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Dimethenamid-p: Efficacy and Potato (Solanum tuberosum) Variety Tolerance

Published online by Cambridge University Press:  20 January 2017

Pamela J. S. Hutchinson ,
Corey V. Ransom ,
Rick A. Boydston  and
Brent R. Beutler
Pamela J. S. Hutchinson*
Affiliation:
Department of Plant, Soil, and Entomological Sciences, University of Idaho, Aberdeen, ID, 83210
Corey V. Ransom
Affiliation:
Malheur Experiment Station, Oregon State University, Ontario, OR, 97914
Rick A. Boydston
Affiliation:
USDA-ARS, Irrigated Agriculture Research and Extension Center, Prosser, WA 99350
Brent R. Beutler
Affiliation:
Aberdeen Research and Extension Center, Aberdeen, ID 83210
*
Corresponding author's E-mail: phutch@uidaho.edu
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Abstract

Treatments of dimethenamid-p at 0.7 kg ai/ha applied PRE in tank mixtures with EPTC (3.4 kg ai/ha), metribuzin (560 g ai/ha), pendimethalin (1.1 kg ai/ha), or rimsulfuron (26 g ai/ha) were compared with the same herbicides applied PRE alone in field efficacy trials in Idaho, Oregon, and Washington. Common lambsquarters, kochia, and redroot pigweed control was generally improved with dimethenamid-p tank mixtures compared with control by any herbicide applied alone except metribuzin. Hairy nightshade control at two locations was generally improved with tank mixtures compared with control by any herbicide applied alone. At Washington, where row spacing was narrower than at other locations, dimethenamid-p alone or in tank mixtures provided similar hairy nightshade control, and this control was greater than control by EPTC, metribuzin, or pendimethalin applied alone. ‘Alturas’, ‘Bannock Russet’, ‘Ranger Russet’, ‘Russet Burbank’, ‘Russet Norkotah’, and ‘Shepody’ potato tolerance to dimethenamid-p PRE at 0, 0.7, or 1.4 kg ai/ha was assessed in weed-free field trials conducted at Aberdeen, ID, in 2002 and 2003. Little or no crop injury was evident during the growing seasons and there were no reductions in U.S. No. 1 and total tuber yields regardless of dimethenamid-p rate or potato variety.

Keywords

Dimethenamiddimethenamid-pEPTCmetribuzinpendimethalinrimsulfuronpotato, Solanum tuberosum L. ‘Alturas’, ‘Bannock Russet’, ‘Ranger Russet’, ‘Russet Burbank’, ‘Russet Norkotah’, ‘Shepody’, ‘Superior’barnyardgrass, Echinochloa crus-galli (L.) Beauv # ECHCGcommon lambsquarters, Chenopodium album L. # CHEALhairy nightshade, Solanum sarrachoides Sendter # SOLSAkochia, Kochia scoparia (L.) Shrad. # KCHSCredroot pigweed, Amaranthus retroflexus L. # AMAREvolunteer oat, Avena sativa L. # AVESACrop safetycrop toleranceherbicide efficacyherbicide injuryOM, organic matterPNW, Pacific NorthwestTMP, tank-mix partnerWAT, weeks after treatment
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 4 , December 2005 , pp. 966 - 971
Copyright
Copyright © Weed Science Society of America 

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