Evolved resistance to glyphosate in rigid ryegrass (Lolium rigidum) in Australia

Stephen Powles, DF Lorraine-Colwill, JJ Dellow, C Preston

    Research output: Contribution to journalArticle

    304 Citations (Scopus)

    Abstract

    Following 15 yr of successful use, glyphosate failed to control a population of the widespread grass weed rigid ryegrass in Australia. This population proved to be resistant to glyphosate in pot dose-response experiments conducted outdoors, exhibiting 7- to 11-fold resistance when compared to a susceptible population. Some cross-resistance to diclofop-methyl (about 2.5-fold) was also observed. Similar levels. of control of the resistant and susceptible populations were obtained following application of amitrole, chlorsulfuron, fluazifop-P-butyl, paraquat, sethoxydim, simazine, or tralkoxydim. The presence of glyphosate resistance in a major weed species indicates a need for changes in glyphosate use patterns.
    Original languageEnglish
    Pages (from-to)604-607
    JournalWeed Science
    Volume46
    Publication statusPublished - 1998

    Fingerprint

    Lolium rigidum
    glyphosate
    Lolium
    at-risk population
    amitrole
    fluazifop-P
    sethoxydim
    chlorsulfuron
    simazine
    grass weeds
    paraquat
    cross resistance
    dose response
    weeds

    Cite this

    Powles, S., Lorraine-Colwill, DF., Dellow, JJ., & Preston, C. (1998). Evolved resistance to glyphosate in rigid ryegrass (Lolium rigidum) in Australia. Weed Science, 46, 604-607.
    Powles, Stephen ; Lorraine-Colwill, DF ; Dellow, JJ ; Preston, C. / Evolved resistance to glyphosate in rigid ryegrass (Lolium rigidum) in Australia. In: Weed Science. 1998 ; Vol. 46. pp. 604-607.
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    abstract = "Following 15 yr of successful use, glyphosate failed to control a population of the widespread grass weed rigid ryegrass in Australia. This population proved to be resistant to glyphosate in pot dose-response experiments conducted outdoors, exhibiting 7- to 11-fold resistance when compared to a susceptible population. Some cross-resistance to diclofop-methyl (about 2.5-fold) was also observed. Similar levels. of control of the resistant and susceptible populations were obtained following application of amitrole, chlorsulfuron, fluazifop-P-butyl, paraquat, sethoxydim, simazine, or tralkoxydim. The presence of glyphosate resistance in a major weed species indicates a need for changes in glyphosate use patterns.",
    author = "Stephen Powles and DF Lorraine-Colwill and JJ Dellow and C Preston",
    year = "1998",
    language = "English",
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    Powles, S, Lorraine-Colwill, DF, Dellow, JJ & Preston, C 1998, 'Evolved resistance to glyphosate in rigid ryegrass (Lolium rigidum) in Australia' Weed Science, vol. 46, pp. 604-607.

    Evolved resistance to glyphosate in rigid ryegrass (Lolium rigidum) in Australia. / Powles, Stephen; Lorraine-Colwill, DF; Dellow, JJ; Preston, C.

    In: Weed Science, Vol. 46, 1998, p. 604-607.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Evolved resistance to glyphosate in rigid ryegrass (Lolium rigidum) in Australia

    AU - Powles, Stephen

    AU - Lorraine-Colwill, DF

    AU - Dellow, JJ

    AU - Preston, C

    PY - 1998

    Y1 - 1998

    N2 - Following 15 yr of successful use, glyphosate failed to control a population of the widespread grass weed rigid ryegrass in Australia. This population proved to be resistant to glyphosate in pot dose-response experiments conducted outdoors, exhibiting 7- to 11-fold resistance when compared to a susceptible population. Some cross-resistance to diclofop-methyl (about 2.5-fold) was also observed. Similar levels. of control of the resistant and susceptible populations were obtained following application of amitrole, chlorsulfuron, fluazifop-P-butyl, paraquat, sethoxydim, simazine, or tralkoxydim. The presence of glyphosate resistance in a major weed species indicates a need for changes in glyphosate use patterns.

    AB - Following 15 yr of successful use, glyphosate failed to control a population of the widespread grass weed rigid ryegrass in Australia. This population proved to be resistant to glyphosate in pot dose-response experiments conducted outdoors, exhibiting 7- to 11-fold resistance when compared to a susceptible population. Some cross-resistance to diclofop-methyl (about 2.5-fold) was also observed. Similar levels. of control of the resistant and susceptible populations were obtained following application of amitrole, chlorsulfuron, fluazifop-P-butyl, paraquat, sethoxydim, simazine, or tralkoxydim. The presence of glyphosate resistance in a major weed species indicates a need for changes in glyphosate use patterns.

    M3 - Article

    VL - 46

    SP - 604

    EP - 607

    JO - Weed Science

    JF - Weed Science

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