WiscWeeds

Wisconsin Cropping Systems Weed Science Program

Weed Science Knowledge to Academics and Practitioners

University of Wisconsin-Madison

About Us

WiscWeeds Program

Our Research and Extension Program (WiscWeeds) at the University of Wisconsin-Madison focuses on agroecologically-based approaches to address sustainable weed management in corn, soybeans and small grains in Wisconsin and beyond. Our program also focuses on weed management strategies that can help address herbicide resistance, protect water quality, enhance agroecosystems services and increase food security. Click to download the WiscWeeds Team Program Statement!
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WiscWeeds Team 2021
2021 WiscWeeds Team

WiscWeeds Team 2020
2020 WiscWeeds Team

WiscWeeds Team 2019
2019 WiscWeeds Team


Latest Posts

More Posts

With another growing season coming to an end, the planning for next year’s weed management decisions should have already begun. Fortunately for Wisconsin producers two new tank-mix herbicides have been recently registered for use in Wisconsin corn production (MaverickTM and Resicore® XL).

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Planting winter wheat after soybean harvest? Check this blog post for information on winter wheat rotational restrictions following commonly used soybean herbicides.

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Check the results and field images of 22 corn and soybean herbicide evaluation research trials conducted by the Wisconsin Cropping Systems Weed Science Program during the 2021 growing season.

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Check the results of the 2021 WiscWeeds study evaluating multiple two pass herbicide programs for weed control in conventional corn.

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Over the last two growing seasons (2020 and 2021), weather and soil conditions across southern Wisconsin were favorable for early soybean planting. Herein we attempt to address some of the questions we have been receiving regarding PRE-emergence herbicide selection for early planted soybeans.

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Reports

Data Reports & Presentations

2022

Don’t Catch My Drift? Let’s Check Under the Spray Hood (Story Map)

Winter Wheat Rotational Restrictions Following Common Soybean Residual Herbicides (PDF)

Weed Suppression in Corn-Soy Systems with Cereal Rye (Story Map)

WISCWEEDS RESEARCH UPDATE SERIES, Article 8: Influence of Integrated Agronomic and Weed Management Practices on Soybean Canopy Development and Yield (PDF)

2021

2021 Wisconsin Weed Science Research Report (PDF)

2021 Corn Weed Control Trials (field images):

2021 Soybean Weed Control Trials (field images):

2021 Bareground Weed Control Trials (field images):

2021 WiscWeeds Comparison of Herbicide Programs for Conventional Corn (PDF)

WISCWEEDS RESEARCH UPDATE SERIES, Article 7: Preemergence Herbicides, Not Carrier Volume, Impacted Weed Management in Conventional Tillage Systems (PDF)

Application Window for Soybean Herbicides with Soil Residual Activity (PDF)

2021 WiscWeeds Herbicide Comparison for Residual Weed Control in Soybeans on Sandy Soils (PDF)

2021 WiscWeeds Herbicide Comparison for Residual Weed Control in Corn (PDF)

WISCWEEDS RESEARCH UPDATE SERIES, Article 6: Large scale evaluation of 2,4-D choline off-target movement and injury in 2,4-D susceptible soybean (PDF)

WISCWEEDS RESEARCH UPDATE SERIES, Article 5: Evaluating efficacy of preemergence soybean herbicides using field treated soil in greenhouse bioassays (PDF)

WISCWEEDS RESEARCH UPDATE SERIES, Article 4: Influence of PRE-emergence herbicides on soybean development, root nodulation and symbiotic nitrogen fixation (PDF)

2020

2020 Wisconsin Weed Science Research Report (PDF)

2020 Corn Weed Control Trials (field images):

2020 Soybean Weed Control Trials (field images):

2020 Bareground Weed Control Trials (field images):

WISCWEEDS RESEARCH UPDATE SERIES, Article 3: Influence of sulfentrazone and metribuzin applied preemergence on soybean development and yield (PDF)

2020 Pest Management Update Meetings: WiscWeeds Research Update (PDF)

WISCWEEDS RESEARCH UPDATE SERIES, Article 2: Soybean injury as influenced by synthetic auxin formulation and spray additives (PDF)

WISCWEEDS RESEARCH UPDATE SERIES, Article 1: Spray solution pH as influenced by synthetic auxin formulation and spray additives (PDF)

Weed Seed Movement Via Combines: 2019-2020 Case Study (PDF)

Weed Seed Management at Crop Harvest (PDF)

2020 WiscWeeds Comparison of POST-emergence Corn and Soybean Herbicides (Slides)

2020 Post-emergence Corn and Soybean Herbicide Product Restrictions for Broadcast Applications (PDF)

2019

2019 Pest Management Update Meetings: WiscWeeds Research Update (PDF)

Residual Control of Waterhemp with PRE-emergence Herbicides in Soybean (PDF)

