Copper Sulphate Fertilizer Grade
Description
Copper sulphate is used as a micronutrient fertilizer.
Copper sulphate fertilizer grade is a form of copper (II) sulphate pentahydrate used in agriculture to correct copper deficiencies in soil and as a fungicide.
Key Specifications
Fertilizer grade copper sulphate typically adheres to specific standards to ensure efficacy and safety for agricultural use. The Food and Agriculture Organization (FAO) and various suppliers outline the following general specifications
Fertilizer grade copper sulphate typically adheres to specific standards to ensure efficacy and safety for agricultural use. The Food and Agriculture Organization (FAO) and various suppliers outline the following general specifications
| Parameter | Specification | |
|---|---|---|
| Form | Free flowing powder or granular/crystal | |
| Copper (Cu) Content | Minimum 24% – 25.2% by weight | |
| Purity (as CuSO₄·5H₂O) | Minimum 98% | |
| Matter Insoluble in Water | Maximum 0.05% – 1% | |
| Lead (Pb) Content | Maximum 10 ppm (0.001%) – 15 ppm (0.0015%) | |
| Arsenic (As) Content | Maximum 4 ppm (0.0004%) – 15 ppm (0.0015%) | |
| Free Sulfuric Acid | Maximum 0.25% |
Uses in Agriculture
Copper sulphate is a versatile compound in agriculture, primarily used to address soil deficiencies and manage plant diseases.
- Correcting Copper Deficiency: It is applied to the soil or as a foliar spray to provide copper, an essential micronutrient for crops.
- Fungicide: It is a key ingredient in the preparation of Bordeaux mixture (a blend of copper sulphate and quick lime), a widely used fungicide to control issues like mildew, leaf spot, and blight on fruit trees and vegetables.
- Enhancing Plant Health: Adequate copper levels promote the formation of reproductive organs, increase pollen viability, and improve overall crop quality and yield potential.
