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Weed Response to Mesotrione and Atrazine Applied Alone and in Combination Preemergence

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
Donald Penner
Affiliation:
Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824
*
Corresponding author's E-mail: [email protected].

Abstract

Greenhouse studies were conducted to determine the response of velvetleaf, common cocklebur, and ivyleaf morningglory to mesotrione and atrazine applied PRE, and to characterize the nature of any interaction between mesotrione and atrazine. Sensitivity to mesotrione was as follows: velvetleaf > common cocklebur > ivyleaf morningglory. Sensitivity to atrazine was as follows: ivyleaf morningglory > common cocklebur > velvetleaf. Combinations of mesotrione and atrazine resulted in at least an additive interaction. The activity of mesotrione and atrazine applied in combination was generally additive for control of velvetleaf and ivyleaf morningglory but was synergistic for several rate combinations.

Type
Research
Copyright
Copyright © Weed Science Society of America 

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