Check the results of 22 corn and soybean herbicide evaluation research trials conducted by the Wisconsin Cropping Systems Weed Science Program during the 2020 growing season.
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.
Check the results of 22 corn and soybean herbicide evaluation research trials conducted by the Wisconsin Cropping Systems Weed Science Program during the 2020 growing season.
Herein we provide the highlights and access to two technical articles for download related to our latest publication entitled: “Spray solution pH and soybean injury as influenced by synthetic auxin formulation and spray additives”.
Crop harvest is here and that means it’s time to be thinking about weed seedbank management. Check the results of our “2019-2020 Case Study: Weed Seed Movement Via Combines”.
Check our handy guide for over-the-top broadcast application windows of commonly used POST herbicides in corn and soybean.
With warmer temperatures and rainfall in the forecast, cover crops will start growing rapidly; thus, it’s important to have a solid termination plan in mind prior to crop establishment. Herein we provide some research-based info to support growers’ decisions regarding time and strategy for cover crop termination.
Data Reports & Presentations
2020 Wisconsin Weed Science Research Report (PDF)
2020 Pest Management Update Meetings: WiscWeeds Research Update (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 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):
Evaluation of Soybean Soil Residual Herbicides - Brooklyn (PDF)
Evaluation of Soybean Soil Residual Herbicides - Found du Lac (PDF)
Liberty and Enlist One/Enlist Duo Efficacy in Enlist Soybean (PDF)
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 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 Nebraska Dicamba Survey (YouTube Video)
2017 Nebraska Cover Crop and Weed Control Survey (YouTube Video)
Projects
WiscWeeds Research Coalition - Ongoing Projects:
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.
Sincerely,
Rodrigo Werle, Nick Arneson and Dan Smith
Peer-Reviewed
32 Manuscripts & 1 Book Chapter
33. Bagavathiannan, M., H. Beckie, G. Chantre, J.L. Gonzalez-Andjujar, R. Leon, P. Neve, S. Poggio, B.J. Schutte, G.J. Somerville, R. Werle., and R.C. Van Acker. Simulation models in weed ecology and management: structure, quantitative insights, and applications. Agronomy. 10(10), 1611.
32. Oliveira, M.C., O.A. Ospitan, K. Begcy, and R. Werle. 2020. Cover crops, hormones and herbicides: Priming integrated weed management strategies. Plant Science. 301:110550 (invited submission).
31. Soltani, N., M.C. Oliveira, G.S. Alves, R. Werle, J.K. Norsworthy, C.L. Sprague, B.G. Young, D.B. Reynolds, A. Brown, and P. Sikkema. 2020. Large-scale off-target movement assessment of dicamba in North America. Weed Technology.34:318-330.
30. Sciarresi, C., C. Proctor, E.R. Haramoto, L.E. Lindsey, G.I. Carmona, R. Elmore, S. Everhart, W. Looker, M. Marroquin-Guzman, J. McMechan, J. Wehrbein, R. Werle, and M. Salmeron. 2020. Evaluating short-season soybean management adaptations for cover crop rotations with a crop simulation model. Field Crops Research. 250:107734.
29. B.C. Vieira, J.D. Luck, K.L. Amundsen, R. Werle, T.A. Gaines, and G.R. Kruger. 2020. Herbicide drift exposure leads to reduced herbicide sensitivity in Amaranthus spp. Scientific Reports. 10:2146.
28. Vieira, B.C., J.D. Luck, K.L. Amundsen, T.A. Gaines, R. Werle, and G.R. Kruger. 2019. Response of Amaranthus spp. following exposure of sublethal herbicide rates via spray particle drift. PLoS ONE. 14(7).
27. Oliveira, M., L. Butts, and R. Werle. 2019. Assessment of cover crop management strategies in Nebraska, US. 2019. Agriculture. 9(6):124.
26. Lo, T.H., D.R. Rudnick, C.A. Burr, M.C. Stockton, and R. Werle. 2019. Approaches to evaluating grower irrigation and fertilizer nitrogen amount and timing. Agricultural Water Management. 213:693-706. Accepted Directly by the Editor Due to High Quality and Relevance to Readers.
25. Werle, R., M.C. Oliveira, A.J. Jhala, C.A. Proctor, J. Rees, and R. Klein. 2018. Survey of Nebraska farmers’ adoption of dicamba-resistant soybean technology and dicamba off-target movement. Weed Technology. 32:754-761.
24. Butts, T.R., B.C. Vieira, D.O. Latorre, R. Werle, and G. Kruger. 2018. Competitiveness of herbicide-resistant waterhemp (Amaranthus tuberculatus) with soybeans. Weed Science. 66:729-737.
