Why Onion Needs Zinc
Zinc is an essential nutrient for Onion growth and development. Zinc is the most deficient micronutrient in Indian soils. Over 50% of Indian farmland is zinc deficient.
In India, Zinc Deficiency is particularly common in Onion grown in Maharashtra, Karnataka, Gujarat due to specific soil conditions in these regions.
Visual Symptoms of Zinc Deficiency in Onion
🔍 What to look for in your Onion field:
Soil Causes of Zinc Deficiency in Onion
Zinc Deficiency in Onion is commonly caused by: pH > 7.5, waterlogged soils, calcareous soils
A soil test is the most reliable way to confirm Zinc deficiency. Use SoilPro's NPK Calculator to get fertilizer recommendations based on your soil test values.
How to Correct Zinc Deficiency in Onion
| Product | Application Method | Dose | Timing |
|---|---|---|---|
| Zinc Sulphate 33% (5-10 kg/acre) | Soil | 5-10 kg/acre | Vegetative stage |
| ZnEDTA foliar spray (0.5%) | Foliar spray | 0.5% | Vegetative stage |
| Zinc Oxide WP foliar | Foliar spray | As per label | Vegetative stage |
Frequently Asked Questions
What are the symptoms of Zinc Deficiency in Onion?
yellowing between veins (interveinal chlorosis), small leaves, shortened internodes, poor grain fill
How quickly can I fix Zinc Deficiency in Onion?
Foliar sprays show improvement in 7-10 days. Soil applications take 2-3 weeks. Severe deficiency may need 2-3 foliar sprays at weekly intervals.
Does Zinc Deficiency affect Onion yield?
Yes significantly. Zinc deficiency reduces Onion yield by 20-50% depending on severity. It also reduces fruit/grain quality.
Which soil test should I do for Onion?
Test for pH, EC, N, P, K, Zn, Fe, Mn, B, and organic carbon. SoilPro can interpret any soil test report and give crop-specific recommendations.