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Imazethapyr plus Propanil Programs in Imidazolinone-Resistant Rice

Published online by Cambridge University Press:  20 January 2017

Tyler P. Carlson ,
Eric P. Webster ,
Michael E. Salassi ,
Justin B. Hensley  and
David C. Blouin
Tyler P. Carlson
Affiliation:
School of Plant, Environmental, and Soil Science, Louisiana State University, 104 Sturgis Hall, Baton Rouge, LA 70803
Eric P. Webster
Affiliation:
School of Plant, Environmental, and Soil Science, Louisiana State University, 104 Sturgis Hall, Baton Rouge, LA 70803
Michael E. Salassi
Affiliation:
Department of Agricultural Economics and Agribusiness, 101 Agricultural Administration Building, Baton Rouge, LA 70803
Justin B. Hensley
Affiliation:
School of Plant, Environmental, and Soil Science, Louisiana State University, 104 Sturgis Hall, Baton Rouge, LA 70803
David C. Blouin*
Affiliation:
Department of Experimental Statistics, 45 Agricultural Administration Building, Baton Rouge, LA 70803
*
Corresponding author's E-mail: ewebster@agcenter.lsu.edu.
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Abstract

Field studies were conducted in 2008 and 2009 near Crowley, Louisiana, to evaluate the addition of different propanil formulations in mixture with a standard imazethapyr program of 70 g ai ha−1 early postemergence followed by (fb) 70 g ha−1 late postemergence. Weeds evaluated included red rice, barnyardgrass, Texasweed, and alligatorweed. Control of all species with treatments, including a propanil formulation applied at 3,400 g ai ha−1, was equivalent to, or greater than, the standard imazethapyr program. Rough rice yield and economic returns were maximized when the propanil formulations of Propanil 1 or Propanil 3 were mixed with imazethapyr in the early postemergence applications. The addition of propanil to imazethapyr increased rough rice yield and economic returns because of improved weed control.

En 2008 y 2009, se realizaron estudios de campo cerca de Crowley, Louisiana para evaluar la adición de diferentes formulaciones de propanil en mezcla con un programa estándar de imazethapyr de 70 g ia ha−1 aplicado en post-emergencia temprana y seguido por (fb) 70 g ha−1 en post-emergencia tardía. Las malezas evaluadas incluyeron Oryza sativa (silvestre), Echinochloa crus-galli, Caperonia palustris y Althernanthera philoxeroides. El control de todas las especies con tratamientos incluyendo una formulación de propanil, aplicada a 3400 g ia ha−1, fue equivalente o mayor que el programa estándar de imazethapyr. El rendimiento de arroz en bruto y los ingresos se maximizaron cuando las formulaciones de Propanil 1 o Propanil 3 se mezclaron con imazethapyr en post-emergencia temprana. La adición de propanil al imazethapyr incrementó el rendimiento bruto del arroz y los ingresos, debido al mejoramiento en el control de malezas.

Keywords

Imazethapyrpropanilalligatorweed, Althernanthera philoxeroides (Mart.) Grisebbarnyardgrass, Echinochloa crus-galli (L.) Beauvred rice, Oryza sativa L.Texasweed, Caperonia palustris (L.) St. HilClearfield riceeconomicseconomic returnsherbicide
Type
Weed Management—Major Crops
Information
Weed Technology , Volume 25 , Issue 2 , June 2011 , pp. 204 - 211
Copyright
Copyright © Weed Science Society of America 

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