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Surface Applications of Dazomet Provide Nonselective Control of Seashore Paspalum (Paspalum vaginatum) Turf

Published online by Cambridge University Press:  20 January 2017

James T. Brosnan  and
Gregory K. Breeden
James T. Brosnan*
Affiliation:
Department of Tropical Plant and Soil Sciences, University of Hawaii, 3190 Maile Way #102, Honolulu, HI 96822
Gregory K. Breeden
Affiliation:
Department of Plant Sciences, University of Tennessee, 252 Ellington Plant Sciences Bldg., 2431 Joe Johnson Dr., Knoxville, TN 37996
*
Corresponding author's E-mail: jbrosnan@utk.edu.
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Abstract

Herbicide applications prior to turf renovation often fail to provide complete control of perennial warm-season turfgrass species like seashore paspalum. Surface applications of dazomet at 506 kg/ha provided > 90% POST control of ‘SeaDwarf’ seashore paspalum turf in 2008. Although applications of glyphosate at 5.6 kg/ha or fluazifop-P-butyl at 0.42 kg/ha induced significant injury, these treatments provided < 40% POST control of SeaDwarf seashore paspalum turf 10 wk after initial treatment (WAIT) in 2008. A similar response was noted following applications of glyphosate plus fluazifop-P-butyl at rates of 5.6 kg/ha and 0.42 kg/ha, respectively. POST control following applications of glyphosate at 5.6 kg/ha plus fluazifop-P-butyl at 0.42 kg/ha, prior to applying dazomet at 506 kg/ha, was not different from that which was observed following applications of dazomet alone at 506 kg/ha. These data suggest that granular applications of dazomet alone, at 506 kg/ha, can be used to provide effective control of SeaDwarf seashore paspalum prior to renovation.

Keywords

Dazometfluazifop-P-butylglyphosateseashore paspalum, Paspalum vaginatum Swartz. ‘SeaDwarf’ PASVAChlorophyll indexchlorophyll metersoil fumigationturfgrass renovation
Type
Weed Management—Other Crops/Areas
Information
Weed Technology , Volume 23 , Issue 2 , June 2009 , pp. 270 - 273
Copyright
Copyright © Weed Science Society of America 

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