV. Purchasing Criteria for Raw Powder (Avoiding Pitfalls)
Implementation Standard:HG/T 5334-2018
Key Specifications:Mineral-derived fulvic acid ≥ 50%, K₂O ≥ 12%, Moisture ≤ 15%
Appearance:** Black powder; fully water-soluble; free of impurities; non-caking
Avoid:Biochemical fulvic acid (low activity), lignite powder masquerading as the product, or falsely inflated specifications
V. Incompatibilities (Essential for Workshop Staff)
❌ **Do not** mix directly with **strong acidic raw materials (e.g., Superphosphate)**; this leads to precipitation and reduced efficacy.
❌ **Do not overdose:** Adding > 30 kg per ton of fertilizer can result in excessively high pH in the finished product, potentially causing root burn in crops.
❌ **Moisture Protection:** Store in a sealed, dry environment; the product is hygroscopic and prone to caking if exposed to moisture.
VI. Cost and Value Proposition (Reference)
Market Price for Raw Powder: 4,000 – 6,000 RMB per ton
Usage Rate (10 kg/ton): Increases the cost per ton of fertilizer by 40–60 RMB; however, the benefits—including increased organic matter content, reduced need for microbial agents, and a higher potential selling price—make it a cost-effective investment overall.
VII. Labeling Recommendations for Finished Products (Compliance + Market Appeal)
Implementation Standard: NY/T 525-2021 (Organic Fertilizer)
Labeling:Indicate the addition of “Mineral-derived Potassium Fulvate” (Fulvic acid ≥ 50%), and highlight key selling points such as soil improvement, root development, and stress resistance.