Anthracnose/Twister Disease (Colletotrichum gleosporiodes) in Onion and Garlic

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Anthracnose/Twister Disease (Colletotrichum gleosporiodes):

            

Symptoms: The characteristic symptoms are curling, twisting, chlorosis of the leaves, and abnormal elongation of neck (false stem). Initially pale yellow water soaked oval sunken lesions appears on leaf blades. Numerous black coloured slightly raised structures are produced in the central portion, which may be arranged in concentric rings.  The affected leaves shrivel, droop down and finally wither.

Management:  Application of benomyl @ 0.2% as soil treatment is recommended. Spraying of mancozeb @ 0.25% also gives good control of disease.

 

Source: Directorate of Onion and Garlic Research, Nasik

 

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