Why Is Zinc Sulphate a Key Micronutrient in Agriculture and Industry?

Technical Introduction

Zinc sulphate (ZnSO₄) is an inorganic compound used widely as a source of zinc for plants, animals, and industrial applications.
It is available in several hydration forms — heptahydrate (ZnSO₄·7H₂O), monohydrate (ZnSO₄·H₂O), and anhydrous (ZnSO₄) — with monohydrate offering higher zinc content than heptahydrate.
Zinc is an essential micronutrient involved in enzyme activation, protein synthesis, and chlorophyll production in plants.
Industrial-grade zinc sulphate is used in manufacturing, water treatment, and electroplating.

Applications

1. Agriculture & Horticulture

• Micronutrient Fertilizer: Corrects zinc deficiencies in soil and crops.

• Foliar Spray: Improves flowering, fruit set, and yield quality.

• Seed Treatment: Enhances germination and early growth.

2. Animal Feed

• Feed Additive: Supplies essential zinc to prevent growth retardation and skin problems.

3. Industrial Uses

• Electroplating: Acts as an electrolyte in zinc plating.

• Coagulation Aid: Used in water treatment processes.

• Pigment Production: Ingredient in lithopone and other pigments.

Advantages

• High Zinc Content: Especially in monohydrate form (~35% Zn).

• Fast Solubility: Quickly dissolves for rapid uptake in plants.

• Versatile Formulation: Compatible with foliar, soil, and fertigation applications.

• Multi-Industry Utility: Works in agriculture, feed, and industrial processes.

Typical Parameters(Agricultural Grade)

FAQs

Q1: Which form is better for agriculture — monohydrate or heptahydrate?
A1: Monohydrate has higher zinc content and is more cost-efficient, but heptahydrate is sometimes preferred for easier handling and faster dissolution.

Q2: Can zinc sulphate be mixed with other fertilizers?
A2: Yes, but avoid mixing with phosphates in solution form to prevent precipitation.

Q3: Is zinc sulphate safe for animal feed?
A3: Yes, when dosed properly; excessive intake can be harmful.

Q4: Does it work in hydroponics?
A4: Yes, but dosing must be precise to avoid toxicity.

Q5: How soon does it correct zinc deficiency in crops?
A5: Foliar applications can show improvement within days, while soil applications may take longer.