zinc sulphate application as fertilizers By:Lina
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- 、Saskia
- Issue Time
- Jun 5,2025
Summary
Zinc sulfate (ZnSO₄) is a common source of zinc used in agriculture as a micronutrient fertilizer. Zinc is essential for plant growth because it plays a crucial role in various biochemical processes, including enzyme activation, protein synthesis, and chlorophyll production. When plants suffer from zinc deficiency, they can exhibit symptoms like yellowing of leaves (chlorosis), stunted growth, and poor fruit development.
Here’s how zinc sulfate is applied as a fertilizer:
Zinc sulfate (ZnSO₄) is a common source of zinc used in agriculture as a micronutrient fertilizer. Zinc is essential for plant growth because it plays a crucial role in various biochemical processes, including enzyme activation, protein synthesis, and chlorophyll production. When plants suffer from zinc deficiency, they can exhibit symptoms like yellowing of leaves (chlorosis), stunted growth, and poor fruit development.
1. Soil Application
Broadcasting: Zinc sulfate can be spread directly on the soil surface and incorporated into the soil through plowing or tilling. This helps ensure that zinc is available to the plant roots.
Soil incorporation: When applying zinc sulfate to the soil, it’s often mixed with other fertilizers to provide a balanced nutrient supply. This can be done before planting or during early stages of crop growth.
Rate of application: The typical application rate ranges from 5 to 10 kg/ha, depending on the soil's zinc levels and the crop’s needs.
2. Foliar Spray
Spraying on leaves: Zinc sulfate can be dissolved in water and sprayed directly onto the leaves of plants. This method allows for quick uptake by plants, especially when they are showing signs of zinc deficiency.
Application concentration: A common foliar spray solution might contain around 0.1% to 0.5% zinc sulfate. For example, 100-500 grams of zinc sulfate dissolved in 100 liters of water.
Timing: Foliar applications are most effective when plants are actively growing, especially during periods when soil zinc availability is low or when symptoms of deficiency appear.
3. Seed Treatment
Zinc sulfate can also be used as a seed treatment, especially for crops that are prone to zinc deficiency. A dilute solution is applied to seeds before planting, providing a zinc boost to the seedlings once they germinate.
4. In Fertigation Systems
For crops grown in irrigated fields or in hydroponic systems, zinc sulfate can be dissolved in the irrigation water and applied through fertigation. This ensures an even distribution of zinc to plants over time.
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