Sumatran Fleabane (Conyza sumatrensis) Resistance to Glyphosate in Peach Orchards in Turkey

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dc.authoridInci, Deniz/0000-0002-7383-559X
dc.authoridGalvin, Liberty/0000-0002-1862-6998
dc.contributor.authorInci, Deniz
dc.contributor.authorGalvin, Liberty
dc.contributor.authorAl-Khatib, Kassim
dc.contributor.authorUludağ, Ahmet
dc.date.accessioned2025-01-27T20:17:09Z
dc.date.available2025-01-27T20:17:09Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractGlyphosate has been widely used to control annual, perennial, and biennial weeds including Conyza species. Conyza sumatrensis (Sumatran fleabane) is considered a highly invasive and troublesome weed worldwide, including in European and Mediterranean regions. In Turkey, the use of glyphosate in orchards has recently increased; however, extensive use of glyphosate has resulted in poor control of C. sumatrensis in several peach orchards. The objectives of this research were to determine if C. sumatrensis is resistant to glyphosate and identify alternative herbicides with different modes of action that can be used instead of glyphosate. Two dose response studies were conducted in the greenhouse to evaluate the response of four C. sumatrensis populations to glyphosate, chlorsulfuron, and metribuzin. Glyphosate isopropyl amine and glyphosate potassium was applied at 0, 0.25, 0.5, 1, 2, 4, and 8 times the use rate of 1080 g a.e./ha (a.e. indicates acid equivalent) when the plants were at rosette (5-6 true leaves) and vegetative (20-22 cm tall) stages. Effects of both glyphosate formulations were combined. The resistant populations showed higher resistance 3.8 to 6.6 and 5.3 to 7.8 times at rosette stage and vegetative stage, respectively, compared with the susceptible population. Furthermore, glyphosate-resistant populations were treated with chlorsulfuron and metribuzin at 0, 0.25, 0.5, 1, 2, 4, and 8 times use rate of 7.5 and 350 g a.i./ha, respectively at the rosette stage. The glyphosate-resistant populations exhibited 2.4 to 3.8 times more resistance to chlorsulfuron, but were adequately controlled with metribuzin.
dc.description.sponsorshipPlant Sciences Department of University of California, Davis
dc.description.sponsorshipWe thank the Plant Sciences Department of University of California, Davis for their support.
dc.identifier.doi10.21273/HORTSCI13749-18
dc.identifier.endpage879
dc.identifier.issn0018-5345
dc.identifier.issn2327-9834
dc.identifier.issue5
dc.identifier.startpage873
dc.identifier.urihttps://doi.org/10.21273/HORTSCI13749-18
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21501
dc.identifier.volume54
dc.identifier.wosWOS:000469238600019
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherAmer Soc Horticultural Science
dc.relation.ispartofHortscience
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectglyphosate isopropyl amin
dc.subjectglyphosate potassium
dc.subjectchlorsulfuron
dc.subjectmetribuzin
dc.subjectConyza sumatrensis (Retz.) E. H. Walker
dc.subjectPrunus persica Batsch
dc.subjectherbicide resistance
dc.subjectdose response
dc.titleSumatran Fleabane (Conyza sumatrensis) Resistance to Glyphosate in Peach Orchards in Turkey
dc.typeArticle

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