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Evaluation of Glufosinate-Resistant Corn (Zea mays) and Glufosinate: Efficacy on Annual Weeds

Published online by Cambridge University Press:  12 June 2017

Ronald F. Krausz ,
George Kapusta ,
Joseph L. Matthews ,
John L. Baldwin  and
Jason Maschoff
Ronald F. Krausz*
Affiliation:
Department of Plant, Soil, and General Agriculture, Southern Illinois University, Carbondale, IL 62901
George Kapusta
Affiliation:
Department of Plant, Soil, and General Agriculture, Southern Illinois University, Carbondale, IL 62901
Joseph L. Matthews
Affiliation:
Department of Plant, Soil, and General Agriculture, Southern Illinois University, Carbondale, IL 62901
John L. Baldwin
Affiliation:
Department of Plant, Soil, and General Agriculture, Southern Illinois University, Carbondale, IL 62901
Jason Maschoff
Affiliation:
AgrEvo USA Co., Seymour, IL 61875
*
Corresponding author: R. F. Krausz.
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Abstract

Field studies were conducted in 1996 and 1997 at Belleville and Pawnee, IL, to evaluate single and sequential applications of glufosinate on tolerance of glufosinate-resistant corn and annual weed control. Glufosinate caused 0 to 13% corn injury 7 days after treatment (DAT) and 0 to 6% corn injury 28 DAT. Injury was characterized as stunting with glufosinate. Glufosinate at 400 to 1,200 g ai/ha did not reduce final corn height or grain yield. At Pawnee in both years and at Belleville in 1996, a single application of glufosinate at 400 g/ha controlled giant foxtail, velvetleaf, ivyleaf morningglory, and common lambsquarters 85 to 100%. At Belleville in 1997, sequential applications of glufosinate provided greater weed control (87 to 100%) than a single application (0 to 63%) because of weed emergence after application. Weed control with a single application of glufosinate or with nicosulfuron plus bromoxynil was similar at both locations. Height and grain yield of glufosinate-resistant corn were not different from that of glufosinate-susceptible corn (isoline of glufosinate-resistant corn).

Keywords

Bromoxynil, 3,5-dibromo-4-hydroxybenzonitrileglufosinate, 2-amino-4-(hydroxymethylphosphinyl)butanoic acidcommon lambsquarters, Chenopodium album L. ♯ CHEALcommon ragweed, Ambrosia artemisiifolia L. ♯ AMBELgiant foxtail, Setaria faberi Herrm. ♯ SETFAivyleaf morningglory, Ipomoea hederacea (L.) Jacq. ♯ IPOHEvelvetleaf, Abutilon threophrasti Medicus ♯ ABUTHPostemergence herbicidestransgenic cropsAbutilon threophrastiAmbrosia artemisiifoliaChenopodium albumIpomoea hederaceaSetaria faberiABUTHAMBELCHEALIPOHESETFABAR, bialophos resistanceDAT, days after treatmentfb, followed byGlf-R, glufosinate-resistantGlf-S, glufosinate-susceptiblePAT, phosphinothricin acetyltransferasePOST, postemergencePPI, preplant incorporated
Type
Research
Information
Weed Technology , Volume 13 , Issue 4 , December 1999 , pp. 691 - 696
Copyright
Copyright © 1999 by the Weed Science Society of America 

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