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Managing the risk of glyphosate resistance in Australian glyphosate‐ resistant cotton production systems
Author(s) -
Werth Jeff A,
Preston Christopher,
Taylor Ian N,
Charles Graham W,
Roberts Grant N,
Baker Jeanine
Publication year - 2008
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.1508
Subject(s) - glyphosate , weed control , resistance (ecology) , weed , production (economics) , business , sustainability , agronomy , herbicide resistance , pesticide resistance , microbiology and biotechnology , agroforestry , biology , pesticide , economics , ecology , macroeconomics
BACKGROUND: Glyphosate‐resistant cotton varieties are an important tool for weed control in Australian cotton production systems. To increase the sustainability of this technology and to minimise the likelihood of resistance evolving through its use, weed scientists, together with herbicide regulators, industry representatives and the technology owners, have developed a framework that guides the use of the technology. Central to this framework is a crop management plan (CMP) and grower accreditation course. A simulation model that takes into account the characteristics of the weed species, initial gene frequencies and any associated fitness penalties was developed to ensure that the CMP was sufficiently robust to minimise resistance risks. RESULTS: The simulations showed that, when a combination of weed control options was employed in addition to glyphosate, resistance did not evolve over the 30 year period of the simulation. CONCLUSION: These simulations underline the importance of maintaining an integrated system for weed management to prevent the evolution of glyphosate resistance, prolonging the use of glyphosate‐resistant cotton. Copyright © 2007 Society of Chemical Industry