tomato plants yellowing lower leaves
Caused by a fungal pathogen, Alternaria solani, early blight gets started on the lower leaves of tomato and potato plants. Besides leaf yellowing, symptoms include spots or lesions that start out small but increase in size.aused by a fungal pathogen, Alternaria solani, early blight gets started on the lower leaves of tomato and potato plants. Besides leaf yellowing, symptoms include spots or lesions that start out small but increase in size.