anthracnose a problem?

Asked July 7, 2015, 8:25 PM EDT

it seems like every year now some fungus is attacking my cucumbers and tomatoes. Has that been a problem this year with the rains in Rockville? any suggestions? You can see that plants are weak and there will not be much fruit. I have sense it just lives in soil?

Montgomery County Maryland

1 Response

Based on your photos it looks like the cucumbers and tomatoes are subject to leaf spot diseases. Cucumbers in general can be subject to several leaf spots such as anthracnose, angular leaf spot and tar spot diseases. It is too late to spray this year. If you have space in your garden, it is not too late to replant. See our link on anthracnose http://extension.umd.edu/growit/anthracnose-vegetables
In the future you can look for resistant varieties http://vegetablemdonline.ppath.cornell.edu/Tables/TableList.htm

Tomatoes - It is normal for the bottom leaves to yellow and drop as the plant ages. Tomatoes can be susceptible to several foliar diseases. Two common foliar diseases are early blight and septoria but it does not matter which disease it is because the management is the same. Select disease resistant varieties, remove the lower leaves to slow the upward spread of the disease, keep plants well mulched to minimize soil splashing, water at the base of the plants, provide adequate spacing, and spray with an organic fungicide (fixed copper) early in the season to lessen the spread of the disease. Fungicide treatments can help to protect new or un-infected foliage, they are not curatives. Remove infected plant material at the end of the season. See our website for more information on early blight http://extension.umd.edu/growit/early-blight-vegetables and septoria http://extension.umd.edu/growit/septoria-leaf-spot-vegetables
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