Marcelo Zimmer
Marcelo Zimmer is originally from a small family farm in southern Brazil and received his Bachelor’s degree in Agronomy in 2014 from the Federal University of Pelotas (Brazil). In 2015, Marcelo joined the Purdue Weed Science Lab as a Master's student under the supervision of Dr. Bill Johnson, where he researched the management of glyphosate-resistant horseweed utilizing a new herbicide active ingredient from Dow AgroSciences [halauxifen-methyl (Elevore)], graduating in 2017. Currently, Marcelo works as a Weed Science Program Specialist, while also pursuing a Ph.D. degree in Weed Science. His research is investigating the basis for the antagonism of synthetic auxins (2,4-D and dicamba) on the control of volunteer corn using ACCase-inhibiting herbicides (clethodim and quizalofop). His research is also addressing the use of new site-specific herbicide application technologies (See and Spray Ultimate) to resolve herbicide antagonism issues.
Awards and Honors
1st Place Farmer Problem Solving - WSSA National Weed Science Student Contest (2023)
1st Place Graduate Individual - NCWSS Weed Science Student Contest (2023)
1st Place Written Calibration - NCWSS Weed Science Student Contest (2023)
1st Place Poster Contest – Clethodim Antagonism From Dicamba on Volunteer Corn Control in Soybean was Resolved By Using a Dual Tank/Boom Sprayer – WSSA Meeting (2023)
1st Place Poster Contest – A Dual Tank/Boom Sprayer Reduced the Antagonism of Clethodim From Dicamba on Volunteer Corn Control in Soybean – NCWSS Meeting (2022)
1st Place Paper Contest – Antagonism of Group 4 and 15 Herbicides on Volunteer Corn Control with Clethodim – NCWSS Meeting (2021)
2nd Place Paper Contest – Does Ammonium Thiosulfate Antagonize Glyphosate for Spring Burndown Applications? – NCWSS meeting (2019)
1st Place Weed Identification – NCWSS Weed Science Contest (2019)
1st Place Graduate Individual – NCWSS Weed Contest (2018)
3rd Place Graduate Individual – NCWSS Weed Science Contest (2017)
1st Place Poster Contest – Efficacy of Halauxifen-Methyl Herbicide Programs for Management of Glyphosate-Resistant Horseweed (Conyza canadensis L.) in Soybean - NCWSS Meeting (2016)
2nd Place Paper Contest – Evaluation of 2,4-D, Dicamba, Glyphosate, and Halauxifen-Methyl Tank-Mixtures on Broadleaf Weeds – NCWSS Meeting (2016)
Selected Publications
DeSimini, S. A., Gibson, K. D., Armstrong, S. D., Zimmer, M., Maia, Lucas O. R., & Johnson, W. G. (2020). Effect of cereal rye and canola on winter and summer annual weed emergence in corn. WEED TECHNOLOGY, 34(6), pp. 787-793. View Publication
Gerber, C. K., Ackerson, J. P., Brouder, S. M., Camberato, J. J., Casteel, S. N., Creswell, T. C., ... Zimmer, M. (2020). Corn and Soybean Field Guide 2020. (p. 312).
Zimmer, M., Young, B. G., & Johnson, W. G. (2019). Halauxifen-methyl preplant intervals and environmental conditions in soybean. Weed Technology, 33(5), pp. 680-685. View Publication
Zimmer, M., Hayden, N. C., Whitford, F., Young, B. G., & Johnson, W. G. (2019). Differentiating 2, 4-D and Dicamba Injury on Soybeans. (p. 8). View Publication
Zimmer, M., Young, B. G., & Johnson, W. G. (2018). Herbicide Programs Utilizing Halauxifen-Methyl for Glyphosate-Resistant Horseweed (Conyza canadensis) Control in Soybean. WEED TECHNOLOGY, 32(6), pp. 659-664. View Publication
Zimmer, M., Young, B. G., & Johnson, W. G. (2018). Weed Control with Halauxifen-Methyl Applied Alone and in Mixtures with 2,4-D, Dicamba, and Glyphosate. WEED TECHNOLOGY, 32(5), pp. 597-602. View Publication
