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Compatibility of Diclosulam with Postemergence Herbicides and Fungicides

Published online by Cambridge University Press:  20 January 2017

Sarah H. Lancaster ,
Joshua B. Beam ,
James E. Lanier ,
David L. Jordan  and
P. Dewayne Johnson
Sarah H. Lancaster
Affiliation:
Department of Crop Science, North Carolina State University, P.O. Box 7620, Raleigh, NC 27695-7620
Joshua B. Beam
Affiliation:
Department of Crop Science, North Carolina State University, P.O. Box 7620, Raleigh, NC 27695-7620
James E. Lanier
Affiliation:
Department of Crop Science, North Carolina State University, P.O. Box 7620, Raleigh, NC 27695-7620
David L. Jordan*
Affiliation:
Department of Crop Science, North Carolina State University, P.O. Box 7620, Raleigh, NC 27695-7620
P. Dewayne Johnson
Affiliation:
Department of Crop Science, North Carolina State University, P.O. Box 7620, Raleigh, NC 27695-7620
*
Corresponding author's E-mail: david_jordan@ncsu.edu
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Abstract

Diclosulam is registered for residual and postemergence control of several broadleaf weeds and suppression of annual sedges in peanut in the southeastern United States. Many producers apply herbicides and other pesticides simultaneously to increase the spectrum of pest control or to increase efficiency of operations. However, compatibility of coapplication of pesticides is a concern. Field trials were conducted to evaluate the compatibility of diclosulam with other herbicides and fungicides. Horseweed control by diclosulam in combination with glyphosate, sulfosate, or paraquat was compared to combinations of these herbicides with flumioxazin, tribenuron plus thifensulfuron, or 2,4-D. All treatments that contained diclosulam controlled horseweed at least 86%. Broadleaf signalgrass control by clethodim and sethoxydim was not affected by diclosulam; however, large crabgrass control was reduced when graminicides were coapplied with diclosulam. Common ragweed control was reduced when diclosulam was applied with chlorothalonil and pyraclostrobin but not by azoxystrobin or tebuconazole.

Keywords

Bentazonclethodimdiclosulamflumioxazinglyphosateparaquatsethoxydimsulfosatethifensulfurontribenuronbroadleaf signalgrass, Bracharia platyphylla (Nash) R. D. Webster BRAPPcommon ragweed, Ambrosia artemisiifolia L. AMBELhorseweed, Conyza canadensis (L.) Cronq. ERICAlarge crabgrass, Digitaria sanguinalis (L.) Scop. DIGSApeanut, Arachis hypogaea L.Antagonismintegrated pest managementpesticide compatibility
Type
Research
Information
Weed Technology , Volume 21 , Issue 4 , December 2007 , pp. 869 - 872
Copyright
Copyright © Weed Science Society of America 

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