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Mesotrione and Atrazine Combinations Applied Preemergence in Corn (Zea mays L.)

Published online by Cambridge University Press:  20 January 2017

Scott L. Bollman*
Affiliation:
Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824
James J. Kells
Affiliation:
Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824
Thomas T. Bauman
Affiliation:
Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907
Mark M. Loux
Affiliation:
Department of Horticulture and Crop Science, Ohio State University, Columbus, OH 43210
Charles H. Slack
Affiliation:
Department of Agronomy, University of Kentucky, Lexington, KY 40506
Christy L. Sprague
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61820
*
Corresponding author's E-mail: [email protected].

Abstract

Field trials were conducted in 2002 and 2003 at seven sites to determine the optimum rates of mesotrione and atrazine applied PRE for minimal crop injury and control of common lambsquarters, velvetleaf, Pennsylvania smartweed, common ragweed, giant ragweed, ivyleaf morningglory, and common cocklebur. All rates of each herbicide resulted in greater than 95% control of triazine-susceptible common lambsquarters. Mesotrione at 105 g ai/ha resulted in greater than 90% control of triazine-resistant common lambsquarters, velvetleaf, and Pennsylvania smartweed. Control of common ragweed was 90% or greater from mesotrione at 158 g/ha in combination with atrazine at 280 g/ha or greater. In addition, mesotrione at 210 g/ha combined with any rate of atrazine provided at least 92% control of common ragweed. Combinations of mesotrione and atrazine only suppressed, and did not effectively control, giant ragweed, common cocklebur, and ivyleaf morningglory.

Type
Research
Copyright
Copyright © Weed Science Society of America 

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