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Interactions of Clethodim and Sethoxydim with Selected Agrichemicals Applied to Peanut

Published online by Cambridge University Press:  20 January 2017

Sarah H. Lancaster
Affiliation:
Department of Crop Science, North Carolina State University, Box 7620, Raleigh, NC 27695-7620
David L. Jordan*
Affiliation:
Department of Crop Science, North Carolina State University, Box 7620, Raleigh, NC 27695-7620
Alan C. York
Affiliation:
Department of Crop Science, North Carolina State University, Box 7620, Raleigh, NC 27695-7620
John W. Wilcut
Affiliation:
Department of Crop Science, North Carolina State University, Box 7620, Raleigh, NC 27695-7620
David W. Monks
Affiliation:
Department of Horticultural Science, North Carolina State University, Box 7609, Raleigh, NC 27695-7609
Rick L. Brandenburg
Affiliation:
Department of Entomology, North Carolina State University, Box 7613, Raleigh, NC 27695-7613
*
Corresponding author's E-mail: david_jordan@ncsu.edu

Abstract

Experiments were conducted in North Carolina during 2002 and 2003 to evaluate broadleaf signalgrass and large crabgrass control by clethodim and sethoxydim applied in two-, three-, or four-way mixtures with fungicides, insecticides, and foliar fertilizer–plant growth regulator treatments. Broadleaf signalgrass and large crabgrass control by clethodim and sethoxydim was not reduced by the insecticides esfenvalerate, indoxacarb, or lambda-cyhalothrin. The fungicides azoxystrobin, chlorothalonil, pyraclostrobin, and tebuconazole reduced large crabgrass control by clethodim or sethoxydim in one or more of three experiments for each herbicide. Disodium octaborate and the plant growth regulator prohexadione calcium plus urea ammonium nitrate (UAN) mixed with clethodim and fungicides improved large crabgrass control in some experiments. In contrast, prohexadione calcium plus UAN and disodium octaborate did not affect broadleaf signalgrass or large crabgrass control by sethoxydim.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

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