Bean leaves - Ask Extension
Good afternoon,
I have vine beans in my garden that have started developing these brown spots. I have been applying "Garden Safe Fungicide 3&...
Knowledgebase
Bean leaves #800727
Asked July 12, 2022, 1:01 PM EDT
Good afternoon,
I have vine beans in my garden that have started developing these brown spots. I have been applying "Garden Safe Fungicide 3" every 7 days as a preventative. However, it has not helped the problem. I fear it is spreading to other plants as I have tomato plants right next to the beans and their leaves are beginning to yellow. I've included a picture of the bean leaves. Could you please help me identify what is on the leaves and what I should do to remedy it? Thank you for your help!
Montgomery County Ohio
Expert Response
It is extremely difficult to diagnose what is wrong with your beans from a photo, however you can use your own observations of all the infected areas and narrow down what is wrong. Here's a key: What's wrong with my string bean plant? https://apps.extension.umn.edu/garden/diagnose/plant/vegetable/snapbean/
And:
https://plantvillage.psu.edu/topics/bean/infos
To confirm the exact cause of the bean leaf damage, you can send a specimen to the OSU Plant Pest and Pathology diagnostic lab. https://ppdc.osu.edu/submit-sample
The issue of your tomato leaves yellowing is an unrelated problem, specific to your tomatoes. Here is a key to help you diagnose possible causes thorough your own observations. http://vegetablemdonline.ppath.cornell.edu/DiagnosticKeys/TomLeaf/TomLeafKey.html
Whenever using a chemical control, always follow label directions.
And:
https://plantvillage.psu.edu/topics/bean/infos
To confirm the exact cause of the bean leaf damage, you can send a specimen to the OSU Plant Pest and Pathology diagnostic lab. https://ppdc.osu.edu/submit-sample
The issue of your tomato leaves yellowing is an unrelated problem, specific to your tomatoes. Here is a key to help you diagnose possible causes thorough your own observations. http://vegetablemdonline.ppath.cornell.edu/DiagnosticKeys/TomLeaf/TomLeafKey.html
Whenever using a chemical control, always follow label directions.
