Category Archives: Weeds

Arlington Weed Garden Open for 2014

Mark Renz, Extension Weed Scientist Although summer hasn’t officially started, the weed garden is open and ready for business at the Arlington Ag. Research Station. Thanks to a generous donation by the Wisconsin Certified Crop Advisor Association we have renovated … Continue reading

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Little leaf buttercup, a bitter weed in spring hayfields

Mark Renz, Extension Weed Scientist, and Kevin Shelley, UW NPM Program Buttercups, have been showing up this spring in pastures and hayfields in southern Wisconsin.  While Wisconsin has 18 species of buttercup, little leaf buttercup (Ranunculus arbotivus) is the most commonly seen in production … Continue reading

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How to use UWEX Pest Management Mobile web app

Pest Management Mobile: a resource for pest management in agronomic crops in Wisconsin Mark Renz, Extension Weed Specialist; University of Wisconsin-Extension University of Wisconsin-Extension is pleased to announce Pest Management Mobile, which offers quick mobile access to key pest management … Continue reading

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Hop production workshops for sprayer calibration and more

UW-Madison Integrated Pest Management specialist Dan Hieder will be speaking at two hop production workshops held in Waterloo and Arkansaw, WI. Both workshops are the same and are titled “Hop Production in Wisconsin: Sprayer Calibration and Proper Pesticide Application.” Both … 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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Big weeds found at the Weed Doctor’s Booth at Farm Technology Days in Barron County

Mark Renz, Extension Weed Scientist This year we had 8 entries into the biggest weed contest.  We aren’t sure why fewer entries were submitted, maybe northern Wisconsin has fewer big weeds? While the earlier date of FTD clearly affected weed … Continue reading

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Survey on Weed Management in Switchgrass and other Perennial Crops

Ariel Larson and Mark Renz, Graduate Student and Extension Weed Scientist, University of Wisconsin-Madison We are currently researching weed management requirements in establishing switchgrass for bioenergy.  To compliment our current efforts to create weed management recommendations during establishment, we have … Continue reading

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High Value Straw and Weedy Wheat….What do I do?

Shawn Conley, Soybean and Wheat Extension Specialist, Vince Davis, Extension Weed Scientist Wet fields made spring weed control difficult to impossible in many winter wheat fields, and prolonged wet conditions have encouraged prolific weed growth from large competitive broadleaf weeds … Continue reading

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