Influence of glyphosate/dicamba application rate and timing on the control of glyphosate-resistant waterhemp in glyphosate/dicamba-resistant soybean

Brittany K. Hedges; Nader Soltani; Darren E. Robinson; David C. Hooker; Peter H. Sikkema

doi:10.1139/cjps-2018-0101

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Brittany K. Hedges,¹ Nader Soltani,^1,* Darren E. Robinson,^1,** David C. Hooker,¹ Peter H. Sikkema¹

¹University of Guelph Ridgetown Campus, Ridgetown, ON N0P 2C0, Canada.

^*Corresponding author: Nader Soltani (email: soltanin@uoguelph.ca).
^**D.E. Robinson currently serves as an Associate Editor; peer review and editorial decisions regarding this manuscript were handled by Amit Jhala.

Abstract

The objective of this study was to determine the effect of premixed glyphosate/dicamba application timing and rate on glyphosate-resistant (GR) waterhemp control. Glyphosate/dicamba applied to 5-, 15-, and 25-cm-tall plants, controlled GR waterhemp 81%, 73%, and 61% at 2 wk after application (WAA) and 61%, 68%, and 72% at 8 WAA, respectively.

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Citation Download Citation

Brittany K. Hedges, Nader Soltani, Darren E. Robinson, David C. Hooker, and Peter H. Sikkema "Influence of glyphosate/dicamba application rate and timing on the control of glyphosate-resistant waterhemp in glyphosate/dicamba-resistant soybean," Canadian Journal of Plant Science 99(3), 371-374, (4 March 2019). https://doi.org/10.1139/cjps-2018-0101

Received: 24 April 2018; Accepted: 9 October 2018; Published: 4 March 2019