Alternative performance targets for integrating cover crops as a proactive herbicide-resistance management tool

Bunchek, Jess M.; Wallace, John M.; Curran, William S.; Mortensen, David A.; VanGessel, Mark J.; Scott, Barbara A.

doi:10.1017/wsc.2020.49

Cited by 42 publications

(45 citation statements)

References 41 publications

(58 reference statements)

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“…However, the integration of herbicide mixtures that incorporate multiple sites of action with cover crops can help mitigate further selection of glyphosate resistance in Palmer amaranth (Amaranthus palmeri L.) [141]. Moreover, Bunchek et al [142] concluded from their study that long-run intensified cover crops could be helpful to manage herbicide resistance since it will help reduce the herbicide selection pressure.…”

Section: Cover Cropsmentioning

confidence: 99%

Crop Diversification for Improved Weed Management: A Review

et al. 2021

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Weeds are among the major constraints to any crop production system, reducing productivity and profitability. Herbicides are among the most effective methods to control weeds, and reliance on herbicides for weed control has increased significantly with the advent of herbicide-resistant crops. Unfortunately, over-reliance on herbicides leads to environmental-health issues and herbicide-resistant weeds, causing human health and ecological concerns. Crop diversification can help manage weeds sustainably in major crop production systems. It acts as an organizing principle under which technological innovations and ecological insights can be combined to manage weeds sustainably. Diversified cropping can be defined as the conscious inclusion of functional biodiversity at temporal and/or spatial levels to improve the productivity and stability of ecosystem services. Crop diversification helps to reduce weed density by negatively impacting weed seed germination and weed growth. Additionally, diversified farming systems are more resilient to climate change than monoculture systems and provide better crop yield. However, there are a few challenges to adopting a diversified cropping system, ranging from technology innovations, government policies, farm-level decisions, climate change, and market conditions. In this review, we discuss how crop diversification supports sustainable weed management, the challenges associated with it, and the future of weed management with respect to the diversification concept.

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Section: Cover Cropsmentioning

confidence: 99%

Crop Diversification for Improved Weed Management: A Review

et al. 2021

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“…However, the integration of herbicide mixtures that incorporate multiple sites of action with cover crops can help mitigate further selection of glyphosate resistance in Palmer amaranth (Amaranthus palmeri) [126]. Moreover, Bunchek et al [127] concluded from their study that long-run intensified cover crops could be helpful to manage herbicide resistance since it will help to reduce the herbicide selection pressure.…”

Section: Cover Cropsmentioning

confidence: 99%

Crop Diversification for Improved Weed Management: A Review

Sharma¹,

Shrestha²,

Kunwar³

et al. 2021

Preprint

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Weeds are among the major constraints to any crop production system, reducing productivity and profitability. Herbicides are among the most effective methods to control weeds, and reliance on herbicides for weed control has increased significantly with the advent of herbicide-resistant crops. Unfortunately, over-reliance on herbicides leads to environmental-health issues and herbicide-resistant weeds, causing human-health and ecological concerns. Crop diversification can help manage weeds sustainably in major crop production systems. It acts as an organizing principle under which technological innovations and ecological insights can be combined to manage weeds sustainably. Diversified cropping can be defined as the conscious inclusion of functional biodiversity at temporal and/or spatial levels to improve the productivity and stability of ecosystem services. Crop diversification helps to reduce weed density by negatively impacting weed seed germination and weed growth. Additionally, diversified farming systems are more resilient to climate change than monoculture systems and provide better crop yield. However, there are a few challenges to adopting a diversified cropping system, which ranges from technology innovations, government policies, farm-level decisions, climate change, and market conditions. In this review, we discuss how crop diversification supports sustainable weed management, the challenges associated with it, and the future of weed management with respect to the diversification concept.

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“…Cover crops improve soil stabilization (Hartwig and Ammon 2002;Sanders et al 2018), water infiltration (Hartwig and Ammon 2002), soil water holding capacity (Echtenkamp and Moomaw 1989), soil organic matter (Cherr et al 2006), and soil nitrogen when legumes are used (Andrews et al 2018;Cherr et al 2006;Sanders et al 2017), and lead to the diversification of soil microbial communities (Vukicevich et al 2016). In addition to these soil health benefits, cover crops also reduce weed emergence and growth, providing an additional benefit for managing herbicide-resistant weeds and mitigate further development of resistance (Bunchek et al 2020;Hand et al 2019;Teasdale et al 2007). Although annual cover crops are typically planted, other researchers have proposed intercropping or use of a living mulch (Affeldt et al 2004;Andrews et al 2018;Hiltbrunner et al 2007;Pedersen et al 2009;Sanders et al 2017Sanders et al , 2018.…”

Section: Introductionmentioning

confidence: 99%

Establishing white clover (Trifolium repens) as a living mulch: weed control and herbicide tolerance

Basinger

Hill

2021

Weed Technol

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With the increasing focus on herbicide-resistant weeds and the lack of introduction of new modes of action, many producers have turned to annual cover crops as a tool for reducing weed populations. Recent studies have suggested that perennial cover crops such as white clover could be used as living mulch. However, white clover is slow to establish and is susceptible to competition from winter weeds. Therefore, the objective of this study was to determine clover tolerance and weed control in established stands of white clover to several herbicides. Studies were conducted in the fall and winter of 2018 to 2019 and 2019 to 2020 at the J. Phil Campbell Research and Education Center in Watkinsville, GA, and the Southeast Georgia Research and Education Center in Midville, GA. POST applications of imazethapyr, bentazon, or flumetsulam at low and high rates, or in combination with 2,4-D and 2,4-DB, were applied when clover reached 2 to 3 trifoliate stage. Six weeks after the initial POST application, a sequential application of bentazon and flumetsulam individually, and combinations of 2,4-D, 2,4-DB, and flumetsulam were applied over designated plots. Clover biomass was similar across all treatments except where it was reduced by sequential applications of 2,4-D + 2,4-DB + flumetsulam in the 2019 to 2020 season indicating that most treatments were safe for use on establishing living mulch clover. A single application of flumetsulam at the low rate or a single application of 2,4-D + 2,4-DB provided the greatest control of all weed species while minimizing clover injury when compared to the non-treated check. These herbicide options allow for control of problematic winter weeds during clover establishment, maximizing clover biomass and limiting canopy gaps that would allow for summer weed emergence.

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Alternative performance targets for integrating cover crops as a proactive herbicide-resistance management tool

Cited by 42 publications

References 41 publications

Crop Diversification for Improved Weed Management: A Review

Crop Diversification for Improved Weed Management: A Review

Crop Diversification for Improved Weed Management: A Review

Establishing white clover (Trifolium repens) as a living mulch: weed control and herbicide tolerance

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