Occurrence and Management of PSII-Inhibitor-Resistant Chenopodium album L. in Atlantic Canadian Potato Production

McKenzie‐Gopsill, Andrew; Graham, G. L.; Laforest, Martin; Ibarra, Sebastián; Hann, Sheldon; Wagg, Cameron

doi:10.3390/agronomy10091369

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…Resistance is defined as the inherited ability of a plant/weed to survive and reproduce following exposure to a herbicide dose that used to be lethal to the same weed species. For example, Senecio vulgaris (L.) was the first weed that showed resistance to triazine herbicides but to date, 511 unique cases of herbicide-resistant weed species have been reported globally [4,5]. These cases have increased by 14% (233 to 266) in the last 20 years.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Herbicide Resistant Weeds in Agro-ecological Systems

Chipomho

Parwada

Gwatidzo

2023

Advanced Chemicobiology Research

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Weed management through herbicides continues to be the most efficient and cost-effective component of integrated weed management (IWM) in crop production systems. However, the current production systems are characterised by intensive, inappropriate use of herbicides along with misapplication which creates selection pressure and leads to the rapid evolution of herbicide resistance in weeds. Currently, there are 511 unique cases of herbicide-resistant weed species globally, involving 266 species and these comprise 153 and 113 dicots and monocots respectively. To date, herbicide resistance has been reported from 96 crops in more than 71 countries. Furthermore, weeds have evolved resistance to 21 of the 31 known sites of herbicide action in different crops. Understanding the mechanisms of herbicide resistance is therefore essential which when coupled with the ecological and management factors that affect herbicide resistance would lead to the development of appropriate, profitable, and sustainable weed management strategies. The review is aimed at the development of herbicide resistance, mechanisms of herbicide resistance, factors that influence the rate of resistance development and management of herbicide resistance by growers.

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Section: Introductionmentioning

confidence: 99%

Evolution of Herbicide Resistant Weeds in Agro-ecological Systems

Chipomho

Parwada

Gwatidzo

2023

Advanced Chemicobiology Research

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“…Common lambsquarters has historically been controlled in potato with metribuzin and linuron. However, widespread resistance of common lambsquarters to the PSII-inhibiting herbicide metribuzin now occurs across the Atlantic Canada potato-growing region (McKenzie-Gopsill et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of crop-topping strategies to reduce common lambsquarters (Chenopodium album) seed production in potato production systems

Anderson,

White,

McKenzie-Gopsill

2023

Weed Technol

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Potato producers in Canada’s Atlantic provinces of Prince Edward Island (PE) and New Brunswick (NB) rely on photosystem II (PSII)-inhibiting herbicides to provide season-long weed control. Despite this fact, a high proportion of common lambsquarters populations in the region have been identified as resistant to this class of herbicides. Crop-topping is a late-season weed management practice that exploits the height differential between weeds and a developing crop canopy. Two field experiments were conducted in Harrington, PE, in 2020 and 2021 one each to evaluate the efficacy of a different crop-topping strategy, above-canopy mowing or wick-applied glyphosate, at two potato phenological stages, on common lambsquarters viable seed production and potato yield and quality. Mowing common lambsquarters post-flowering decreased viable seed production (72%-91%) in 2020 but increased seed production (78%-278%) in 2021. Mowing had minimal impact on potato marketable yield across cultivars in both years. In contrast, treating common lambsquarters with wick-applied glyphosate had variable impacts on seed output in 2020 but dramatically reduced seed production (up to 95%) in 2021 when treatments were applied pre-flowering. Glyphosate damage to potato tubers was not influenced by timing and resulted in a 14%-15% increase in culled tubers due to black spotting and rot. Our results highlight the importance of potato and common lambsquarters phenology when selecting a crop-topping strategy and demonstrate that above-canopy mowing and wick-applied glyphosate can be utilized for seedbank management of herbicide resistant common lambsquarters in potato production systems.

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“…Pandian et al [5] reported on the first case of TS resistance to ALS inhibitors in a Poly-gonum convolvulus population from KS, USA. McKenzie-Gopsill et al [6] described TS resistance of Chenopodium album to metribuzin, a photosystem II-inhibiting herbicide. The authors also demonstrated alternative herbicide application for weed control in the Atlantic Canadian potato agro-system to overcome the development of herbicide resistance.…”

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confidence: 99%