Timber Rot on Tomatoes plus Hail Damage on Tomatoes and Sweet Corn. Pumpkin Leaves View of Symptoms on Top Surface of leaf.
Spider mites puncture cells and extract plant juices mainly on the lower surface.
An early sign of infestation is stippled areas on the foliage. Finally leaves dry out and shrivel A look at the bottom surface of the leaf. Usually a hand lens is needed to spot the mites and webbing. During the spider mite outbreak on soybeans in 1988, dimethoate was the preferred control material. Dimethoate and Metasystox-R are old organophosphate products.