Rust of Beans

Uromyces viciae

Uromyces appendiculatus
Uromyces viciae-fabae var. viciae-fabae

Family: Pucciniaceae

Description:

A fungal disease that starts on leaves as pale yellow spots about 1.5 mm diameter. Opposite these spots on the underside of the leaf, small raised reddish brown blisters appear within 2-3 days and release powdery spores. In severe infections the leaf may yellow and fall. On pods, slimy blisters may appear but they don't usually burst and release spores.

Species Affected:

Beans

Biology:

Favoured by temperate, damp weather or heavy dews.
Spread by wind blown spores.

Life Cycle:

Origin and History:

Distribution:

Significance:

Management and Control:

Plant resistant varieties.
Remove and destroy infected plants.
Apply fungicides.

Faba Beans

 Monitor crops in spring, especially if the temperature is above 200C, and apply a foliar fungicide containing mancozeb or copper to prevent an epidemic.
Related and Similar Species:

References:

1291

Acknowledgments:

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