Humic acid is extracted from natural weathered coal, and it is a permanent humic substance and cannot be degraded that fast by the microorganism in the soil. It is a natural additive for fertilizer to improve the structure of the soil and increase the fertility.
Applications:
1. Improve the structure of soil; increase the buffering power of soil.
2. Neutralize both acidic and alkaline soil; regulate the pH-value of the soil.
3. Stimulate plant growth, increase the yield and quality.
4. Reduce nitrate leaking into groundwater and protect the underground water.
Specifications:
Usage & dosage:
Base Fertilizer: 750-1500kgs/ha for each season
Field Crop: 50-100kgs/ha per crop season
Fruit Tree: 1-2kgs per plant
Vegetables: 1-2kgs/m2
Mix Agent: 30-60kgs/ton