Corn
Diseases in Ohio
Southern
corn leaf blight-race 0
- Symptoms
- small (1/4 x 1/2
to 1 1/2 inch) tan oblong lesions are generally parallel-sided
- sometimes spindled
shaped
- lesions usually
develop reddish-brown borders
- Environment
- favored by temperatures
to 70 - 90°F accompanied by heavy dews.
- Survival
- fungus survives
on corn residues and spores are spread by wind and rain
- Management
- resistant hybrids
- clean plowdown of
corn residues
- crop rotation
- Scouting
