What chemicals should be used to control blight?
Ortho multi purpose fungicide (Daconil 2787) or any other product containing chlorothalonil can be used. It is a preventative spray and will keep the disease from spreading to more leaves. Which tomato variety or varieties aren’t affected by tomato blight? Don’t think there is such a variety. NDSU did some testing a few years back and all the varieties tested became infected. Just watch your plants and start spraying with a fungicide when you notice brown spots on the lower leaves.
