The risk of Stewart's wilt, a bacterial disease of corn spread by the flea beetle, is predicted to be low this season in much of Ohio.

Only the southern portion of the state is considered at low to moderate risk, according to a report from Ohio State University.

The flea beetle index is based on the sum of the average temperatures of December, January and February.

Index values less than 90 indicate a negligible disease threat, 90-95 indicates low to moderate levels, 95-100 indicates moderate to severe, and values over 100 indicate a severe disease threat.

For more information on Stewart's wilt, visit, or the OSU Extension Agronomic Crops Team Web site at