Alternaria leaf blight on yellow squash?
I think my straight neck squash are getting a bad case of Alternaria leaf blight. Older leaves are yellowing and getting brown spots, and it is spreading to nearby cucumbers (I'd post a pic, but I seriously can not figure out how...). Forum searches and google searches don't offer much help. Can anything be done? Also, the weather over the past three weeks has been ridiculously hot here in northern Alabama; heat index well over one hundred, very high humidity, and it storms every day. The soil is quite damp. If it's not alternaria, could it be that the squash and cucumbers simply can't take the weather (I'm barely surviving myself, believe me). I would think that the damage would be more uniform if that was the case, but maybe the younger leaves are just stronger. Thanks for any advice,