Tolerance of Amaranthus palmeri populations from California to postemergence herbicides at various growth stages

Ríos, S.; Wright, Steven D.; Banuelos, Gerardo; Shrestha, Anil

doi:10.1016/j.cropro.2016.04.015

Cited by 7 publications

(11 citation statements)

References 18 publications

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“…It is noteworthy that untreated plants across all genotypes maintained at the high temperature were on average three times taller than those kept at the low temperature. Given the impact of plant size on glyphosate efficacy, it is likely that faster growing and bigger plants at high temperatures, rather than reduced translocation of glyphosate, has allowed a larger proportion of individuals to overcome the herbicide application here and in other similar published studies [71,72,73].…”

Section: Discussionmentioning

confidence: 80%

Evolution of Target-Site Resistance to Glyphosate in an Amaranthus palmeri Population from Argentina and Its Expression at Different Plant Growth Temperatures

Kaundun

Jackson

Hutchings

et al. 2019

Plants

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The mechanism and expression of resistance to glyphosate at different plant growing temperatures was investigated in an Amaranthus palmeri population (VM1) from a soybean field in Vicuña Mackenna, Cordoba, Argentina. Resistance was not due to reduced glyphosate translocation to the meristem or to EPSPS duplication, as reported for most US samples. In contrast, a proline 106 to serine target-site mutation acting additively with EPSPS over-expression (1.8-fold increase) was respectively a major and minor contributor to glyphosate resistance in VM1. Resistance indices based on LD50 values generated using progenies from a cross between 52 PS106 VM1 individuals were estimated at 7.1 for homozygous SS106 and 4.3 for heterozygous PS106 compared with homozygous wild PP106 plants grown at a medium temperature of 24 °C day/18 °C night. A larger proportion of wild and mutant progenies survived a single commonly employed glyphosate rate when maintained at 30 °C day/26 °C night compared with 20 °C day/16 night in a subsequent experiment. Interestingly, the P106S mutation was not identified in any of the 920 plants analysed from 115 US populations, thereby potentially reflecting the difference in A. palmeri control practices in Argentina and USA.

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Section: Discussionmentioning

confidence: 80%

Evolution of Target-Site Resistance to Glyphosate in an Amaranthus palmeri Population from Argentina and Its Expression at Different Plant Growth Temperatures

Kaundun

Jackson

Hutchings

et al. 2019

Plants

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“…Palmer amaranth escapes following glyphosate applications could be associated with the species biology, especially the extended germination period which poses a challenge for glyphosate application timing . It has been reported that glyphosate control is reduced when plants are sprayed at later growth stages . The environmental conditions of central and southwestern Nebraska (predominant Palmer amaranth area) could also influence glyphosate performance.…”

Section: Resultsmentioning

confidence: 99%

“…57 It has been reported that glyphosate control is reduced when plants are sprayed at later growth stages. 58,59 The environmental conditions of central and southwestern Nebraska (predominant Palmer amaranth area) could also influence glyphosate performance. Glyphosate efficacy is reduced in several weeds under water stress and low-humidity Pest Manag Sci 2018; 74: 2316-2324 conditions.…”

Section: Palmer Amaranth Glyphosate Dose-responsementioning

confidence: 99%

Distribution of glyphosate‐resistant Amaranthus spp. in Nebraska

Vieira

Samuelson

Alves

et al. 2018

Pest Management Science

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The intensive glyphosate selection pressure exerted in soybean (Glycine max) fields in eastern Nebraska is one of the major factors causing widespread occurrence of glyphosate resistance in common waterhemp in the state. The relatively low frequency of glyphosate-resistant Palmer amaranth in the state highlights the importance of the application timing and the adoption of multiple modes of action in weed management practices to delay the evolution of glyphosate resistance. © 2017 Society of Chemical Industry.

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“…suggested that for the management of Amaranthus palmeri a highly residual preemergence herbicide and repeated treatments with effective postemergence herbicides are required 67 . Glyphosate is more efficient against Amaranthus palmeri at early vegetative growth stages (4–6 leaves), compared to later growth stages (8–10 leaves), indicating that herbicide mixtures should be applied at the latter stages 68 . Glyphosate might also provide Amaranthus palmeri control after combination with fungicides, as revealed in soybean 69 .…”

Section: Integrated Management Of Important Ips: Two Case‐studiesmentioning

confidence: 99%

Early detection, herbicide resistance screening, and integrated management of invasive plant species: a review

Tataridas

Jabran

Kanatas

et al. 2022

Pest Management Science

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Invasive plant species (IPS) are often considered weeds that cause high yield losses in crops, negatively affect the environment, and disrupt certain ecosystem services. The negative impact of IPS on biodiversity is increasing and disturbing native vegetation. The management of plant invasions can be divided in two phases (before and after invasion). Prior to introduction it is crucial to develop the knowledge base (biology, ecology, distribution, impact, management) on IPS, prevention measures and risk assessment. After introduction if eradication fails, the monitoring and the integrated management of IPS are imperative to prevent the naturalization and further dispersal. This review uses two major invasive weed species (Amaranthus palmeri S. Wats. and Solanum elaeagnifolium Cav.) as case studies to propose a framework for early detection, rapid herbicide resistance screening, and integrated management. The holistic framework that is presented exploits recent: (i) novel detection tools, (ii) rapid tests and assays for herbicide resistance, and (iii) biology, ecology, distribution traits, and management tools for the IPS. Farmers, advisors, researchers, and policymakers need briefing on IPS growth dynamics, adaptability rates, and response to conventional and novel treatments to prevent new invasions, eradicate isolated stands, and mitigate the impact of invasive weed species in the long term.

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Tolerance of Amaranthus palmeri populations from California to postemergence herbicides at various growth stages

Cited by 7 publications

References 18 publications

Evolution of Target-Site Resistance to Glyphosate in an Amaranthus palmeri Population from Argentina and Its Expression at Different Plant Growth Temperatures

Evolution of Target-Site Resistance to Glyphosate in an Amaranthus palmeri Population from Argentina and Its Expression at Different Plant Growth Temperatures

Distribution of glyphosate‐resistant Amaranthus spp. in Nebraska

Early detection, herbicide resistance screening, and integrated management of invasive plant species: a review

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