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Efficacy of Reduced Sulfentrazone Rates Applied Preemergence with Metribuzin in Potato (Solanum tuberosum)

Published online by Cambridge University Press:  20 January 2017

Pamela J. S. Hutchinson ,
Daniel M. Hancock  and
Brent R. Beutler
Pamela J. S. Hutchinson*
Affiliation:
Department of Plant, Soil, and Entomological Sciences, University of Idaho, Aberdeen, ID 83210
Daniel M. Hancock
Affiliation:
Aberdeen Research and Extension Center, University of Idaho, Aberdeen, ID 83210
Brent R. Beutler
Affiliation:
Aberdeen Research and Extension Center, University of Idaho, Aberdeen, ID 83210
*
Corresponding author's E-mail: phutch@uidaho.edu
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Abstract

Field trials were conducted with sulfentrazone at 53, 80, and 105 g ai/ha combined with 0, 420, and 560 g ai/ha metribuzin in a 3 by 3 factorial arrangement. Sulfentrazone and metribuzin combinations improved control of redroot pigweed, common lambsquarters, hairy nightshade, and volunteer oat compared with sulfentrazone applied alone. Kochia control was more than 90% regardless of metribuzin presence in the treatment. Sulfentrazone at 105 g/ha was needed for greater than 90% hairy nightshade control. Sulfentrazone alone or in combination with metribuzin did not provide greater than 89% volunteer oat control. Potato crop injury was less than 5% and total tuber yields increased as metribuzin rate increased from 0 to 560 g/ha, reflecting improved weed control as metribuzin rate increased.

Keywords

Metribuzinsulfentrazonepotato, Solanum tuberosum L. ‘Russet Burbank’common lambsquarters, Chenopodium album L. #CHEALhairy nightshade, Solanum sarrachoides Sendter # SOLSAkochia, Kochia scoparia L. Shrad. # KCHSCredroot pigweed, Amaranthus retroflexus L. # AMAREvolunteer oats, Avena sativa L. # AVESACrop safetyherbicide injuryreduced ratesOM, organic matterWAT, weeks after treatment
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 4 , December 2005 , pp. 954 - 958
Copyright
Copyright © Weed Science Society of America 

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