High-purity crystalline magnesium sulfate heptahydrate (Mg≥9.8%, S≥13%) delivers readily available magnesium and sulfur for optimal plant growth and yield improvement. Certified to ISO 9001 standards for quality assurance.

I. Scientific Benefits

• Chlorophyll Synthesis
  Activates over 300 enzymes and significantly enhances chlorophyll production
• Nutrient Mobility
  Highly soluble formulation ensures rapid magnesium and sulfur uptake
• Stress Resistance
  Improves crop tolerance to drought, heat, and other environmental stresses
• Quality Enhancement
  Increases sugar content in fruits and oil content in oilseed crops

II. Application Guidelines
Field Crops

• Soil application: 15-25 kg/ha for magnesium-deficient soils
• Foliar spray: 1-2% solution during critical growth stages
  Specialty Crops
• 10-20 kg/ha for high-value crops including vegetables and fruits
• Hydroponic systems: 50-100 ppm magnesium concentration
  Soil Correction
• 200-400 kg/ha for severe magnesium deficiency conditions

III. Technical Specifications

• Chemical Composition
  Magnesium: 9.8% minimum, Sulfur: 13% minimum
  Heavy metals: Cadmium ≤1 ppm, Lead ≤5 ppm
• Physical Properties
  Crystal size: 0.2-2.0 mm, Bulk density: 1000-1100 kg/m³
  Solubility: 710 g/L at 20°C
• Quality Standards
  Moisture content: ≤0.5%, Insoluble matter: ≤0.05%

IV. Performance Advantages

• Rapid Correction
  Visible improvement in magnesium deficiency symptoms within 5-7 days
• Yield Improvement
  15-30% yield increase in various crop types
• Quality Enhancement
  2-3° Brix increase in fruit crops and improved grain quality
• Environmental Safety
  Completely biodegradable and environmentally friendly

V. Competitive Strengths

• High Solubility
  Excellent dissolution characteristics for various application methods
• Crop Safety
  Minimal risk of leaf burn or root damage when properly applied
• Storage Stability
  Maintains physical and chemical properties under proper storage conditions
• Cost Effectiveness
  Superior value compared to other magnesium sources

Quality Assurance
Our magnesium sulfate heptahydrate undergoes rigorous quality control testing to ensure consistent nutrient content and physical characteristics. All products meet international agricultural standards.