Does the tolerance of weeds to herbicide change with elevated levels of CO2?

Paul Downey, Tanya Lenz, William Sea, P Waryszak, Michelle Leishman

    Research output: A Conference proceeding or a Chapter in BookConference contribution

    Abstract

    The level of carbon dioxide (CO2) in the atmosphere has increased substantially over the past 100 years and is predicted to continue rising over the coming decades. Whilst this change has contributed significantly to the problem of global climate change, CO2 is important for plants, specifically during the process of photosynthesis; although high levels of CO2 may be detrimental to some plants. Thus it is important to understand how future elevated levels of CO2 may affect both native and non-native plants. The response of plants to elevated levels of CO2 include: increased (i) biomass, (ii) height, (iii) inter-nodal length, (iv) pollen production, (v) woodiness due to assimilation of additional carbon, and (vi) water use efficiency due to reduced stomatal conductance. Many of these altered attributes may affect the species survival in a warmer world. They could also affect herbicide efficiency either through uptake rates of the active ingredient or by increased biomass which enables plants to better withstand the effective of the herbicide.
    Original languageEnglish
    Title of host publication18th Australasian Weeds Conference: Developing Solutions to Evolving Weed Problems
    EditorsValerie Eldershaw
    Place of PublicationAustralia
    PublisherWeed Society of Victoria Inc.
    Pages273-274
    Number of pages2
    ISBN (Print)9780646586700
    Publication statusPublished - 2012
    Event18th Australasian Weeds Conference - Melbourne, Melbourne, Australia
    Duration: 8 Oct 201211 Oct 2012

    Conference

    Conference18th Australasian Weeds Conference
    CountryAustralia
    CityMelbourne
    Period8/10/1211/10/12

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  • Cite this

    Downey, P., Lenz, T., Sea, W., Waryszak, P., & Leishman, M. (2012). Does the tolerance of weeds to herbicide change with elevated levels of CO2? In V. Eldershaw (Ed.), 18th Australasian Weeds Conference: Developing Solutions to Evolving Weed Problems (pp. 273-274). Weed Society of Victoria Inc.. http://caws.org.nz/old-site/awc/2012/awc201212731.pdf