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Currentlythereareover200weedspecies(seeWEEDpakSectionJ3)knowntobepresentoncottonfarmsinAustralia,manyofwhichareproblematic.Whileafewoftheseweedspecieshavereceivedindepthresearch,mostweedspeciesremainpoorlyresearchedandaredifficulttocontrol.Inaddition,thebroadclimaticregionsoverwhichcottonproductionoccursinAustralia,thedifferingagronomicpractices,aswellasthewidelyvaryingsoiltypes,oftenmeanthatcontrolmeasureseffectiveinoneregion,arelesseffectiveinothers.Whilesomeweedtypesaresimilarandcanbecontrolledusingcomparabletechniques,others,whicharequiteclosebotanicallyeg.caltropandspinelesscaltrop(yellowvine)donotrespondinthesamemannertosomecontrolmethods.Unlessaccurateidentificationofthespeciesoccurs,controlmethodsemployedmaynotbeeffective.Thebestbetmanagementguideisacompilationofmanagementoptionsderivedfromaseriesoffocusgroupdiscussionsandinterviewswithgrowersandconsultantsfromallofthemajorgrowingregions.Theaimwastopassontheexperiencesofarangeofpeopleandtodetermineeffectivecontrolmethodsforsomeofthemorecommon,difficult-to-controlweeds.Theherbicideoptionslistedinthisdocumentarethoserecommendedbyconsultantsandgrowerswhoparticipatedinthefocusgroupsandinterviews.Someoftheoptionsgivenmaybeoff-label.Theymaynotnecessarilybeinaccordancewithlabeldirections.NeithertheCottonCRCnoranyofthedepartmentsrepresentedintheproductionofWEEDpaksupportstheoff-labeluseofherbicides.ChanglinJan2009CreditsColors网站配色方案HomepageNavigationZone’sNavigationHeaderandFooterToolbarGoodExample邮政商城UIModule邮政商城UIModule邮政商城UIModule邮政商城UIModule邮政商城UIModule邮政商城UIModule邮政商城UIModule邮政商城UIModule邮政商城UIModule
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