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Postemergence Control and Glyphosate Tolerance of Doveweed (Murdannia nudiflora)

Published online by Cambridge University Press:  24 August 2017

Jeffrey L. Atkinson ,
Lambert B. McCarty ,
Brian A. Powell ,
Scott McElroy ,
Fred Yelverton  and
Alan G. Estes
Jeffrey L. Atkinson*
Affiliation:
Research Assistant, Professor, and Research Technician, School of Agriculture, Forest, and Environmental Sciences, Clemson University, E-143 Poole Agriculture Center, Clemson, SC 29634
Lambert B. McCarty
Affiliation:
Research Assistant, Professor, and Research Technician, School of Agriculture, Forest, and Environmental Sciences, Clemson University, E-143 Poole Agriculture Center, Clemson, SC 29634
Brian A. Powell
Affiliation:
Associate Professor, Department of Environmental Engineering and Earth Sciences, Clemson University, 342 Computer Court, LG Rich Environmental Laboratory, Anderson, SC 29625
Scott McElroy
Affiliation:
Professor, Department of Crop, Soil, and Environmental Sciences, 201 Funchess Hall, Auburn University, AL 36849
Fred Yelverton
Affiliation:
Professor, Department of Crop Science, North Carolina State University, 4401C Williams Hall, Campus Box 7620, Raleigh, NC 27695-7620
Alan G. Estes
Affiliation:
Research Assistant, Professor, and Research Technician, School of Agriculture, Forest, and Environmental Sciences, Clemson University, E-143 Poole Agriculture Center, Clemson, SC 29634
*
*Corresponding author’s E-mail: jeffreylatkinson@gmail.com
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Abstract

Doveweed is a problematic weed of lawns and sod production, as well as golf course roughs, fairways, and tees. End-user reports of selective POST control options are inconsistent and control is often short-lived. In addition, inconsistent control with non-selective herbicides such as glyphosate is common. The goals of this research were: (1) evaluate selective POST doveweed control options in ‘Tifway’ hybrid bermudagrass turf; (2) compare efficacy of single vs. sequential applications of selective POST herbicides; (3) quantify doveweed tolerance to glyphosate; and (4) quantify recovery of foliar applied glyphosate following treatment with a C14-glyphosate solution. A single application of sulfentrazone+metsulfuron; thiencarbazone+iodosulfuron+dicamba or 2,4-D+MCPP+dicamba+carfentrazone; or thiencarbazone+foramsulfuron+halosulfuron provided >60% control 2 weeks after initial treatment (WAIT). A second application of these treatments 3 WAIT improved control 6 WAIT. Two applications of 2,4-D+MCPP+dicamba+carfentrazone or thiencarbazone+foramsulfuron+halosulfuron provided ~80% control 6 WAIT. Doveweed was tolerant to glyphosate application up to 5.68 kgaeha-1. Absorption of 14C-glyphosate was compared between doveweed with cuticle intact, doveweed with a disturbed cuticle, and smooth crabgrass. 14C-glyphosate recovery from the leaf surface of doveweed plants with an intact cuticle was 93.6%. In comparison, 14C-glyphosate recovery from the leaf surface of doveweed plants with a disrupted cuticle and the leaf surface of crabgrass plants was 79.1 and 70.5%, respectively.

Keywords

BromoxynilcarfentrazonedicambaforamsulfuronglyphosatehalosulfuroniodosulfuronmecopropmetsulfuronMSMAquincloracsulfentrazonethiencarbazone2,4-Ddoveweed, Murdannia nudiflora (L.) Brenansmooth crabgrass, Digitaria ischaemum (Schreb.) Schreb. ex Muhl.‘Tifway’ bermudagrass, Cynodon dactylon (L.) Pers. × Cynodon transvaalensis Burtt-DavyGolf courseturfgrassweed control
Type
Weed Management-Other Crops/Areas
Information
Weed Technology , Volume 31 , Issue 4 , August 2017 , pp. 582 - 589
Copyright
© Weed Science Society of America, 2017 

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Footnotes

Associate Editor for this paper: Barry Brecke, University of Florida.

References

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