High-purity zinc sulfate heptahydrate (Zn≥22.5%, S≥11%) provides readily available zinc and sulfur to correct deficiencies and improve crop performance. Certified to ISO 9001 standards for quality assurance.

I. Scientific Benefits

• Enzyme Activation
  Essential component of over 300 enzymes involved in growth regulation
• Chlorophyll Production
  Critical for chlorophyll synthesis and carbohydrate formation
• Auxin Metabolism
  Regulates plant growth hormone production and development
• Stress Resistance
  Enhances drought and disease tolerance in various crops

II. Application Guidelines
Soil Application

• 10-15 kg/ha for zinc-deficient soils before planting
• 5-10 kg/ha as side dressing for annual crops
  Foliar Application
• 0.5-1.0% solution spray at critical growth stages
• 2-3 applications at 10-15 day intervals for severe deficiency
  Seed Treatment
• 0.2-0.5% solution for seed coating before planting

III. Technical Specifications

• Chemical Composition
  Zinc: 22.5% minimum, Sulfur: 11% minimum
  Heavy metals: Cadmium ≤2 ppm, Lead ≤5 ppm
• Physical Properties
  White crystalline powder, Bulk density: 1000-1100 kg/m³
  Solubility: 660 g/L at 20°C
• Quality Standards
  Moisture content: ≤0.5%, Insoluble matter: ≤0.05%

IV. Performance Benefits

• Deficiency Correction
  Visible improvement within 7-10 days of application
• Yield Improvement
  15-25% yield increase in zinc-responsive crops
• Quality Enhancement
  Improves crop quality and nutritional value
• Economic Returns
  High benefit-cost ratio in zinc-deficient soils

V. Competitive Advantages

• High Solubility
  Excellent dissolution characteristics for various application methods
• Crop Safety
  Low risk of phytotoxicity when used as recommended
• Storage Stability
  Maintains chemical stability under proper storage conditions
• Cost Effectiveness
  Economical solution for zinc supplementation

Quality Assurance
Our zinc sulfate heptahydrate undergoes strict quality control to ensure consistent nutrient content and physical properties. All products meet international agricultural standards.

Ordering Information
Contact our technical team for customized recommendations based on your specific crop requirements and soil conditions. Bulk quantities available with competitive pricing.