Onion
Irrigation practices for onion, a bulb vegetable crop.
Season water
350-500 mm
Soil moisture target
60–75%
Recommended irrigation schedule
Adjust slightly based on soil type, local climate, and field observations.
Planting
Immediate irrigation after planting
Establishment
Every 3-4 days
Vegetative Growth
Every 4-6 days
Bulb Formation
Every 3-5 days
Maturity
Stop irrigation 2-3 weeks before harvest
Best practices in the field
- Use drip irrigation for water efficiency
- Maintain consistent moisture during bulb formation
- Critical irrigation during vegetative growth and bulb formation
- Stop irrigation 2-3 weeks before harvest for proper curing
- Water in early morning
- Monitor soil moisture at 20-30 cm depth
- Avoid water stress during bulb formation
- Ensure good drainage to prevent bulb rot
Common mistakes to avoid
- Water stress during bulb formation causing small bulbs
- Over-irrigation leading to bulb rot and diseases
- Irrigation too close to harvest affecting storage quality
- Irregular watering causing split bulbs
- Poor drainage causing root and bulb problems
- Insufficient water during vegetative growth