2019 WiscWeeds Comparison of Soil Residual Herbicides in Corn (PDF)

2019 Wisconsin Weed Science Research Report (PDF)

2019 Corn Weed Control Trials (field images):

2019 Soybean Weed Control Trials (field images):

2019 Wisconsin large-scale 2,4-D drift trial (Vimeo Video)

Cover crops after corn silage: spring termination options (YouTube Video)

Early-season soybean herbicide injury (YouTube Video)

Another herbicide-resistant Palmer amaranth population detected in Wisconsin (YouTube Video)

Weed Talk: Getting the most out of glufosinate (Vimeo Video)

Industrial hemp herbicide carryover considerations (YouTube Video)

Considerations prior to cereal rye cover crop termination (Vimeo Video)

2018

2018 Wisconsin Weed Science Research Report (PDF)

2018 UW Waterhemp Challenge: Comparison of Soil Residual Herbicides (PDF)

2018 Large-Scale Dicamba Drift Study (YouTube Video)

2018 Tips on Waterhemp Management in Wisconsin Soybeans (YouTube Video)

2018 Update on Herbicide Resistant Weeds in Wisconsin (YouTube Video)

2017

2017 Nebraska Dicamba Survey (YouTube Video)

2017 Nebraska Cover Crop and Weed Control Survey (YouTube Video)

2017 Cover Crop Termination (YouTube Video)

Research Coalition

Projects

WiscWeeds Research Coalition - Ongoing Projects:

"Logo"

Given the widespread occurrence of herbicide-resistant weeds across Wisconsin Cropping Systems, the shortage of novel herbicide sites of action, and the socioeconomic and environmental challenges herbicide-resistant weeds bring to farming operations and communities, it’s time for our industry to come together and work towards a similar goal: to promote and hopefully achieve effective and sustainable weed control in crop production systems.

The objective of the WiscWeeds Research Coalition is to bring together Researchers, Educators, Policy Makers, Industry, Consultants, Service Providers, and Growers to work towards preventing the spread, reducing the selection for, and to increase the adoption of integrated management strategies to combat herbicide-resistant weed species. Through the WiscWeeds Research Coalition we expect to develop a strong relationship amongst key stakeholders allowing for effective exchange of materials, practical knowledge and research-based recommendations.

“Alone we can do so little; together we can do so much” Helen Keller

Sincerely,
Rodrigo Werle, Nick Arneson and Dan Smith

Team

WiscWeeds Lab

Meet the 2022 WiscWeeds Team - CLICK HERE


Rodrigo Werle (Assistant Professor & Extension Cropping Systems Weed Scientist):

Rodrigo Werle
Dr. Werle is an Assistant Professor and Extension Cropping Systems Weed Scientist at UW-Madison (from Sao Paulo, Brazil; BS from Sao Paulo State University, and MS and PhD from the University of Nebraska-Lincoln) leading the Research and Extension efforts of the WiscWeeds Program (See “Werle Bio” tab for additional information).


Nick Arneson (Weed Science Outreach Program Manager):

Ryan DeWerff
Nick is a Weed Science Outreach Program Manager at UW-Madison (from Omaha, Nebraska; BS and MS from the University of Nebraska-Lincoln) coordinating the WiscWeeds Lab activities, Extension programming, and circulation of outreach publications.


Ryan DeWerff (Weed Science Research Specialist):

Ryan DeWerff
Ryan is a Weed Science Research Specialist at UW-Madison (from Nokomis, Illinois; BS from the University of Illinois and MS from the University of Wisconsin-Madison) managing the Wisconsin Herbicide Evaluation Program and providing technical assistance for ongoing program and graduate student research projects.


Nikola Arsenijevic (Weed Science Research Assistant):

Nikola Arsenijevic
Nikola is a Weed Science research assistant (from Serbia; BS from the University of Belgrade and MS from the University of Wisconsin-Madison) evaluating integrated weed management strategies in corn and soybean production systems, assisting the Wisconsin Herbicide Evaluation Program, and providing technical assistance for ongoing program and graduate student research projects.


Dan Smith (UW-NPM Southwest Wisconsin Regional Agronomy Specialist):

Dan Smith

Dan is a Southwest Regional Agronomist for the UW-Madison Nutrient and Pest Management Program (from Walnut, Illinois; BS from the University of Wisconsin-Platteville and MS from the University of Wisconsin-Madison) providing technical assistance towards weed science research and outreach activities.