23. Oliveira, M.C., G.A.M. Pereira, E.A. Ferreira, J.B. Santos, S.Z. Knezevic, and R. Werle. 2018. Additive design: the concept and data analysis. Weed Research. 58:335-347.
22. Vennapusa, A.R., F. Faleco, B. Vieira, S. Samuelson, G.R. Kruger, R. Werle, and M. Jugulam. 2018. Prevalence and mechanism of atrazine resistance in common waterhemp (Amaranthus tuberculatus) from Nebraska. Weed Science. 66:595-601.
21. Stepanovic, S.V., C. Burr, J.A. Peterson, D. Santra, D. Rudnick, T. Adesemoye, C.F. Creech, and R. Werle. 2018. Field peas response to seeding rate, depth and inoculant in west-central Nebraska. Agronomy Journal. 110:1412-1419.
20. Werle, R., and J. Miller. 2018. Survey of Nebraska soybean producers: current and future status of weed management. Journal of Extension. 56(2).
19. Werle, R., C. Burr, and H. Blanco-Canqui. 2018. Cereal rye cover crop suppresses winter annual weeds. Canadian Journal of Plant Science. 98:498-500.
18. Vieira, B.C., S.L. Samuelson, G.S. Alves, T.A. Gaines, R. Werle, and G.R. Kruger. 2018. Distribution of glyphosate-resistant Amaranthus spp. in Nebraska. Pest Management Science. Wiley Online Library. DOI 10.1002/ps.4781
17. Rudnick, D.R., T. Lo, J. Singh, R. Werle, F. Munoz-Arriola, T. Shaver, C.A. Burr, T.J. Dorr. 2018. Reply to comments on “Performance assessment of factory and field calibrations for electromagnetic sensors in a loam soil”. Agricultural Water Management. 203:272-276.
16. Singh, J., T. Lo, D.R. Rudnick, T.J. Dorr, C.A. Burr, R. Werle, T.M. Shaver, F. Munoz-Arriola. 2018. Performance assessment of factory and field calibrations for electromagnetic sensors in a loam soil. Agricultural Water Management. 196:87-98.
15. Elmore, R.W., R. Werle, C. Wortmann, P. Tukamuhabwa, and N. Mueller. 2018. Sustainable soybean production research and practice: contrasting case studies from three soybean production areas. Nguyen, H. (ed.), Achieving sustainable cultivation of soybeans Volume 1: Breeding and cultivation techniques, Burleigh Dodds Science Publishing, Cambridge, UK (ISBN: 978 1 78676 112 5)
14. Barnes, E., R. Werle, L.D. Sandell, J.L. Lindquist, S.Z. Knezevic, P.H. Sikkema, and A. Jhala. 2017. Influence of tillage on common ragweed (Ambrosia artemisiifolia) emergence pattern in Nebraska. Weed Technology. 31:623-631.
13. Werle, R., K. Begcy, M. K. Yerka, I. Dweikat, A. J. Jhala, J. P. Mower, and J. L. Lindquist. 2017. Independent evolution of acetolactate synthase-inhibiting herbicide resistance in weedy Sorghum populations across common geographic regions. Weed Science. 65:164-176.
12. Werle, R., B. Tenhumberg, and J. L. Lindquist. 2017. Modeling the evolution of shattercane resistance to ALS-inhibiting herbicides in an ALS-tolerant sorghum cropping system. Ecological Modeling. 343:131-141.
11. Saini, S., R. Werle, L.D. Sandell, and A. Jhala. 2016. Spring-tillage has no effect on the emergence pattern of glyphosate-resistant giant ragweed (Ambrosia trifida L.) in Nebraska. Canadian Journal of Plant Science. 96: 726-729.
10. Werle, R., A. Jhala, M.K. Yerka, J.A. Dille, and J.L. Lindquist. 2016. Distribution of herbicide-resistant shattercane and johnsongrass populations in sorghum production areas of Nebraska and northern Kansas. Agronomy Journal. 108:321-328. Invited Submission.
9. Werle, R., L.J. Giesler, M.L. Bernards, and J.L. Lindquist. 2015. Likelihood of soybean cyst nematode (Heterodera glycines) reproduction on henbit (Lamium amplexicaule) roots in Nebraska. Weed Technology. 29:35-41.
8. Werle, R., L.D. Sandell, D.D. Buhler, R.G. Hartzler, and J.L. Lindquist. 2014. Predicting emergence of twenty three summer annual weed species. Weed Science. 62:267-279.
7. Werle, R., M.L. Bernards, T.J. Arkebauer, and J.L. Lindquist. 2014. Environmental triggers of winter annual weed emergence in the midwestern United States. Weed Science. 62:83-96.
