Onion yellow dwarf: Bending of leaves
Pathogen: Poty virus
Symptoms
The affected leaves and stems change their normal green colour to various degrees of yellow and leaves tend to flatten and crinkle and as a result bend over.
Disease development
The virus is carried by infected seed bulbs, onion sets and volunteer onions. Many aphid species can transmit this virus from infected to healthy plants.
Disease management
Diseased plants should be removed and burnt. Spary malathion (0.1%) or metasytox (0.1%). Healthy bulbs should be used for seed production.
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