Note: Click on the image(s) above to see larger version.

Symptoms:
A common disease on all cucurbits. Leaf symptoms appear as circular tan to black spots that give the leaves a “scorched” appearance. Stem symptoms are easily recognized as light tan necrotic areas that appear to ooze a clear to brownish sap, gum, or resin from which the disease gets its name. Fruit develop watersoaked lesions, that eventually turn brown and ooze a sticky sap.

Control:
The fungus survives from season to season on crop residue and weeds in the field border. Crop rotation is advisable. A preventative fungicide program is required. Overhead irrigation increases the problem. Soil sterilization may be needed in greenhouse situations.

See also The Texas Plant Disease Handbook.

The information given herein is for educational purposes only. Reference to commercial products or trade names is made with the understanding that no discrimination is intended and no endorsement by the Texas AgriLife Extension Service is implied.

Educational programs of the Texas AgriLife Extension Service are open to all people without regard to race, color, sex, disability, religion, age, or national origin.

Publication Revised July 2009