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Field Sandbur (Cenchrus spinifex) Control and Bermudagrass Response to Nicosulfuron Tank Mix Combinations

Published online by Cambridge University Press:  20 January 2017

Mark A. Matocha ,
W. James Grichar  and
Charles Grymes
Mark A. Matocha*
Affiliation:
Texas AgriLife Extension Service, College Station, TX 77843
W. James Grichar
Affiliation:
Texas AgriLife Experiment Station, Beeville, TX 78102
Charles Grymes
Affiliation:
DuPont Crop Protection, Inez, TX 77968
*
Corresponding author's E-mail: ma-matocha@tamu.edu.
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Abstract

Research was conducted in 2006 and 2007 to evaluate nicosulfuron tank-mixes for field sandbur control and crop injury to ‘Tifton 85’ and ‘Jiggs’ bermudagrass. In 2006, sequential applications of nicosulfuron + metsulfuron controlled field sandbur 86 to 90% 30 d after treatment (DAT) and 77 to 85% 90 DAT. Single applications of nicosulfuron provided less than 63% control 90 DAT. In 2007, sequential applications of nicosulfuron + metsulfuron controlled field sandbur 84 to 95% 42 DAT. Injury data showed Jiggs bermudagrass was generally more sensitive to herbicide treatment than Tifton 85. Injury to Tifton 85 bermudagrass ranged from 0 to 15%, whereas injury to Jiggs was 7 to 29% 22 DAT. Forage yield data for Jiggs showed significant reductions at the first and second harvests but no differences by the third harvest. No yield reduction was noted for Tifton 85 bermudagrass from any herbicide treatment. Results of these studies indicate that nicosulfuron + metsulfuron combinations are a viable option for field sandbur control in bermudagrass pastures.

En 2006 y 2007 se realizó una investigación para evaluar mezclas de nicosulfurón en el control de Cenchrus spinifex y los daño causados a Cynodon dactylon de var. ‘Tifton 85’ y ‘Jiggs’. En 2006, aplicaciones secuenciadas de nicosulfurón + metsulfurón controlaron Cenchrus spinifex de 86 a 90%, 30 días después del tratamiento (DAT), y de 77 a 85%, 90 DAT. Aplicaciones únicas de nicosulfurón proporcionaron menos del 63% de control a los 90 DAT. En 2007, aplicaciones secuenciadas de nicosulfurón + metsulfurón controlaron Cenchrus spinifex de 84 a 95%, 42 DAT. La cuántificación de daños mostró que el Cynodon dactylon var. Jiggs fue generalmente más sensible al tratamiento de herbicida que la Tifton 85. El daño al Cynodon dactylon var. Tifton 85 varió de 0 a 15%, mientras que en la var.Jiggs fue de 7 a 29%, 22 DAT. Los datos del rendimiento de forraje de la var. Jiggs mostró reducciones significativas en la primera y segunda cosecha, pero no hubo diferencia en la tercera. No se notó ninguna reducción en el rendimiento del Cynodon dactylon var. Tifton 85 causada por alguno de los tratamientos con herbicida. Los resultados de este estudio indican que las combinaciones de nicosulfurón + metsulfurón son una opción viable para el control de Cenchrus spinifex en praderas de Cynodon dactylon.

Keywords

Diuronmetsulfuronnicosulfuronfield sandbur, Cenchrus spinifex Cav. CCHINbermudagrass, Cynodon dactylon (L.) Pers. CYNDA, ‘Jiggs’, ‘Tifton 85’Bermudagrass toleranceherbicide combinationsinjuryturf
Type
Weed Management—Other Crops/Areas
Information
Weed Technology , Volume 24 , Issue 4 , December 2010 , pp. 510 - 514
Copyright
Copyright © Weed Science Society of America 

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