About Stem Cankers

Disease About These Diseases Crops of Special Concern
Stem Cankers

Stem cankers are caused by anthracnose fungi, Botrytis, Rhizoctonia, and Thielaviopsis basicola (Black Rot). In some cases, Pythium and Phytophthora may also cause stem cankers. See Root/crown diseases for appropriate fungicides. Fungicides must contact the stems to be effective and are often applied as a sprench (combination of a drench and foliar spray).