Corn Earworm
Corn earworm migration risks return to the forecast by next week as high pressure begins to move into the Ohio and Tennessee River valleys and low pressure develops in the Plains states. Southerly winds in advance of the low pressure system may result in isolated moth flights as early as Monday night into Tuesday morning mainly across Kansas and Nebraska. Additional risk areas are found further east on Tuesday night and Wednesday with fields as far north as I-90 and west of a line from near Rochester, Minnesota through Cedar Rapids, Iowa and southwest to near Springfield, Missouri all at risk of isolated moth flights. The risk area will shift east across the corn-growing region later next week and risk levels may be increased early next week. As a result, growers are encouraged to continue monitoring the forecast as well as scouting fields that are at susceptible stages to damage as larvae from earlier moth flights this year are working through additional generations at this time.