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https://doi.org/10.1614/WT-D-13-00090.1

has been cited by the following article:

• TITLE: Influence of Adjuvants on the Control of Glyphosate-Resistant Canada Fleabane and Waterhemp in Corn with Tolpyralate

  AUTHORS: Nicole M. Langdon, Nader Soltani, Alan J. Raedar, David C. Hooker, Darren E. Robinson, Peter H. Sikkema

  KEYWORDS: Biomass, Crop Injury, Density, Sensitivity, Weed Control, Yield, Amaranthus tuberculatus, Conyza canadensis L. Cronq

  JOURNAL NAME: American Journal of Plant Sciences, Vol.11 No.3, March 23, 2020

  ABSTRACT: Tolpyralate is a new benzoylpyrazole herbicide for weed management in corn. It is recommended to be co-applied with atrazine along with the adjuvants methylated seed oil concentrate (MSO) plus an ammonium nitrogen fertilizer, such as urea ammonium nitrate (UAN). Two studies were conducted on glyphosate-resistant (GR) Canada fleabane and GR waterhemp to determine if an additional adjuvant is still required when tolpyralate plus atrazine are tankmixed with a commercial glyphosate formulation (Roundup WeatherMAX®) in corn. Trials were conducted over a two-year period (2018-19) on farms in south western Ontario with confirmed GR populations. When co-applied with Roundup WeatherMAX®, the addition of MSO to tolpyralate + atrazine increased control of GR waterhemp 9%; however, there was no increase in GR Canada fleabane control from the addition of additional adjuvants. At 8 WAA, all treatments provided > 91% and > 84% control of GR waterhemp and GR Canada fleabane, respectively. This study concludes that the addition of Roundup WeatherMAX® to tolpyralate plus atrazine improves the control of GR waterhemp and GR Canada fleabane in corn.