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Effect of Row Spacing and Herbicides on Burcucumber (Sicyos angulatus) Control in Herbicide-Resistant Corn (Zea mays)

Published online by Cambridge University Press:  20 January 2017

Wade R. Esbenshade ,
William S. Curran ,
Gregory W. Roth ,
Nathan L. Hartwig  and
Michael D. Orzolek
Wade R. Esbenshade
Affiliation:
Department of Agronomy, University Park, PA 16802
William S. Curran*
Affiliation:
Department of Agronomy, University Park, PA 16802
Gregory W. Roth
Affiliation:
Department of Agronomy, University Park, PA 16802
Nathan L. Hartwig
Affiliation:
Department of Horticulture, University Park, PA 16802
Michael D. Orzolek
Affiliation:
Penn State University, University Park, PA 16802
*
Corresponding author's E-mail: wsc2@psu.edu.
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Abstract

Experiments examining burcucumber management in glufosinate-resistant (GR) and imidazolinone-resistant (IMI) corn were conducted in 1997 and 1998 in southeastern Pennsylvania. GR corn was planted in 38- and 76-cm rows, and postemergence (POST) treatments of glufosinate and glufosinate plus atrazine were applied to corn at the V4 or V5 growth stage. In a second study, IMI corn was planted in 76-cm rows, and 15 preemergence (PRE) and POST herbicide programs were evaluated. Herbicide treatments included RPA-201772, CGA 152005, simazine, imazethapyr plus imazapyr, imazamox, chlorimuron plus thifensulfuron, nicosulfuron plus rimsulfuron plus atrazine, CGA 152005 plus primisulfuron, and combinations with atrazine. Burcucumber germinated throughout the growing season, with greatest emergence occurring in early June, gradually decreasing to minimal emergence by mid-July. Glufosinate alone controlled burcucumber 79 to 90% 7 weeks after planting (WAP) regardless of application timing or row spacing. By 10 to 13 WAP, control was 82% or less due to lack of residual control and new burcucumber emergence. Row spacing had little effect on burcucumber emergence or control and appears to have little impact on burcucumber management in corn. In general, PRE herbicide programs were less effective than POST programs, although PRE treatments containing atrazine equaled some POST herbicides. POST-applied chlorimuron plus thifensulfuron, nicosulfuron plus rimsulfuron plus atrazine, and CGA 152005 plus primisulfuron controlled burcucumber greater than 80 and 90% in 1997 and 1998, respectively. Imazethapyr plus imazapyr and imazamox applied POST controlled burcucumber 66% 10 WAP. Adding atrazine to POST herbicide programs did not increase control, with the exception of imazethapyr plus imazapyr.

Keywords

AtrazinechlorimuronglufosinateimazamoximazapyrimazethapyrRPA-201772 (proposed name, isoxaflutole), [5-cyclopropyl-4-(2-methyl-sulphonyl-4-trifluoromethyl-benzoyl)isoxozole]nicosulfuronprimisulfuronCGA 152005 (proposed name, prosulfuron), {1-(4-methoxy-6-methyl-triazin-2-yl)-3-[2-(3,3,3,-trifluoropropyl)-phenyl-sulfonyl]urea}, rimsulfuronthifensulfuronburcucumber, Sicyos angulatus L. #3 SIYANcorn, Zea mays L.Cultural controlherbicide-resistant cropsweed emergenceEPOST, early postemergenceGR, glufosinate resistantHRC, herbicide-resistant cropsIMI, imidazolinone resistantMPOST, midpostemergencePOST, postemergencePRE, preemergenceWAP, weeks after planting
Type
Research
Information
Weed Technology , Volume 15 , Issue 2 , June 2001 , pp. 348 - 354
Copyright
Copyright © Weed Science Society of America 

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