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Dealing With Anthracnose
Farmer's Weekly
|June 22, 2018
This fungal disease can wipe out a dry bean crop. Here’s how to prevent, and treat, this problem.
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Anthracnose is one of the most invasive and destructive dry bean diseases. It can destroy up to 95% of your crop while also threatening the growth rate and seed and pod quality.
The disease is caused by the fungus Colletotrichum lindemuthianum, which is mainly seed-borne. In South Africa, it is most common in KwaZulu-Natal, Mpumalanga and parts of Limpopo.
Initial symptoms are brick red lesions that appear on the veins on the lower leaf surfaces. These then become darker and spread to the upper side of the leaves and stems.
Lesions also appear on the pods, starting as small reddish brown to purple spots that grow to between 5mm and 8mm, becoming darker and sunken.
This story is from the June 22, 2018 edition of Farmer's Weekly.
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