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Zinc Deficiency in Maize: Identification and Solutions
Zinc is an essential micronutrient for maize growth. It plays a crucial role in enzyme activation, protein synthesis, and hormone regulation. Even a small deficiency can severely impact plant development and final yield.

Symptoms of Zinc Deficiency in Maize:

1. Stunted Growth – Plants show reduced height and shortened internodes.

2. Chlorosis – Yellowing appears between the veins of young leaves (interveinal chlorosis).

3. White Bands – Broad white to pale bands may appear on both sides of the midrib of young leaves.

4. Delayed Maturity – Crop takes longer to reach flowering and grain-filling stages.

5. Poor Root Development – Weak root system reduces nutrient uptake further.

Causes:

• High soil pH (alkaline soils)

• Sandy or calcareous soils low in organic matter

• Continuous use of high phosphorus fertilizers without zinc

• Waterlogged conditions or compacted soils

Management Practices:

• Apply Zinc Fertilizers: Use zinc sulfate (ZnSO₄) at 10–25 kg/ha as basal or foliar spray (0.5% ZnSO₄) during early stages.

• Balanced Nutrition: Avoid overuse of phosphorus as it can lock zinc. Maintain overall soil nutrient balance.

• Organic Matter: Incorporate compost or farmyard manure to improve zinc availability.

• Seed Treatment: Treat seeds with zinc-containing products for early protection.

Zinc deficiency is manageable when detected early. A timely intervention not only improves crop health but also boosts maize yield and grain quality.