Editorial Type:
Article Category: Research Article
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Online Publication Date: 01 Mar 2010

Preemergence Control of Doveweed (Murdannia nudiflora) in Container-Grown Nursery Crops

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Page Range: 8 – 12
DOI: 10.24266/0738-2898-28.1.8
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Abstract

Preemergence herbicides were evaluated for control of doveweed (Murdannia nudiflora), a summer annual weed of increasing importance in nurseries of the southeastern United States. In the first experiments, broad-spectrum nursery herbicides OH2 (oxyfluorfen + pendimethalin), Snapshot TG (isoxaben + trifluralin), and BroadStar (flumioxazin) were compared. OH2 and Snapshot provided poor and variable control whereas BroadStar controlled doveweed 82 to 100%. In the second set of experiments, recommended rates of all major active ingredients labeled for use in container nursery crops and landscape plantings were compared for control of doveweed. Doveweed was controlled ≥ 95% by BroadStar, Pennant Magnum (s-metolachlor), and Tower (dimethenamid-p). Barricade (prodiamine), Dimension (dithiopyr), Gallery (isoxaben), OH2, Pendulum (pendimethalin), Regal O-O (oxyfluorfen + oxadiazon), Ronstar (oxadiazon), Rout (oxyfluorfen + oryzalin), Showcase (trifluralin + isoxaben + oxyfluorfen), Snapshot TG, and Surflan (oryzalin) did not control doveweed.

Keywords: preemergence herbicide; Aneilema nudiflora ; Commelina nudiflora ; Commelinaceae; container-grown nursery crops; nakedstem dewflower; weed control; doveweed [Murdannia nudiflora (Linn.) Brenan]; Barricade (prodiamine), 2,4-dinitro-N3,N3-dipropyl-6-(trifluoromethyl)-1,3-benzenediamine; BroadStar (flumioxazin), 2-[7-fluoro-3,4-dihydro-3-oxo-4-(2-propynyl)-2H-1,4-benzoxazin-6-yl]-4,5,6,7-tetrahydro-1H-isoindole-1,3(2H)-dione; Dimension (dithiopyr), S,S-dimethyl-2-(difluoromethyl)-4-(2-methylpropyl)-6-(trifluoromethyl)-3,5-pyridinedicarbothioate; Gallery (isoxaben), N-[3-(1-ethyl-1-methylpropyl)-5-isoxazolyl]-2,6-dimethoxybenzamide; OH2 (oxyfluorfen), 2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzene, plus (pendimethalin), N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine; Pendulum (pendimethalin); Pennant Magnum (s-metolachlor), 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide; Regal O-O (oxyfluorfen) plus (oxadiazon), 3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2-(3H)-one; Ronstar (oxadiazon); Rout (oxyfluorfen) plus (oryzalin), 4-(dipropylamino)-3,5-nitrobenzenesulfonamide; Showcase (trifluralin), 2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)benzenamine, plus (isoxaben) plus (oxyfluorfen); Snapshot TG (isoxaben) plus (trifluralin); Surflan (oryzalin); Tower (dimethenamid-p), 2-chloro-N-[(1-methyl-2-methoxy)ethyl]-N-(2,4-dimethyl-thien-3-yl)-acetamide.
Copyright: Copyright, All Rights Reserved 2010

Contributor Notes

This research was supported by grants and gifts from BASF Corporation, Dow AgroSciences, The Horticultural Research Institute, 1000 Vermont Avenue, NW, Suite 300, Washington, DC 20005, and Valent Corporation.

2Graduate Research Assistant, Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609.

3Professor and corresponding author, Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609. Joe_Neal@ncsu.edu

4Professor, Department of Plant Pathology, Physiology, and Weed Science, Hampton Roads Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Virginia Beach, VA 234553315. jderr@vt.edu

Received: 17 Feb 2009
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