Searching for consistent postemergence weed control in progressively inconsistent weather
| Author(s) | Landau, Christopher | |
| Author(s) | Bradley, Kevin | |
| Author(s) | Burns, Erin | |
| Author(s) | Dobbels, Anthony | |
| Author(s) | Essman, Alyssa | |
| Author(s) | Flessner, Michael | |
| Author(s) | Gage, Karla | |
| Author(s) | Hager, Aaron | |
| Author(s) | Jhala, Amit | |
| Author(s) | Johnson, Paul O. | |
| Author(s) | Johnson, William | |
| Author(s) | Lancaster, Sarah | |
| Author(s) | Lingenfelter, Dwight | |
| Author(s) | Loux, Mark | |
| Author(s) | Miller, Eric | |
| Author(s) | Owen, Micheal | |
| Author(s) | Sarangi, Debalin | |
| Author(s) | Sikkema, Peter | |
| Author(s) | Sprague, Christy | |
| Author(s) | VanGessel, Mark | |
| Author(s) | Werle, Rodrigo | |
| Author(s) | Young, Bryan | |
| Author(s) | Williams, Martin, II | |
| Date Accessioned | 2025-01-22T19:40:34Z | |
| Date Available | 2025-01-22T19:40:34Z | |
| Publication Date | 2024-11-18 | |
| Description | This article was originally published in Weed Science. The version of record is available at: https://doi.org/10.1017/wsc.2024.80 . © Weed Science Society of America 2024. This article will be embargoed until May 18, 2025. | |
| Abstract | Foliar applied postemergence herbicides are a critical component of corn and soybean weed management programs in North America. Rainfall and air temperature around the time of application may affect the efficacy of herbicides applied postemergence in corn or soybean production fields. However, previous research utilized a limited number of site-years and may not capture the range of rainfall and air temperatures that these herbicides are exposed to throughout North America. The objective of this research was to model the probability of achieving successful weed control (≥85%) with commonly applied postemergence herbicides across a broad range of environments. A large database of over 10,000 individual herbicide evaluation field trials conducted throughout North America was used in this study. The database was filtered to include only trials with a single postemergence application of fomesafen, glyphosate, mesotrione, or fomesafen + glyphosate. Waterhemp (Amaranthus tuburculatus (Moq.) J. D. Sauer), morningglory species (Ipomoea spp.), and giant foxtail (Setaria faberi Herrm.) were the weeds of focus. Separate random forest models were created for each weed species by herbicide combination. The probability of successful weed control deteriorated when the average air temperature within the first ten d after application was <19 or >25 C for most of the herbicide by weed species models. Additionally, dryer conditions prior to postemergence herbicide application reduced the probability of successful control for several of the herbicide by weed species models. As air temperatures increase and rainfall becomes more variable, weed control with many of the commonly used postemergence herbicides is likely to become less reliable. | |
| Sponsor | This research was supported by U.S. Department of Agriculture– Agricultural Research Service Research Project No. 5012-12220- 010-000D. Mention of a trademark, proprietary product, or vendor does not constitute a guarantee or warranty of the product by the U.S. Department of Agriculture and does not imply its approval to the exclusion of other products or vendors that also may be suitable. | |
| Citation | Landau, Christopher, Kevin Bradley, Erin Burns, Anthony Dobbels, Alyssa Essman, Michael Flessner, Karla Gage, et al. “Searching for Consistent Postemergence Weed Control in Progressively Inconsistent Weather.” Weed Science, 2024, 1–22. https://doi.org/10.1017/wsc.2024.80. | |
| ISSN | 1550-2759 | |
| URL | https://udspace.udel.edu/handle/19716/35742 | |
| Language | en_US | |
| Publisher | Weed Science | |
| Keywords | climate change | |
| Keywords | foliar applied | |
| Keywords | herbicide efficacy | |
| Keywords | postemergence | |
| Keywords | weather variability | |
| Title | Searching for consistent postemergence weed control in progressively inconsistent weather | |
| Type | Article |
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