Zinc Lignosulfonate is a high-performance, fully water-soluble organic zinc chelate derived from natural lignin. Formulated specifically for advanced agriculture and agronomy, it effectively prevents and corrects zinc deficiencies (such as “little leaf” and interveinal chlorosis) while simultaneously enhancing soil structure through the addition of valuable organic carbon.
- Product Name: Zinc Lignosulfonate
- Product Type: Organic Trace Element Fertilizer / Chelating Agent
1. Primary Applications & Usage
Zinc Lignosulfonate is highly versatile, biologically active, and compatible with modern agricultural practices:
- Foliar Spray: Allows for rapid leaf absorption to provide immediate, targeted relief from acute zinc deficiency symptoms (e.g., interveinal chlorosis, stunted growth).
- Fertigation: Thanks to its exceptionally low water-insoluble matter (max 0.1%), it dissolves completely and is perfect for drip irrigation and center pivot systems without clogging equipment.
- Soil Application: Can be applied directly to the soil or blended with other granular NPK fertilizers to provide a sustained, long-term release of essential zinc.
- Seed Treatment: Used in specialized seed coatings to support early seedling vigor, root development, and better germination rates.
2. Physical and Chemical Specifications
| Parameter | Standard Requirement |
| Lignosulfonate (dry basis) | ≥ 50% |
| Zinc (Zn) | ≥ 10% |
| Total Nutrients (N+P2O5+K2O) | ≥ 12% |
| Organic Matter | ≥ 30% |
| Sulfur (S) | ≥ 7% |
| pH (1% water solution) | 4.5 – 5.5 |
| Moisture | ≤ 3.0% |
| Water Insoluble Matter | ≤ 0.1% |
| Medium Elements (Ca+Mg) | ≥ 1.5% |
3. Heavy Metal Profile
| Element | Limit (mg/kg) |
| Mercury (Hg) | ≤ 0.1 |
| Arsenic (As) | ≤ 1.0 |
| Cadmium (Cd) | ≤ 0.5 |
| Lead (Pb) | ≤ 1.0 |
| Chromium (Cr) | ≤ 0.5 |
4. Routine Packaging
- Standard Packaging: Provided in 25 kg PP/PE woven bags featuring an inner plastic liner to ensure maximum protection against moisture during transit.
- Bulk Options: For large-scale agricultural or industrial use, 500 kg or 1000 kg jumbo bags (FIBC) are available.
5. Storage and Handling
- Hygroscopic Property: This product is highly hygroscopic (readily absorbs moisture from the air) and must be stored in a cool, dry, and well-ventilated area.
- Sealing Requirements: Bags must be kept tightly sealed immediately after opening and when not in use.
- Moisture Protection: If the product absorbs ambient moisture, it may clump. However, this physical change typically does not affect its chemical efficacy or nutritional value for plants.