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Influence of Application Variables on Antagonism Between Sethoxydim and Bentazon

Published online by Cambridge University Press:  12 June 2017

G. Neil Rhodes Jr.  and
Harold D. Coble
G. Neil Rhodes Jr.
Affiliation:
Dep. of Crop Sci., North Carolina State Univ., Raleigh, NC 27650
Harold D. Coble
Affiliation:
Dep. of Crop Sci., North Carolina State Univ., Raleigh, NC 27650
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Abstract

The effects of sethoxydim {2-[1-(ethoxyimino) butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexene-1-one} rate, order, and timing of sequential herbicide applications, and the addition of oil concentrate on sethoxydimbentazon [3-isopropyl-1H-2,1,3-benzothiadiazin-4(3H-one 2,2-dioxide] antagonism were studied on broadleaf signalgrass [Brachiaria platyphylla (Griseb.) Nash. ♯3 BRAPP], fall panicum (Panicum dichotomiflorum Michx. ♯ PANDI), and large crabgrass [Digitaria sanguinalis (L.) Scop. ♯ DIGSA] in field experiments during 1980 and 1981. Tank-mixing bentazon with sethoxydim reduced control of these species compared to applications of sethoxydim alone. Sequential applications of the herbicides prevented the antagonism. Variations in time between and order of sequential applications had no consistent effect on efficacy. Increases in sethoxydim rate reduced the severity of the antagonism in some cases, while the addition of oil concentrate had no effect.

Keywords

Brachiaria platyphyllaPanicum dichotomiflorumDigitaria sanguinalistank mixsequential applicationsBRAPPPANDIDIGSA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 32 , Issue 4 , July 1984 , pp. 436 - 441
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

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