Onion Leaf Rot and Leaf Blight
Botrytis spp. / Stemphylium spp.
Onionfungal
A fungal disease causing water-soaked lesions and tip dieback on onion leaves.
Symptoms
Water-soaked lesions that turn gray-brown, with leaf tip dieback in humid weather.
Favorable conditions
- •High humidity and leaf wetness
- •Dense plantings with poor airflow
Management
- 1Rotate fungicides
- 2Avoid overhead irrigation
- 3Rotate crops and remove debris after harvest
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