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Evaluation of Herbicides and Mowing on Catbriar (Smilax bona-nox) in Oklahoma Rangeland

Published online by Cambridge University Press:  20 January 2017

Eddie Funderburg ,
James Locke  and
Jon Biermacher
Eddie Funderburg*
Affiliation:
Ag Research, Agricultural Division, Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK 73401
James Locke
Affiliation:
Ag Research, Agricultural Division, Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK 73401
Jon Biermacher
Affiliation:
Ag Research, Agricultural Division, Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK 73401
*
Corresponding author's E-mail: [email protected]
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Abstract

Catbriar can be problematic to ranchers who graze rangeland. Five field studies of 2 yr duration were conducted during the 2007 to 2010 growing seasons to evaluate the effects of mowing and foliar-applied herbicides on the control of catbriar in Oklahoma rangeland. Without mowing, a formulated mixture of triclopyr and fluroxypyr (2.7 and 0.9 g ae L−1) and triclopyr alone (2.4 g ae L−1) applied at a volume of approximately 720 L ha−1 twice over 2 yr consecutively controlled catbriar 69 and 71% (visual rating), respectively. Relative to the untreated control, these two treatments reduced the number of live catbriar stems 53 and 64% at the final evaluation, respectively. Mowing without herbicide was equally as effective as any herbicide treatment in reducing the catbriar population. The effects of herbicide were independent of mowing (i.e., the two experimental variables were noninteractive). If infested areas can be mowed, adding herbicide is not necessary to reduce catbriar population.

La Smilax bona-nox puede ser una maleza problemática para los ganaderos que pastorean su ganado. Durante las estaciones de crecimiento de 2007–2010, se realizaron cinco estudios de campo de dos años de duración para evaluar los efectos del corte mecánico y de herbicidas de aplicación foliar, en el control de S. bona-nox en pastizales de Oklahoma. Sin el corte, una mezcla formulada de triclopyr y fluroxypyr (2.7 y 0.9 g ea L−1) y triclopyr solo (2.4 g ea L−1) aplicado a un volumen de aproximadamente 720 L ha−1, dos veces sobre dos años consecutivos, controlaron S. bona-nox en 69 y 71% (evaluación visual), respectivamente. Comparado con el testigo no tratado, estos dos tratamientos disminuyeron el número de tallos vivos de S. bona-nox 53 y 64% al fin de la evaluación, respectivamente. El corte sin herbicida fue igualmente efectivo como cualquier tratamiento con herbicida para reducir la población de S. bona-nox. Los efectos del herbicida fueron independientes del corte, i.e., las dos variables experimentales no fueron interactivas. Si las áreas infestadas pueden ser cortadas mecánicamente, la adición de herbicida no es necesaria para reducir la población de S. bona-nox.

Keywords

Fluroxypyrtriclopyrcatbriar, Smilax bona-nox L.rangelandGreenbriernot mowedmowedsuppressionpicloramdicamba2,4-D amine
Type
Weed Management—Other Crops/Areas
Information
Weed Technology , Volume 25 , Issue 4 , December 2011 , pp. 626 - 630
Copyright
Copyright © Weed Science Society of America 

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