Preemergence Herbicides for Potential Use in Potato Production

Boydston, Rick A.; Felix, Joel; Al‐Khatib, Kassim

doi:10.1614/wt-d-12-00023.1

Cited by 13 publications

(13 citation statements)

References 18 publications

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“…and velvetleaf (Abutilon theophrasti Medic.) (Knezevic et al 2009;Boydston et al 2012;Anonymous 2013;Mahoney et al 2014a). Efficacious weed control using pyroxasulfone has been reported; however, the degree of control is dependent upon the weed species present (Nurse et al 2011).…”

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confidence: 99%

Weed control in soybean using pyroxasulfone and sulfentrazone

2015

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. 2015. Weed control in soybean using pyroxasulfone and sulfentrazone. Can. J. Plant Sci. 95: 1199Á1204. Pyroxasulfone and sulfentrazone are new herbicides currently being evaluated for weed control in soybean [Glycine max (L.) Merr.] in Ontario, Canada. Seven experiments were conducted over a 3-yr period (2011 to 2013) at Ridgetown and Exeter, Ontario, to evaluate weed management using pyroxasulfone, sulfentrazone and their tank-mixes relative to the industry standard, imazethapyr plus metribuzin. Tank-mixing pyroxasulfone and sulfentrazone provided up to 97, 46, 60, 100 and 71% control of common lambsquarters (Chenopodium album L.), common ragweed (Ambrosia artemisiifolia L.), green foxtail [Setaria viridis (L.) Beauv.], Powell amaranth [Amaranthus powellii (S.) Wats.] and velvetleaf (Abutilon theophrasti Medic.), respectively, at 2 wk after treatment. Control with pyroxasulfone and sulfentrazone was improved when tank-mixed, relative to application of each herbicide separately. Although control was variable across weed species, no difference in control was identified between pyroxasulfone plus sulfentrazone and imazethapyr plus metribuzin. Soybean yield was up to 2.7, 2.4 and 2.9 t ha(1 for pyroxasulfone, sulfentrazone and pyroxasulfone plus sulfentrazone application, yet imazethapyr plus metribuzin provided the highest yield (3.3 t ha(1 ). This research demonstrates that pyroxasulfone plus sulfentrazone may be used as a valuable weed control option in soybean; however, weed community composition may limit herbicidal utility.

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Weed control in soybean using pyroxasulfone and sulfentrazone

2015

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“…Soil texture can affect herbicide availability and leaching potential. Kinsella, while similar in organic matter content to Kernen, had a higher proportion of sand (55%), possibly providing better drainage and/or herbicide removal by leaching, as has been previously suggested (Boydston et al 2012). Soil properties also affected wild oat efficacy.…”

Section: Resultsmentioning

confidence: 65%

“…However, on high organic matter soils, sweet corn displayed no injury at rates up to 1000 g ha À1 (Odero and Wright 2013). Potato (Solanum tuberosum L.) also showed tolerance to pyroxasulfone at rates up to 150 g ha À1 with minor injury, yield reduction, and quality losses (Boydston et al 2012). Pyroxasulfone at 125 g ha À1 caused unacceptable yield losses in barley (Hordeum vulgare L.) as well as durum wheat and oat (Avena sativa L.) in Ontario (Soltani et al 2012).…”

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Efficacy of Fall- and Spring-Applied Pyroxasulfone For Herbicide-Resistant Weeds in Field Pea

et al. 2014

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Field trials were initiated in fall 2011 to determine the potential of pyroxasulfone to control acetolactate synthase (ALS) inhibitor-resistant weeds in field pea. Pyroxasulfone was applied in split-plot trials at five locations in western Canada using fall and PRE spring applications of 0 to 400 g ai ha−1. Trial locations were chosen with a range of soil organic matter content: 2.9, 4.3, 5.5, 10.5, and 10.6% at Scott, Kernen, Kinsella, Melfort, and Ellerslie, respectively. The herbicide dose required to reduce biomass by 50% (ED50) in false cleavers ranged between 53 and 395 g ha−1at Scott and Ellerslie, respectively. Wild oat ED50s varied between 0.54 g ha−1at Scott in the fall and 410 g ai ha−1in the spring at Melfort. ED50s for wild oat and false cleavers varied by 7.4- and 746-fold, respectively, depending primarily on the organic matter content at the trial location. The effect of application timing was not consistent. Significant yield reductions and pea injury occurred at 150 and 100 g ha−1and higher at Kernen and Scott, respectively. Low organic matter and high precipitation levels at these locations indicates increased herbicide activity under these conditions. Pyroxasulfone may allow control of ALS inhibitor-resistant false cleavers and wild oat; however, locations with high soil organic matter will require higher rates than those with low organic matter for similar control levels.

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“…Common lambsquarters (Chenopodium album L.) is a highly competitive, cosmopolitan weed of significant economic importance in wide variety of crops. Yield losses in potato due to competition with common lambsquarters have been reported to approach 85% due to reductions in tuber weight and quality [8,9]. PSII-inhibitor-resistant common lambsquarters populations have been documented since 1971 [10] and are now reported in 20 countries worldwide [4].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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Potato producers in the Atlantic Canadian provinces of New Brunswick (NB) and Prince Edward Island (PE) rely on the photosystem II-inhibiting herbicide metribuzin for weed management. Recently, potato producers in the region have reported unacceptable common lambsquarters control following an application of metribuzin. Tissue and seed samples were collected from escaped common lambsquarters populations from across the potato producing regions of NB and PE and screened for the Ser264Gly mutation in psbA. Overall, 46% of sampled populations possessed the Ser264Gly mutation across the region. Cross-resistance testing to atrazine, metribuzin and linuron confirmed populations with the Ser264Gly were resistant to triazines and triazinones but remained susceptible to linuron. Dose response analysis determined a moderate level of resistance to metribuzin in common lambsquarters which would not be controlled in producers fields. A field experiment was conducted in Fredericton, NB and Harrington, PE, to determine if currently registered and unregistered products and tank-mixes would control PSII-inhibitor-resistant common lambsquarters in potato. All evaluated products, with the exception of S-metolachlor, provided control equivalent to the weed-free check without compromising potato yield or quality. This study demonstrates that PSII-inhibitor-resistant common lambsquarters are found in Atlantic Canadian potato production systems, but can be controlled with currently registered herbicides and rates with alternative modes of action.

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Preemergence Herbicides for Potential Use in Potato Production

Cited by 13 publications

References 18 publications

Weed control in soybean using pyroxasulfone and sulfentrazone

Weed control in soybean using pyroxasulfone and sulfentrazone

Efficacy of Fall- and Spring-Applied Pyroxasulfone For Herbicide-Resistant Weeds in Field Pea

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

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