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Turfgrass species response to herbicides applied postemergence



Turfgrass species response to herbicides applied postemergence



Weed Technology 1(4): 305-311



Sethoxydim [2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio) propyl]-3-hydroxy-2-cyclohexen-1-one] at 0.34 kg ai/ha, fluazifop [(.+-.)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acid] at 0.13 kg ai/ha, and SC-1084 [3-hydroxy-4-[4-[[5-trifluoromethyl)-2-pyridinyl]oxy]phenoxy]pentanoic acid] at 0.28 kg ai/ha controlled 'Tifway' bermudagrass [Cynodon transvaalensis Burtt-Davy #3 CYNTR] .times. [Cynodon dactylon (L.) Pers. # CYNDA] nearly 100% when applied for 2 consecutive years. Tall fescue (Festuca arundinacea Schreb. 'Ky 31' # FESAR) tolerated fluazifop at 0.13 kg/ha and SC-1084 at 0.07 to 0.28 kg/ha; however, centipedegrass [Eremochloa ophiuroides (Munro) Hack. 'common' # ERLOP] and zoysiagrass (Zoysia japonica Steud. # ZOYJA .times. Zoysia tenuifolia Willd. ex trin. 'Emerald' # ZOYTE) did not tolerate these treatments. Centipedegrass tolerated sethoxydim, zoysiagrass tolerance was intermediate, and tall fescue was injured severely. Sethoxydim at 0.22 kg/ha discolored leaves of zoysiagrass, but the turf recovered fully. Thus, bermudagrass, when mixed with either tall fescue, centipedegrass, or zoysiagrass, can be controlled selectively with herbicides applied postemergence.

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Accession: 001723434

Download citation: RISBibTeXText

DOI: 10.1017/s0890037x00029791


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