Tag Archives: Davis

Palmer amaranth confirmed glyphosate-resistant in Dane County, Wisconsin

Thomas Butts, a graduate research assistant, and Vince Davis report a new confirmation of a glyphosate-resistant weed in Wisconsin. Their full report is available here. For more information, please visit the WCWS documents page.

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Glyphosate resistance confirmed in two Wisconsin common waterhemp populations

Recently, Thomas Butts, a graduate research assistant, and Vince Davis confirmed two herbicide-resistant common waterhemp populations in Wisconsin. The full report is now available. For more information, please visit the WCWS documents page.

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Data suggests glyphosate resistance of two Wisconsin common water hemp populations

Thomas R. Butts and Vince M. Davis, Department of Agronomy, University of Wisconsin-Madison The two weed populations examined were collected from crop production fields in Eau Claire and Pierce counties. They were identified through the Late-Season Weed Escape Survey in … Continue reading

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UW Crop Diagnostic Training Center workshops for 2014

Registration is open for UW-Madison Integrated Pest Management Program’s two Crop Diagnostic Training Center workshops for 2014. The Diagnostic Troubleshooting Workshop will be held July 15, 2014. The Crop & Pest Management Workshop will be held August 5, 2014. FAST … Continue reading

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Glyphosate-resistant horseweed in Wisconsin

Ross Recker (Graduate Research Assistant), John Buol (Undergraduate Research Assistant), and Vince Davis (Assistant Professor) Department of Agronomy, UW-Madison During the 2013 late-season survey, another putative glyphosate-resistant horseweed population was collected from Columbia County. Again whole-plant dose response experiments were … Continue reading

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Palmer amaranth identified through the late-season weed escape survey

Vince Davis (Assistant Professor) Department of Agronomy, UW-Madison; Ross Recker (Graduate Research Assistant) Palmer amaranth (Amaranthus palmeri) is a dioecious, summer annual broadleaf weed species in the pigweed (Amaranthaceae) family that is extremely adaptable to environments, including the development of … Continue reading

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Late-Season Weed Survey

Vince M. Davis, Cropping Systems Weed Scientist and Extension Specialist A potential increase in herbicide-resistant weeds, particularly glyphosate-resistant weeds, is a major concern for the sustainability of Wisconsin crop production.  Ross Recker and Dr. Vince Davis are once again conducting … Continue reading

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A Horseweed Population in Wisconsin is Confirmed Resistant to Glyphosate

Ross Recker (Graduate Research Assistant), Dave Stoltenberg (Professor), Vince Davis (Assistant Professor) Department of Agronomy, UW-Madison Horseweed (Conyza canadensis L.), also known as marestail, is a broadleaf weed species native to North America.  Increased adoption of no-till cropping systems in … Continue reading

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Corn and Soybean Herbicide Use Survey Participation

Vince M. Davis, Extension Weed Scientist and Ross Recker, Graduate Research Assistant The potential increase of glyphosate-resistant weeds is a major threat to corn and soybean production across the Nation.  Integrated Weed Management tactics, including diversified herbicide use, are important … Continue reading

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Acetolactate Synthase (ALS) Inhibitor Resistance in Wisconsin Giant Ragweed

Stacey Marion (Graduate Research Assistant) , Courtney Glettner (Graduate Research Assistant), Tim Trower (Senior Outreach Specialist), Vince Davis (Assistant Professor), Dave Stoltenberg (Professor), Department of Agronomy, UW-Madison In this article, we’re reporting the confirmation of giant ragweed (Ambrosia trifida) plants … Continue reading

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