Rapid increase in glyphosate resistance and confirmation of dicamba-resistant kochia (Bassia scoparia) in Manitoba

Charles M. Geddes; Mattea M. Pittman; Robert H. Gulden; Tammy Jones; Julia Y. Leeson; Shaun M. Sharpe; Scott W. Shirriff; Hugh J. Beckie

doi:10.1139/cjps-2021-0169

Rapid increase in glyphosate resistance and confirmation of dicamba-resistant kochia (Bassia scoparia) in Manitoba

Charles M. Geddes, Mattea M. Pittman, Robert H. Gulden, Tammy Jones, Julia Y. Leeson, Shaun M. Sharpe, Scott W. Shirriff, Hugh J. Beckie

Research output: Contribution to journal › Article › peer-review

7 Citations (Web of Science)

Abstract

Increased adoption of crops with stacked traits conferring glyphosate and dicamba resistance, and recent confirmation of kochia [Bassia scoparia (L.) A.J. Scott] biotypes resistant to these herbicides in Alberta and Saskatchewan, warrant surveillance of herbicide-resistant kochia in Manitoba. A randomized–stratified survey of 315 sites in Manitoba was conducted in the fall of 2018. Overall, 58% of the kochia populations tested were glyphosate-resistant, while 1% were dicamba-resistant. This survey documents rapid increase in glyphosate-resistant kochia over a five-year time frame, and also confirms the first cases of kochia in Manitoba with dicamba resistance alone and in combination with glyphosate resistance.

Original language	English
Pages (from-to)	459-464
Number of pages	6
Journal	Canadian Journal of Plant Science
Volume	102
Issue number	2
DOIs	https://doi.org/10.1139/cjps-2021-0169
Publication status	Published - 2022
Externally published	Yes

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10.1139/cjps-2021-0169Licence: CC BY

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title = "Rapid increase in glyphosate resistance and confirmation of dicamba-resistant kochia (Bassia scoparia) in Manitoba",

abstract = "Increased adoption of crops with stacked traits conferring glyphosate and dicamba resistance, and recent confirmation of kochia [Bassia scoparia (L.) A.J. Scott] biotypes resistant to these herbicides in Alberta and Saskatchewan, warrant surveillance of herbicide-resistant kochia in Manitoba. A randomized–stratified survey of 315 sites in Manitoba was conducted in the fall of 2018. Overall, 58% of the kochia populations tested were glyphosate-resistant, while 1% were dicamba-resistant. This survey documents rapid increase in glyphosate-resistant kochia over a five-year time frame, and also confirms the first cases of kochia in Manitoba with dicamba resistance alone and in combination with glyphosate resistance.",

keywords = "gene flow, herbicide resistance, surveillance, survey, synthetic auxin",

author = "Geddes, {Charles M.} and Pittman, {Mattea M.} and Gulden, {Robert H.} and Tammy Jones and Leeson, {Julia Y.} and Sharpe, {Shaun M.} and Shirriff, {Scott W.} and Beckie, {Hugh J.}",

note = "Funding Information: This research was supported by the Alberta Wheat Commission, Manitoba Crop Alliance, Manitoba Pulse and Soybean Growers, Saskatchewan Canola Development Commission, Saskatchewan Pulse Crop Development Board, and Western Grains Research Foundation through Agriculture and Agri-Food Canada project J-001934. Publisher Copyright: {\textcopyright} Agricultural Institute of Canada. All rights reserved.",

year = "2022",

doi = "10.1139/cjps-2021-0169",

language = "English",

volume = "102",

pages = "459--464",

journal = "Canadian Journal of Plant Science",

issn = "0008-4220",

publisher = "Agricultural Institute of Canada",

number = "2",

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TY - JOUR

T1 - Rapid increase in glyphosate resistance and confirmation of dicamba-resistant kochia (Bassia scoparia) in Manitoba

AU - Geddes, Charles M.

AU - Pittman, Mattea M.

AU - Gulden, Robert H.

AU - Jones, Tammy

AU - Leeson, Julia Y.

AU - Sharpe, Shaun M.

AU - Shirriff, Scott W.

AU - Beckie, Hugh J.

N1 - Funding Information: This research was supported by the Alberta Wheat Commission, Manitoba Crop Alliance, Manitoba Pulse and Soybean Growers, Saskatchewan Canola Development Commission, Saskatchewan Pulse Crop Development Board, and Western Grains Research Foundation through Agriculture and Agri-Food Canada project J-001934. Publisher Copyright: © Agricultural Institute of Canada. All rights reserved.

PY - 2022

Y1 - 2022

N2 - Increased adoption of crops with stacked traits conferring glyphosate and dicamba resistance, and recent confirmation of kochia [Bassia scoparia (L.) A.J. Scott] biotypes resistant to these herbicides in Alberta and Saskatchewan, warrant surveillance of herbicide-resistant kochia in Manitoba. A randomized–stratified survey of 315 sites in Manitoba was conducted in the fall of 2018. Overall, 58% of the kochia populations tested were glyphosate-resistant, while 1% were dicamba-resistant. This survey documents rapid increase in glyphosate-resistant kochia over a five-year time frame, and also confirms the first cases of kochia in Manitoba with dicamba resistance alone and in combination with glyphosate resistance.

AB - Increased adoption of crops with stacked traits conferring glyphosate and dicamba resistance, and recent confirmation of kochia [Bassia scoparia (L.) A.J. Scott] biotypes resistant to these herbicides in Alberta and Saskatchewan, warrant surveillance of herbicide-resistant kochia in Manitoba. A randomized–stratified survey of 315 sites in Manitoba was conducted in the fall of 2018. Overall, 58% of the kochia populations tested were glyphosate-resistant, while 1% were dicamba-resistant. This survey documents rapid increase in glyphosate-resistant kochia over a five-year time frame, and also confirms the first cases of kochia in Manitoba with dicamba resistance alone and in combination with glyphosate resistance.

KW - gene flow

KW - herbicide resistance

KW - surveillance

KW - survey

KW - synthetic auxin

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DO - 10.1139/cjps-2021-0169

M3 - Article

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VL - 102

SP - 459

EP - 464

JO - Canadian Journal of Plant Science

JF - Canadian Journal of Plant Science

SN - 0008-4220

IS - 2

ER -

Rapid increase in glyphosate resistance and confirmation of dicamba-resistant kochia (Bassia scoparia) in Manitoba

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