Why Onion Needs Boron
Boron is an essential nutrient for Onion growth and development. Boron deficiency commonly causes poor fruit set and hollow stem. Critical for calcium metabolism.
In India, Boron Deficiency is particularly common in Onion grown in Maharashtra, Karnataka, Gujarat due to specific soil conditions in these regions.
Visual Symptoms of Boron Deficiency in Onion
🔍 What to look for in your Onion field:
Soil Causes of Boron Deficiency in Onion
Boron Deficiency in Onion is commonly caused by: Sandy soils, acid leached soils, drought conditions
A soil test is the most reliable way to confirm Boron deficiency. Use SoilPro's NPK Calculator to get fertilizer recommendations based on your soil test values.
How to Correct Boron Deficiency in Onion
| Product | Application Method | Dose | Timing |
|---|---|---|---|
| Borax soil application (2 kg/acre) | Soil | 2 kg/acre | Pre-sowing |
| Solubor foliar (0.1-0.2%) | Foliar spray | 0.1-0.2% | Vegetative stage |
| Boric Acid foliar | Foliar spray | As per label | Vegetative stage |
Frequently Asked Questions
What are the symptoms of Boron Deficiency in Onion?
hollow heart in vegetables, distorted growing tips, poor fruit set, cracked stems
How quickly can I fix Boron 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 Boron Deficiency affect Onion yield?
Yes significantly. Boron 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.