Tag Archives: Renz

Herbicide Resistance in Wisconsin: An Overview (December 2018)

Joseph Zimbric (UW-Madison Agronomy Graduate Student), David Stoltenberg(UW-Madison Agronomy Professor), Mark Renz (UW-Madison Extension Weed Scientist) and Rodrigo Werle (UW-Madison Extension Weed Scientist) 20 Unique Cases of Herbicide Resistance in Wisconsin 20 unique cases (weed species by herbicide site of action) of herbicide resistance have … Continue reading

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Managing Volunteer Wheat in Late Summer Seeded Alfalfa

Mark Renz, Associate Professor and Extension Specialist, University of Wisconsin This summer is shaping up to be a great year for volunteer wheat in our late summer seeded alfalfa stands. This “weed” often raises questions about whether it should be … Continue reading

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Warrant Now Registered For Use in Alfalfa in Wisconsin

Mark Renz Associate Professor and Extension Specialist, University of Wisconsin Warrant is an encapsulated formulation of acetochlor, often used for pre-emergent weed control in soybeans has just received registration for use in establishing and established alfalfa in Wisconsin. For details … Continue reading

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Update on Waterhemp and Palmer Amaranth in Wisconsin

Waterhemp and Palmer Amaranth in Wisconsin: an update on locations and call to report new infestations. Mark Renz, UW Madison Associate Professor and Extension Specialist We have been observing the continued spread of waterhemp and Palmer amaranth in Wisconsin. These … Continue reading

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Pollinator Habitat Planning Workshop for Farmers and Landowners

Mark Renz, Associate Professor and Extension Specialist University of Wisconsin Madison Interested in pollinator plantings for a client or your own farm? If so consider attending one of two workshops being held in August in Dane county (August 14th Edgerton, … Continue reading

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Despite the Weather 2018 Weed Emergence Only One Week Behind

Mark Renz Extension Weed Scientist, Agronomy Department, University of Wisconsin-Madison Knowledge of weed emergence is important as it can help in the selection and optimization of early season weed control. While typically weed emergence is consistent from year to year, … Continue reading

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2017 Wisconsin Pest Management Update Meetings

Mark Renz UW Madison Associate Professor and Extension Specialist Does you job involve pest management in field crops in Wisconsin?  If so consider attending one of our 7 update meetings held throughout the state November 6-10 (click here for specific … Continue reading

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Weed Identification Series, Galinsoga (Quickweed)

Mark Renz UW Madison Associate Professor and Extension Specialist, Chelsea Zegler UW Madison Associate Research Specialist Due to the warm weather last week we thought we would share one more weed ID plant for the season: Quickweed aka Galinsoga. We actually … Continue reading

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Weed Identification Series, Barnyardgrass

Mark Renz UW Madison Associate Professor and Extension Specialist, Chelsea Zegler UW Madison Associate Research Specialist Well the season is nearly over, but we wanted to point out a weed species that had a prolific year: Barnyardgrass. This species has long … Continue reading

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Weed Identification Series, Biennial Wormwood

Mark Renz UW Madison Associate Professor and Extension Specialist, Chelsea Zegler UW Madison Associate Research Specialist Biennial wormwood is not new to Wisconsin, as has been in the state over 100 years, but I have seen it spreading throughout Wisconsin for … Continue reading

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