Corn Earworm
The second of two weather systems predicted to move through the corn-growing region this week will continue to develop across the High Plains or in southern Canada over the next 18-24 hours. Southerly winds will increase especially in the Plains states and western corn-growing region, mainly west of the I-35 corridor, today into tonight. Low corn earworm migration risks are predicted in this region through tomorrow morning. This low pressure system will eventually push east across southern Canada or into the northern Great Lakes by later Friday, with a trailing cold front south of the low moving through the corn-growing region. This front will bring a return to cooler and drier air by the weekend, but before that happens Moderate corn earworm migration risks are found in south to southwest winds east of the front especially across southern and eastern Wisconsin, northern Illinois, far northern Indiana and northwest Ohio, and into southern lower Michigan with Low risks extending from as far west as the I-35 corridor to as far east as southern Ontario, Canada and eastern Ohio and Kentucky. Fresh market and processing growers should continue trapping and scouting efforts, and new moth flights are likely to occur over the next several days to week in response to these two weather systems moving through the corn-growing region this week.