Tuesday, June 26th 2012 — Corn Earworm
With rather weak southerly wind flow expected for the next several days, only Low corn earworm migration risks are predicted at this time and primarily across the western/southwestern corn-growing region. A cold front is expected to push southeast from the Rockies and Northern Plains region into the heart of the corn-growing region by late week and into next weekend. This front is not expected to be particularly strong and with high pressure currently over the Ohio River valley rather feeble, only weak southerly winds are expected and thus only Low migration risks. The risk area is initially across portions of the Plains and western Midwest tonight before expanding eastward into the central corn-growing regions of Iowa and western Illinois by Wednesday and Thursday nights. The risk area temporarily shifts west for Friday night before expanding back east and focusing in on Kansas, Missouri, Iowa, and Illinois by Saturday night.
Managing Corn Rootworm in High Pressure Areas
Historical estimates suggest northern corn rootworm and western corn rootworm are responsible for nearly $1 billion dollars annually in crop losses and control costs. Corn rootworm eggs overwinter in the soil and begin to hatch and feed on corn roots…
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