PPDL Picture of the Week for
July 23, 2012

Drought Stress in Corn Resembles Goss's Wilt

Gail Ruhl, Sr. Plant Disease Diagnostician, Department of Botany & Plant Pathology, Purdue University

Leaf scorch is common and widespread across Indiana due to heat and drought stress. Secondary, non-pathogenic fungi that feed on the dead, ‘scorched’ tissue caused by drought may appear somewhat similar to the black ‘freckles’ associated with Goss’s wilt. Look-alike symptoms can be confusing and thus it is important that you contact us to confirm any suspect Goss's Wilt infections.

See more information below:

Distinguishing Goss’s Wilt from Drought Stress in Corn - Pest and Crop Newsletter

Diseases of Corn: Goss's Bacterial Wilt and Leaf BlightBP-81 (pdf file)

Goss’s Bacterial Wilt and Leaf Blight on Corn- 2008 What's Hot

Click image to enlarge

Closeup of corn leaf

Drought stressed corn field

Purdue Plant & Pest Diagnostic Lab Purdue Cooperative Extension Service