Control of acetolactate synthase inhibitor/glyphosate-resistant Palmer amaranth (<i>Amaranthus palmeri</i>) in isoxaflutole/glufosinate/glyphosate-resistant soybean

Mausbach, Jasmine; Irmak, Suat; Sarangi, Debalin; Lindquist, John L.; Jhala, Amit J.

doi:10.1017/wet.2021.49

Cited by 6 publications

(14 citation statements)

References 46 publications

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“…In crops such as corn, a major contributor to diversifying herbicide SOAs can be attributed to commonly used PRE and POST herbicides being premixes of different SOAs (Table 6). Similarly in soybean, use of a PRE herbicide with multiple effective SOAs is required as a foundation for the early season management of multiple herbicide‐resistant Palmer amaranth (Mausbach et al., 2021).…”

Section: Resultsmentioning

confidence: 99%

A follow‐up survey to assess stakeholders’ perspectives on weed management challenges and current practices in Nebraska, USA

McDonald,

Sarangi,

Rees

et al. 2023

Agrosystems Geosci & Env

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Stakeholders across the state of Nebraska, USA, were surveyed in 2019–2020 to assess problem weeds and weed management practices in agronomic crops. A total of 420 complete responses were obtained across four Nebraska districts (Northeast, Panhandle, Southeast, and West Central). Accumulated across the state, 65.5% of farmed or scouted crop ground in Nebraska was under no‐till production, with the major crops being corn and soybean representing 39.3% and 30.7% of agronomic crop production area, respectively. Palmer amaranth, horseweed, waterhemp, kochia, and giant ragweed were ranked the most problematic weeds. In a 2014–2015 survey, Palmer amaranth was the sixth most problematic weed. The most used preplant herbicides were 2,4‐D, glyphosate, and dicamba in the 2019–2020 survey. Atrazine applied alone or in mixture with acetochlor, bicyclopyrone, clopyralid, mesotrione, or S‐metolachlor were the most applied pre‐emergence (PRE) herbicides in corn, whereas the most applied PRE herbicides in soybean were metribuzin/sulfentrazone, flumioxazin/pyroxasulfone, and chloransulam‐methyl/sulfentrazone. Like the previous survey, glyphosate was the most frequent choice of survey respondents as a post‐emergence (POST) herbicide in glyphosate‐resistant corn and soybean, while 2,4‐D was the most applied POST herbicide in grain sorghum and wheat. Most of the respondents (77%) were aware of the new multiple herbicide‐resistant crops, and 86% listed physical drift and volatility of dicamba/2,4‐D as a primary concern. Twenty‐three percent of survey respondents identified integrated pest management as a primary research and extension priority for profitable agronomic crop production in Nebraska.

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Section: Resultsmentioning

confidence: 99%

A follow‐up survey to assess stakeholders’ perspectives on weed management challenges and current practices in Nebraska, USA

McDonald,

Sarangi,

Rees

et al. 2023

Agrosystems Geosci & Env

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“…It is a selective herbicide primarily used for PRE control of grass and broadleaf weeds in corn, and recently in isoxaflutole-resistant soybean (Mausbach et al 2021). Isoxaflutole is commonly mixed with PS II-inhibiting herbicides (e.g., atrazine) to improve weed control efficacy and spectrum (Benoit et al 2019;Fluttert et al 2022).…”

Section: Isoxaflutolementioning

confidence: 99%

“…Siehl et al (2014) developed transgenic soybean that is resistant to isoxaflutole, mesotrione, and tembotrione with increased selectivity and a wide spectrum of weed control. In addition, isoxaflutole-resistant soybean has been developed and is available for commercial cultivation in the United States; however, its adoption is limited due to restriction in use of isoxaflutole (Alite 27) in certain counties in states such as Nebraska (Mausbach et al 2021).…”

Section: Future Of Hppd-inhibitor-resistant Cropsmentioning

confidence: 99%

“…Common brand names include Balance Flexx™ and Corvus ™ , and were the first HPPD-inhibiting herbicides introduced in North America in 1996 (Figure 1; Pallett et al 1998). It is a selective herbicide primarily used for PRE control of grass and broadleaf weeds in corn, and recently in isoxaflutole-resistant soybean (Mausbach et al 2021). Isoxaflutole is commonly mixed with PS II-inhibiting herbicides (e.g., atrazine) to improve weed control efficacy and spectrum (Benoit et al 2019; Chahal and Jhala 2018a; Fluttert et al 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Isoxaflutole can also be used for weed control in fallow fields depending on the subsequent rotational crop (Currie and Geier 2016; Kumar and Jha 2015). In this context, isoxaflutole-resistant soybean has recently been developed in which isoxaflutole can be used as a part of an herbicide strategy to control ALS- and glyphosate-resistant weeds, including Palmer amaranth, waterhemp, and Canada fleabane ( Erigeron canadensis L.; Ditschun et al 2016; Mausbach et al 2021; Smith et al 2019a).…”

