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Desiccant Evaluations: Late-Season Hairy Nightshade (Solanum sarrachoides) Control and Seed Response

Published online by Cambridge University Press:  20 January 2017

Pamela J.S. Hutchinson ,
Brent R. Beutler  and
Daniel M. Hancock
Pamela J.S. Hutchinson*
Affiliation:
Department of Plant, Soil, and Entomological Sciences, University of Idaho, Aberdeen, ID 83210
Brent R. Beutler
Affiliation:
Aberdeen Research and Extension Center, University of Idaho, Aberdeen, ID 83210
Daniel M. Hancock
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 studies were conducted from 2000 to 2003 to determine the effectiveness of potato desiccants for late-season hairy nightshade control and also their effect on hairy nightshade seed germination. Commercial sulfuric acid at 280 L/ha controlled 94 to 99% of the hairy nightshade 1 wk after treatment (WAT) in all years. Diquat at 560 g/ha and glufosinate-ammonium at 420 g/ha provided at least 93% control 1 WAT in all years except 2003 when control did not exceed 72%. By 3 WAT, hairy nightshade control ranged from 93 to 100% for all treatments, including carfentrazone-ethyl at 56 g/ha, diquat at 420 g/ha, paraquat at 530 g/ha, and sulfuric acid (proprietary process) at 280 L/ha. Treatment of plants with desiccants did not affect germination of hairy nightshade seed, with the exception of a 7% reduction in germination by the higher rate of diquat in 2001 and 2002.

Keywords

Carfentrazone-ethyldiquatglufosinate-ammoniumparaquatsulfuric acidSolanum sarrachoides Sendter #3 SOLSApotato, Solanum tuberosum L.Desiccationpotato vine-killweed seed germinationAMS, ammonium sulfateMSO, methylated seed oilNIS, nonionic surfactantWAH, weeks after harvest
Type
Research Article
Information
Weed Technology , Volume 20 , Issue 1 , March 2006 , pp. 37 - 40
Copyright
Copyright © Weed Science Society of America 

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