Why Onion Needs Potassium
Potassium is an essential nutrient for Onion growth and development. Potassium improves fruit quality, disease resistance, and water use efficiency.
In India, Potassium Deficiency is particularly common in Onion grown in Maharashtra, Karnataka, Gujarat due to specific soil conditions in these regions.
Visual Symptoms of Potassium Deficiency in Onion
🔍 What to look for in your Onion field:
Soil Causes of Potassium Deficiency in Onion
Potassium Deficiency in Onion is commonly caused by: Sandy soils, high rainfall areas, soils with low CEC
A soil test is the most reliable way to confirm Potassium deficiency. Use SoilPro's NPK Calculator to get fertilizer recommendations based on your soil test values.
How to Correct Potassium Deficiency in Onion
| Product | Application Method | Dose | Timing |
|---|---|---|---|
| MOP 60% K2O (50 kg/acre) | Soil | 50 kg/acre | Vegetative stage |
| SOP 50% K2O (50 kg/acre) | Soil | 50 kg/acre | Vegetative stage |
| Potassium Nitrate 13-0-45 (foliar) | Foliar spray | foliar | Vegetative stage |
Frequently Asked Questions
What are the symptoms of Potassium Deficiency in Onion?
scorching of leaf margins starting from older leaves, weak stems, poor drought resistance, bland tasting fruit
How quickly can I fix Potassium 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 Potassium Deficiency affect Onion yield?
Yes significantly. Potassium 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.