Magnesium sulfate micro powder

Chinese Name: Zinc Sulfate Heptahydrate

Synonyms: White Vitriol, Zinc Vitriol, Zinc Sulfate, Zinc Sulfate Heptahydrate

English Name: Zinc sulfate heptahydrate; Zinc vitriol; White vitriol

Molecular Formula: ZnSO₄·7H₂O

Molecular Weight: 287.56

Specific Gravity: 1.957

CAS No.: 7446-20-0

National Standard: HG/T 2326-2005

Physical Properties: Relative density 1.957, melting point 1000°C.Freely soluble in water (96.5 g/100 mL at 20°C; 663.6 g/100 mL at 100°C), slightly soluble in ethanol and glycerol.

Crops sensitive to zinc deficiency include:corn, rice, sugar beet, soybean, kidney bean, citrus, pear, peach, tomato, etc. Among them, corn and rice are the most sensitive.Application of zinc fertilizer has a significant effect on preventing and controlling zinc-deficiency “white stripe disease” in corn and little leaf disease in fruit trees.

Application Methods:

• Foliar spray: Dilute with water at 1:1000–1:1500, spray evenly on leaves, apply 2–3 times at 10–15 day intervals.

• Base fertilizer or topdressing: Apply 500–1000 g per mu, mixed evenly with fine soil or farmyard manure.

• Seed dressing: Use 2–3 g of this product per kilogram of seeds, dissolve in a small amount of water and mix evenly with seeds.

• Seed soaking: Soak seeds for 8–12 hours in a 0.02–0.05% solution (diluted 2000–5000 times), air-dry before sowing.