Maxwel Coura Oliveira (Weed Science Postdoctoral Research Associate):

Maxwel Oliveira
Dr. Oliveira is a Weed Science Postdoctoral Research Associate at UW-Madison (from Minas Gerais, Brazil; BS and MS from the Federal University of Jequitinhonha and Mucuri Valleys, and PhD from the University of Nebraska-Lincoln) investigating the distribution and management of herbicide-resistant weeds in Wisconsin and evaluating weed management strategies in corn, soybeans, and small grains. He trains the Badger Weeds Team, mentors graduate and undergraduate students in the Cropping Systems Weed Science program and assists with the Wisconsin Herbicide Evaluation Program.


Felipe Faleco (PhD Weed Science Graduate Student):

Felipe Faleco
Felipe is a Weed Science PhD graduate student at UW-Madison (from Sao Paulo, Brazil; BS from Sao Paulo State University and MS from the University of Wisconsin-Madison) working on evaluating the impact of extreme weather events on metabolic weed resistance.


Jose Jr. Nunes (PhD Weed Science Graduate Student):

Jose Jr Nunes
Jose Jr. is a Weed Science PhD graduate student at UW-Madison (from Mato Grosso, Brazil; BS from the University of Cuiaba and MS from Goiano Federal Institute) working on the impact of soil and cover crop management strategies on the deposition and fate of PRE-emergence herbicides in soybean cropping systems.


Tatiane Severo Silva (Visiting PhD Weed Science Graduate Student):

Jose Jr Nunes
Tatiane is a visiting Weed Science PhD graduate student at UW-Madison (from Pernambuco, Brazil; BS from Maranhao State University, MS from the Federal Rural University of the Semi-Arid) investigating the soil residual activity of PRE-emergence corn herbicides and their impact on the establishment of multiple cover crop species. In Brazil, she conducted research evaluating herbicide carryover and fate in the environment.


Guilherme Chudzik (MS Weed Science Graduate Student):

Guilherme is a Weed Science MS graduate student at UW-Madison (from Sao Paulo, Brazil; BS from the University of Sao Paulo) working on weed management in early-planted soybeans.


WiscWeeds Team 2021
2021 WiscWeeds Team


Former Lab Members

Sarah Striegel (Former Weed Science MS Graduate Student):

Sarah Striegel
Sarah was a Weed Science MS graduate student at UW-Madison from 2018-2020 (from What Cheer, Iowa; BS from Iowa State University) working on optimizing dicamba use in RR2Xtend soybean systems and mitigating potential for off-target movement.


Victor Ribeiro (Former Visiting Weed Science MS Graduate Student):

Victor Ribeiro
Victor was a visiting Weed Science MS graduate student at UW-Madison from 2018-2020 (from Minas Gerais, Brazil; BS from Federal University of Jequitinhonha & Mucuri Valleys) working on evaluating the soil residual activity of multiple single active ingredient PRE-emergence soybean herbicides and their effect on soybean nodulation and N fixation.


Alex Rosa (Former Weed Science Postdoctoral Research Associate):

Victor Ribeiro
Dr. Rosa was a Weed Science Postdoctoral Research Associate at UW-Madison from 2020-2021 (from Rio Grande do Sul, Brazil; BS from Federal University of Rio Grande do Sul, MS from Kansas State University, and PhD from University of Nebraska-Lincoln) investigating the distribution of herbicide-resistant weeds in Wisconsin and evaluating integrated weed management strategies in corn, soybeans, and small grains. He mentors graduate and undergraduate students in the Cropping Systems Weed Science program and assists with the Wisconsin Herbicide Evaluation Program.


Kolby Grint (Former Weed Science MS Graduate Student):

Felipe Faleco
Kolby was a Weed Science MS graduate student at UW-Madison from 2019-2021 (from Sargent, Nebraska; BS from University of Nebraska-Lincoln) working on evaluating the effects of cover crops on herbicide carryover and weed seedbank distribution in corn-soybean cropping systems.


Haleigh Ortmeier-Clarke (Former Agronomy MS Graduate Student):

Felipe Faleco
Haleigh was an Agronomy MS graduate student at UW-Madison from 2019-2021 (from Stayton, Minnesota; BS from University of Minnesota) working on evaluating cultivation methods for industrial hemp production.


Bruno Canella Vieira (Weed Science Postdoctoral Research Associate):

Dr. Vieira was a Weed Science Postdoctoral Research Associate at UW-Madison in 2021 (from Sao Paulo, Brazil; BS from Sao Paulo State University, and PhD from the University of Nebraska-Lincoln) investigating integrated strategies for management of herbicide-resistant weeds and mitigation of pesticide off-target movement.

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