Zinc Sulphate (21% Zn) is a water-soluble, crystalline agricultural fertilizer used to treat zinc deficiencies in crops. It typically contains 21% zinc and 10% sulphur (heptahydrate form), enhancing plant growth, chlorophyll formation, and photosynthesis. It is applied via soil (5–10 kg/acre) or foliar spray to boost yields in cereals, vegetables, and fruits.

Key Details About Zinc 21% Fertilizer:

Composition: Contains 21% zinc (Zn) and typically 10% sulphur (S) in heptahydrate form, making it a white crystalline fertilizer.

Benefits: Promotes enzyme activation, protein synthesis, root development, and chlorophyll formation, which increases crop yield and quality.

Application Rates:

Soil Application

5–10 kg per acre, often mixed with urea or sand.

Foliar Spray

250 g to 500 g per 200 liters of water.

Suitability

Ideal for a wide range of crops including cereals, pulses, sugarcane, vegetables, and fruits.

Effect of Deficiency

Lack of zinc causes stunted growth and reduced photosynthesis, which this fertilizer helps correct.

It acts as a vital micronutrient that improves the overall health and vigor of the plants.