Non-Chemical Management
- Plant disease-free materials.
- Rotate crops. Do not plant onions and related species in the same locations each year.
- Do not overwater. Wet conditions favor disease, particularly prior to harvest.
- Do not overfertilize. Excess nitrogen results in delayed maturing of plants and greater susceptibility to disease.
- Allow tops to mature before harvest.
- Cure bulbs 6-10 days prior to storage.
- Minimize bruising and injury during harvest.
- Store bulbs in cool, dry, well-ventilated locations.
- Remove diseased plants. Do not compost diseased materials.
Select non-chemical management options as your first choice!