Anthracnose of Beans

Colletotrichum lindemuthianum

Description:

A fungus causing dark brown marks about 12 mm long on the stems of young plants and black leaf veins and spots on the leaves of older plants. Spots on stems and petioles may develop into large dark depressions. On pods, small red brown spots develop into black craters up to 12 mm wide. Masses of pink spores may be produced in these depressions in moist conditions. Seed may become infected

Species Affected:

Beans, French Beans, Mung Beans, Lima Beans.

Biology:

May be spread by seed.

Life Cycle:

Origin and History:

Distribution:

Significance:

Management and Control:

Use clean seed.
Plant resistant varieties.
Rotate beans with resistant crops.
Don't replant an area that has been infected to Beans for 2 years.
Remove diseased plants and destroy them.
Don't work in wet crops.
Apply fungicides ensuring the underside of the leaf is also sprayed.

Related and Similar Species:

References:

1291

Acknowledgments:

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