Why Is Humic Acid Sodium Salt a Key Solution for Soil Fertility and Crop Performance?
Technical Introduction
Humic acid sodium salt is a highly water-soluble form of humic substances obtained from natural lignite, leonardite, or peat through alkaline extraction.
It contains sodium humate, rich in humic acid functional groups that improve soil structure, increase nutrient availability, and stimulate plant physiological activity.
Due to its high solubility, it is widely used in irrigation systems, foliar applications, and soil amendments for modern agriculture.
Applications
1. Soil Improvement
Enhances cation exchange capacity (CEC), improving nutrient holding and buffering ability.
Promotes aggregation of soil particles, improving aeration and water retention.
2. Nutrient Management
Chelates micronutrients (Fe, Zn, Mn, Cu) to prevent deficiencies.
Reduces nutrient leaching in sandy soils and releases bound nutrients in clay soils.
3. Plant Growth Stimulation
Enhances root development and enzymatic activity.
Increases chlorophyll production for improved photosynthesis.
4. Stress Resistance
Helps plants withstand drought, salinity, and temperature fluctuations.
5. Livestock & Aquaculture
Used as a feed additive in certain animal husbandry practices to improve digestion and immunity.
Advantages
High Solubility: Easy to dissolve for foliar spraying and fertigation.
Eco-Friendly: 100% natural and biodegradable.
Versatile Use: Compatible with fertilizers, pesticides, and irrigation systems.
Improves Soil Health: Long-term soil structure and microbial benefits.
Cost-Effective: Reduces fertilizer waste by increasing nutrient efficiency.
Typical Parameters
| Property | Value |
|---|---|
| Source | Leonardite / lignite / peat |
| Humic Acid Content | ≥ 50% (dry basis) |
| Sodium Oxide (Na₂O) | 8–12% |
| Solubility | 100% in water |
| pH (1% solution) | 9.0 – 11.0 |
| Appearance | Black-brown powder or flakes |
| Moisture | ≤ 10% |
| Shelf Life | 2 years |
FAQs
Q1: How is humic acid sodium salt different from potassium humate?
A1: Both are water-soluble humic acid salts, but potassium humate supplies potassium, while sodium humate is mainly used for soil structure improvement, chelation, and animal feed applications.
Q2: Can it be used in drip irrigation?
A2: Yes, it dissolves completely without clogging systems.
Q3: Is it safe for organic farming?
A3: Yes, provided it meets local organic certification standards.
Q4: Can it be applied with chemical fertilizers?
A4: Yes, it improves nutrient uptake and reduces losses.
Q5: Does sodium content harm plants?
A5: At recommended doses, it is safe. Overuse should be avoided in saline soils.
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