6. Werle, R., L.L. Perez, L.D. Sandell, and J.L. Lindquist. 2014. Corn (Zea mays) emergence and early growth as influenced by tansymustard (Descurainia pinnata) residue. Crop Management. doi:10.2134/CM-2013-0088-RS.
5. Werle, R., J.J. Schmidt, J. Laborde, A. Tran, C. Creech, and J.L. Lindquist. 2014. Shattercane X ALS-resistant sorghum F1 hybrid and shattercane interference in ALS-resistant sorghum. Journal of Agricultural Science. 6:159-165.
4. Werle, R., M.L. Bernards, L.J. Giesler, and J.L. Lindquist. 2013. Influence of two herbicides on soybean cyst nematode (Heterodera glycines) reproduction on henbit (Lamium amplexicaule) roots. Weed Technology. 27:41-46. Outstanding paper in Weed Technology.
3. Han, C., C. Borman, D. Osantowski, J. Wagnitz, K. Koehler-Cole, K. Korus, E. Sonderegger, R. Werle, T. Wood, and J. L. Lindquist. 2012. Productivity of field pea (Pisum sativum L.) and spring oat (Avena sativa L.) grown as sole and intercrops under different nitrogen levels. Journal of Agricultural Science. 4:136-143.
2. Rosolem, C.A., R. Werle, R.A. Garcia. 2010. Nitrogen washing from C3 and C4 cover grasses residues by rain. Revista Brasileira de Ciência do Solo. 34:1899-1905.
1. Werle, R., R.A. Garcia, C.A. Rosolem. 2008. Potassium leaching as affected by soil texture and potassium availability. Revista Brasileira de Ciência do Solo. 32:2297-2305 (In Portuguese with English abstract).
Additional Resources
Pest Management in Wisconsin Field Crops
UWEX Bulletin A3646 (PDF)
Wisconsin Herbicide Mode of Action Chart & Combination Products (PDF)
Herbicide Site of Action Key for Crop Injury Symptoms (PDF)
Soybean Injury from Dicamba UWEX Bulletin A4161 (PDF)
Herbicide rotational restrictions for cover and forage cropping systems (PDF)
Wisconsin Integrated Pest & Crop Management
Wisconsin Pesticide Applicator Program
Wisconsin Corn Agronomy
Wisconsin Soybean and Small Grains (COOLBEAN)
Wisconsin Weed Science
Wisconsin Field Crops Pathology
Wisconsin Machinery Extension
Take Action - Pesticide Resistance Management
Take Action - Herbicide Classification MOA Chart (PDF)
Weed Science Society of America
North Central Weed Science Society
WiscWeeds Lab
Rodrigo Werle (Assistant Professor & Extension Cropping Systems Weed Scientist):
Nick Arneson (Weed Science Outreach Specialist):
Ryan DeWerff (Weed Science Research Specialist):
Maxwel Coura Oliveira (Weed Science Postdoctoral Research Associate):
Alex Rosa (Weed Science Postdoctoral Research Associate):
Dan Smith (UW-NPM Southwest Wisconsin Regional Agronomy Specialist):
Sarah Striegel (Weed Science Research Assistant):
Nikola Arsenijevic (MS Weed Science Graduate Student):
Victor Ribeiro (Visiting MS Weed Science Graduate Student):
Felipe Faleco (MS Weed Science Graduate Student):
Kolby Grint (MS Weed Science Graduate Student):
Haleigh Ortmeier-Clarke (MS Weed Science Graduate Student):
Jose Jr. Nunes (Visiting MS Weed Science Graduate Student):
No one has left (thankfully) or graduated from our program yet!
Rodrigo Werle is an Assistant Professor and Extension Cropping Systems Weed Scientist in the Agronomy Department at UW-Madison. His research and extension program (WiscWeeds) focuses on agroecologically-based approaches to address sustainable weed management in corn, soybeans and small grains in Wisconsin and beyond. The program also focuses on weed management strategies that can help address herbicide resistance, protect water quality, enhance agroecosystems services and increase food security.
Rodrigo was born in a small farming community of Dutch immigrants in the state of São Paulo, in southeastern Brazil. His early passion for Agriculture led him to study Agronomy in Brazil and Weed Science at Nebraska, which then brought him and his family to beautiful Wisconsin in 2018.
Rodrigo Werle - Curriculum Vitae (Updated: October 2020)
PhD in Agronomy (Weed Science), 2016
University of Nebraska-Lincoln, Lincoln, NE, USA
MS in Agronomy (Weed Science), 2012
University of Nebraska-Lincoln, Lincoln, NE, USA
BSc in Agronomy, 2009
São Paulo State University, Botucatu, SP, Brazil