Prior to last year’s rise in corn prices, most entomologists discouraged using both a soil insecticide at planting and a Bt corn rootworm hybrid in the same field for corn rootworm control.
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Despite some recent media reports to the contrary, corn rootworms have yet to show any resistance to Bt corn rootworm hybrids in the field, says Kevin Steffey, University of Illinois (U of I) Extension entomologist.
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Here’s a quick summary of some data that has been posted this week:
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Last fall, an epidemic of Stewart’s disease occurred with foliar symptoms showing up on many field corn varieties in numerous locations across the state.
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Harvest is rolling along nicely now in Iowa and South Dakota.
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Corn harvest continues in much of Illinois and has just gotten underway in Wisconsin.
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Here’s a quick summary of some data that has been posted this week:
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All articles for the date issue of the Wisconsin Crop Manager, Volume 14 Number 26 August 30, 2007 are now available on the web.
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Pest&Crop Newsletter Issue 24 is available:
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We’ve posted a new issue of MSU’s Field Crop CAT Alert.
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