The importance of time of spraying, desiccant type and harvest time in stand-retted fibre flax: Industrial fibre production

Sarita Bennett, D Wright, G Edwards-Jones

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Even and successful retting of flax through application of a desiccating herbicide and stand-retting is a major constraint to increasing its incorporation in industrial products. With the release of a new form of glyphosate based on the isopropylamine (IPA) salt with biactivator (Roundup Biactive, Monsanto Ltd), a field trial was planted using three flax varieties with differing levels of ease of desiccation at the Henfacs Research Centre, University of Wales Bangor in 2004. The crop was sprayed at four different times of maturity: mid-point of flowering plus 7 days (MPF + 7), MPF + 14, MPF + 21 or MPF + 28 using two different herbicide treatments; Roundup Biactive (Monsanto PLC) or Roundup Biactive + Restore (40% ammonium sulphate, AmegA Sciences PLC). Fibre quality was assessed following retting and the ease of decortication was measured. The highest fibre yields were obtained from the MPF + 28 spray date, and from the Biactive herbicide treatment. Although lower yields were recorded with the Biactive+Restore treatment, the stems were easier to decorticate. It is suggested that an early sowing date and the use of the IPA salt-based glyphosate with biactivator, and careful monitoring of the crop during the retting process, contributed to the early and successful harvest from the MPF + 28 plots, allowing mature seeds as well as fibre to be harvested from the flax plants.
    Original languageEnglish
    Pages (from-to)565-576
    JournalJournal of Agricultural Science
    Volume145
    DOIs
    Publication statusPublished - 2007

    Fingerprint

    glyphosate
    Hygroscopic Agents
    retting
    desiccants
    Flax
    flax
    spraying
    Herbicides
    herbicides
    salts
    Salts
    fiber quality
    Linum usitatissimum
    desiccation (plant physiology)
    Wales
    crops
    sowing date
    Desiccation
    ammonium sulfate
    pesticide application

    Cite this

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    title = "The importance of time of spraying, desiccant type and harvest time in stand-retted fibre flax: Industrial fibre production",
    abstract = "Even and successful retting of flax through application of a desiccating herbicide and stand-retting is a major constraint to increasing its incorporation in industrial products. With the release of a new form of glyphosate based on the isopropylamine (IPA) salt with biactivator (Roundup Biactive, Monsanto Ltd), a field trial was planted using three flax varieties with differing levels of ease of desiccation at the Henfacs Research Centre, University of Wales Bangor in 2004. The crop was sprayed at four different times of maturity: mid-point of flowering plus 7 days (MPF + 7), MPF + 14, MPF + 21 or MPF + 28 using two different herbicide treatments; Roundup Biactive (Monsanto PLC) or Roundup Biactive + Restore (40{\%} ammonium sulphate, AmegA Sciences PLC). Fibre quality was assessed following retting and the ease of decortication was measured. The highest fibre yields were obtained from the MPF + 28 spray date, and from the Biactive herbicide treatment. Although lower yields were recorded with the Biactive+Restore treatment, the stems were easier to decorticate. It is suggested that an early sowing date and the use of the IPA salt-based glyphosate with biactivator, and careful monitoring of the crop during the retting process, contributed to the early and successful harvest from the MPF + 28 plots, allowing mature seeds as well as fibre to be harvested from the flax plants.",
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    The importance of time of spraying, desiccant type and harvest time in stand-retted fibre flax: Industrial fibre production. / Bennett, Sarita; Wright, D; Edwards-Jones, G.

    In: Journal of Agricultural Science, Vol. 145, 2007, p. 565-576.

    Research output: Contribution to journalArticle

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    AB - Even and successful retting of flax through application of a desiccating herbicide and stand-retting is a major constraint to increasing its incorporation in industrial products. With the release of a new form of glyphosate based on the isopropylamine (IPA) salt with biactivator (Roundup Biactive, Monsanto Ltd), a field trial was planted using three flax varieties with differing levels of ease of desiccation at the Henfacs Research Centre, University of Wales Bangor in 2004. The crop was sprayed at four different times of maturity: mid-point of flowering plus 7 days (MPF + 7), MPF + 14, MPF + 21 or MPF + 28 using two different herbicide treatments; Roundup Biactive (Monsanto PLC) or Roundup Biactive + Restore (40% ammonium sulphate, AmegA Sciences PLC). Fibre quality was assessed following retting and the ease of decortication was measured. The highest fibre yields were obtained from the MPF + 28 spray date, and from the Biactive herbicide treatment. Although lower yields were recorded with the Biactive+Restore treatment, the stems were easier to decorticate. It is suggested that an early sowing date and the use of the IPA salt-based glyphosate with biactivator, and careful monitoring of the crop during the retting process, contributed to the early and successful harvest from the MPF + 28 plots, allowing mature seeds as well as fibre to be harvested from the flax plants.

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