Section: Introductionmentioning

confidence: 99%

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4-Hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicides: past, present, and future

et al. 2022

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The 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicides are primarily used for weed control in corn, barley, oat, rice, sorghum, sugarcane, and wheat production fields in the United States. The objectives of this review were to summarize (1) the history of HPPD-inhibitor and their use in the United States, (2) HPPD-inhibitor resistant weeds, their mechanism of resistance, and management, (3) interaction of HPPD-inhibitor with other herbicides, and (4) the future of HPPD-inhibitor-resistant crops. As of 2022, three broadleaf weeds (Palmer amaranth, waterhemp, and wild radish) have evolved resistance to the HPPD-inhibitor. The predominance of metabolic resistance to HPPD-inhibitor was found in aforementioned three weed species. Management of HPPD-inhibitor-resistant weeds can be accomplished using alternate herbicides such as glyphosate, glufosinate, 2,4-D, or dicamba; however, metabolic resistance poses a serious challenge, as the weeds may be cross-resistant to other herbicide sites of action, leading to limited herbicide options. The HPPD-inhibitor is commonly applied with photosystem II (PS II)-inhibitor to increase efficacy and weed control spectrum. The synergism with HPPD-inhibitor arises from depletion of plastoquinones, which allows increased binding of PS II-inhibitor to the D1 protein. New HPPD-inhibitor from azole carboxamides class is in development and expected to be available in the near future. The HPPD-inhibitor-resistant crops have been developed through overexpression of a resistant bacterial HPPD enzyme in plants and the overexpression of transgenes for HPPD and a microbial gene that enhances the production of HPPD substrate. Isoxaflutole-resistant soybean is commercially available, and it is expected that soybean resistant to other HPPD-inhibitor such as mesotrione, stacked with resistance to other herbicides, will be available in the near future.

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Comparison of residual activity of pre‐emergence herbicides for control and seed production of multiple herbicide‐resistant Palmer amaranth in food‐grade white corn

Kaur,

Chahal,

Shi

et al. 2024

Agrosystems Geosci & Env

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Nebraska is the number‐one producer of food‐grade white corn (Zea mays L.) in the United States. Food‐grade white corn has not been genetically engineered; therefore, non‐selective herbicides such as glyphosate or glufosinate cannot be used. Multiple herbicide‐resistant (MHR) Palmer amaranth (Amaranthus palmeri S. Watson) populations have been reported in multiple counties in Nebraska, and their management is a challenge, particularly for white corn producers. The objectives of this study were to evaluate the residual activity of pre‐emergence (PRE) herbicides for acetolactate synthase inhibitor (halosulfuron‐methyl)/atrazine/glyphosate‐resistant Palmer amaranth control, density, biomass, seed production, and grain yield in food‐grade white corn. Field experiments were conducted during summer 2020 and 2021 in a grower's field infested with MHR Palmer amaranth near Carleton, NE. All the PRE herbicides resulted in similar control (>90%) 30 days after PRE application (DAPRE) apart from atrazine (64%). At 45 DAPRE, acetochlor/mesotrione, atrazine/bicyclopyrone/mesotrione/S‐metolachlor, and acetochlor/clopyralid/mesotrione controlled 90%–95% Palmer amaranth. Acetochlor/clopyralid/mesotrione and atrazine/bicyclopyrone/mesotrione/S‐metolachlor provided 96%–99% MHR Palmer amaranth control and reduced Palmer amaranth density and biomass to 2–4 plants m−2 and 5–12 g m−2 60 DAPRE. The highest corn yields of 12,139 kg ha−1 and 12,093 kg ha−1 in 2020 and 2021, respectively, were obtained with acetochlor/clopyralid/mesotrione. Palmer amaranth seed production was least with acetochlor/clopyralid/mesotrione (32,894 seeds m−2). Tested residual PRE herbicides did not show corn injury and were safe to use in food‐grade white corn. It is concluded that acetochlor/clopyralid/mesotrione and atrazine/bicyclopyone/mesotrione/S‐metolachlor are the best options for early season control of MHR Palmer amaranth in food‐grade white corn.

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Control of acetolactate synthase inhibitor/glyphosate-resistant Palmer amaranth (Amaranthus palmeri) in isoxaflutole/glufosinate/glyphosate-resistant soybean

Cited by 6 publications

References 46 publications

A follow‐up survey to assess stakeholders’ perspectives on weed management challenges and current practices in Nebraska, USA

A follow‐up survey to assess stakeholders’ perspectives on weed management challenges and current practices in Nebraska, USA

4-Hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicides: past, present, and future

Comparison of residual activity of pre‐emergence herbicides for control and seed production of multiple herbicide‐resistant Palmer amaranth in food‐grade white corn

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