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Section 18 for Coragen, for Corn Earworm, Sweet Corn |
Wisconsin Crop Manager
Insects and Mites
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By WCM Staff on
7/24/2008 5:40 PM
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On July 23rd, the U.S. EPA approved a Section 18 request by the Wisconsin Department of Agriculture Trade and Consumer Protection (WI DATCP) and UW Madison Entomology Department for the use of the insecticide, Coragen (DuPont), in the state of Wisconsin. Use of Coragen on sweet corn is targeted for late-planted sweet corn that is historically susceptible to migrating Corn Earworm (CEW) moths that cause considerable damage to sweet corn ears.
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Soybean Aphid Increasing and Variable – Scout Fields Now |
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Wisconsin Crop Manager
Insects and Mites
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By WCM Staff on
7/24/2008 2:50 PM
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This week soybean aphid populations have increased noticeably. That is a relative term in this case. In some areas such as Dodge and Sauk Counties, this increase is from near zero activity to field averages of 10 aphids/plant and 30-60 aphids/plant. In other areas however, West Central and East Central Wisconsin for example, higher populations are starting to be reported closer to Economic Threshold in a few fields.
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Corn Rootworm Beetles and Silk Clipping |
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Wisconsin Crop Manager
Insects and Mites
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By WCM Staff on
7/17/2008 1:34 PM
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This could be one of those years when it pays to scout corn fields for silk clipping caused by Western and Northern corn rootworm beetles. Both species are attracted to pollinating fields and are capable of clipping silks prior to fertilization resulting in poor ear fill. The concern this year would be over variable planting dates.
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Print issue files for 2007
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Crop Manager Vegetable Update
Clicking on these links will access the Wisconsin Crop Manager PDF files for 2008.
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Clicking on these links will access the Wisconsin Vegetable Crop Update PDF files for 2007.
- Aug 28, 2008 >> Veg Update 2008-16
- July 31, 2008>> Veg Update 2008-11
- July 24, 2008>> Veg Update 2008-10
- July 17, 2008 >> Veg Update2008-9
- July 10, 2008 >> Veg Update2008-8
- July 3, 2008 >> Veg Update2008-7
- June 26, 2008 >> Veg Update2008-6
- June 19, 2008>> Veg Update2008-5
- June 12, 2008>> Veg Update2008-4
- June 5, 2008>> Veg Update2008-3
- May 28, 2008>> Veg Update2008-2
- May 22 2008 >> Veg Update2008-1
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- August 22 >> Veg Update2007-11
- August 9 >> Veg Update2007-10
- July 26 >> Veg Update2007-9
- July 19 >> Veg Update2007-8
- July 11 >> Veg Update2007-7
- July 5 >> Veg Update2007-6
- June 28 >> Veg Update2007-5
- June 21 >> Veg Update2007-4
- June 14 >> Veg Update2007-3
- June 6 >> Veg Update2007-2
- May 30 >> Veg Update2007-1
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