JINGFENGR®’s  Insoluble Humic Acid Granules are made from high-purity natural weathered coal/lignite via disc granulation, curing, and precision sieving.

Featuring a stable 2-5mm particle size and excellent flowability, this product addresses key pain points of traditional humic acid powder (dust pollution, difficult mechanized application, high transportation loss).

Tailored for large-scale agricultural production, it delivers long-lasting soil improvement while retaining humic acid’s core soil amendment properties, with enhanced convenience and compatibility.

OEM service:

• Microorganism Coated.
• Low Moisture High Hardness Humic acid round balls / prills.

📑JINGFENG Humic acid CERES Organic Certificate(Confirmation for Materials Used in Organic Agriculture)
📑REACH (Green chemical innovation, permitted in the EU)
📑ISO Certificate 9001 / ISO14001 / ISO22000
📑Heavy Metal Test Report from ISO certified lab

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📑 MSDS (Insoluble Humic Acid Granule Material Safety Data Sheet)
📑 TDS (Insoluble Humic Acid Granule Technical Data Sheet)

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▶️Case 1: Saline-Alkaline Soil Remediation for Rice Cultivation (Inner Mongolia, China)

• Background: The demonstration site in Horqin Left Rear Banner suffered from severe soil salinization (pH 8.5-9.0), low organic matter content (<1.5%), and poor water retention. Traditional planting yielded only 302.68 kg per mu with frequent crop failure.
• Application Details: Applied our Water-Insoluble Humic Acid Granules as base fertilizer at three dosages (150 kg/mu, 200 kg/mu, 250 kg/mu). Mechanically broadcast and incorporated into 20-30 cm soil before rice transplanting, without additional soil amendments.
• Results:
  • Yield increased significantly: The highest yield reached 659.85 kg/mu (150 kg/mu dosage), achieving a 118% yield increase compared to the control group without the product .
  • Soil quality improved: Soil pH decreased to 7.2-7.5, organic matter content increased to 2.8%, and water-stable aggregates (>0.25mm) increased by 42%.
  • Sustainable effect: The granular product degraded slowly, maintaining soil improvement effects for 2 consecutive planting seasons with no salinization rebound .

▶️Case 2: Apple Orchard Soil Improvement (Shandong, China)

• Background: A 10-year-old apple orchard faced soil compaction, nutrient imbalance, and declining fruit quality (low sugar content, uneven coloring) due to long-term chemical fertilizer use.
• Application Details: Applied 0.8 kg per tree via furrow application (30 cm away from roots) in autumn. Mixed with organic fertilizer at a 10% ratio, then covered with soil after application.
• Results:
  • Fruit quality enhanced: Soluble solid content increased by 18%, fruit coloring uniformity reached over 90%, and storage resistance improved by 30%.
  • Soil structure optimized: Soil bulk density decreased from 1.45 g/cm³ to 1.12 g/cm³, and root system biomass increased by 25% in the 0-40 cm soil layer.
  • Fertilizer efficiency improved: Reduced chemical fertilizer usage by 20% while maintaining yield, lowering production costs by $120 per acre.

▶️Case 3: Large-Scale Corn Cultivation (Heilongjiang, China)

• Background: 500-acre corn field with sandy loam soil, poor water and nutrient retention, and high fertilizer leaching loss. Mechanical planting required efficient, dust-free soil amendments.
• Application Details: Applied 1200 kg/ha via mechanical broadcasting before sowing, integrated with compound fertilizer application. No additional manual operation needed.
• Results:
  • Yield increased by 15.8% compared to the powder humic acid group, reaching 8.2 tons/ha.
  • Labor and logistics cost saved: Mechanization compatibility reduced application time by 60%, and transportation loss was only 0.8% (vs. 6.5% for powder products).
  • Drought resistance enhanced: The field maintained normal growth during a 20-day drought period, with leaf wilting rate 50% lower than the control group.

💬Q1: What is the difference between water-insoluble and water-soluble humic acid granules?

✅Water-insoluble granules release humic acid slowly through microbial degradation, providing long-term (3-6 months) soil improvement effects . They are ideal for base application and mechanized use. Water-soluble types act quickly but have a short residual period (1-2 months), suitable for fertigation or foliar application. Our water-insoluble granules also eliminate dust pollution and reduce transportation loss.

💬Q2: Why choose water-insoluble humic acid if it doesn’t dissolve in water?

✅Its water-insoluble nature ensures slow, sustained release in soil, avoiding nutrient leaching . It forms stable bonds with soil particles to promote aggregate structure formation, which is more effective for long-term soil remediation (e.g., saline-alkaline or compacted soils). The granular form also enhances mechanization compatibility and storage stability.

💬Q3: Which soil types are most suitable for this product?

✅It works best for saline-alkaline soil (pH 7.5-9.5), compacted soil, sandy soil with poor water retention, and degraded soil with low organic matter content (<2%) . It is also suitable for soil with long-term chemical fertilizer use to restore soil health.

💬Q4: Can it be mixed with other fertilizers or pesticides?

✅Not recommended for blending with other fertilizers due to higher moisture (≤25%), which may cause caking. Compatible with organic fertilizers for standalone base application; avoid strong acidic fertilizers (pH <3) or copper-based pesticides.

💬Q5: How to adjust the application rate for different crops?

✅For field crops (corn, wheat): 800-1200 kg/ha; for fruit trees: 0.5-1 kg per tree; for vegetables: 100-150 kg/mu; for saline-alkaline soil remediation: 1000-1500 kg/ha . Adjust based on soil degradation degree and crop nutrient requirements—increase dosage by 20% for severely degraded soil.

💬Q6: Is this product suitable for organic farming?

✅ Yes, it is derived from natural leonardite and certified compliant with USDA Organic, EU 2019/1009, and OMRI standards . It contains no synthetic additives, making it ideal for organic crop production.

💬Q7: How long does it take to see visible results?

✅Soil structure improvement (e.g., reduced compaction) can be observed after 1 planting season. Significant yield increases and quality improvement (e.g., higher sugar content) typically appear after 2-3 consecutive applications . For saline-alkaline soil, pH reduction and yield improvement can be achieved in the first year.

💬Q8: What are the storage requirements?

✅Store in a dry, ventilated warehouse with relative humidity <60% and temperature <30°C . Avoid rain, moisture, and heavy pressure to prevent caking or particle crushing. The shelf life is 24 months in original packaging.

💬Q9: Will over-application cause negative effects?

✅Excessive application (more than twice the recommended dosage) may reduce soil bulk density excessively, affecting water retention . Follow the recommended rate for optimal results—our product has no heavy metal residues (Pb ≤50 mg/kg, Cd ≤10 mg/kg) and is safe for soil and crops.

💬Q10: Does it cause root burn?

✅No, high-purity natural humic acid has excellent biocompatibility . When applied as directed (30 cm away from roots for hole/furrow application), it stimulates root growth rather than causing burn. Avoid direct contact with young roots for newly transplanted seedlings.