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Influence of Herbicide and Application Timing on Blackberry Control

Published online by Cambridge University Press:  20 January 2017

J. A. Ferrell ,
B. A. Sellers ,
G. E. MacDonald  and
W. N. Kline
J. A. Ferrell*
Affiliation:
Agronomy Department, University of Florida, Gainesville, FL 32611
B. A. Sellers
Affiliation:
Range Cattle Research and Education Center, Ona, FL 33865
G. E. MacDonald
Affiliation:
Agronomy Department, University of Florida, Gainesville, FL 32611
W. N. Kline
Affiliation:
Dow AgroSciences, Duluth, GA 30096
*
Corresponding author's E-mail: jferrell@ufl.edu.
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Abstract

Blackberry is a troublesome species across much of the southeastern United States. Control of blackberry with the pyridine herbicides is often variable among different locations. Experiments were conducted to determine whether application timing, either spring or fall, affected efficacy of the pyridine herbicides triclopyr, fluroxypyr and picloram, and metsulfuron. The pyridine herbicides provided greater control when applied in the fall. At 12 mo after treatment, fluroxypyr plus picloram and fluroxypyr plus triclopyr provided 83% control when applied in the fall and 65% when applied in the spring. Conversely, metsulfuron provided 85% control, and application timing was not significant. Although metsulfuron effectively controls blackberry, it is also highly injurious to bahiagrass. Therefore, chlorosulfuron was tested to determine whether it would provide blackberry control while not injuring bahiagrass. Blackberry control with chlorosulfuron was similar to metsulfuron. These data indicated blackberry control in bahiagrass pastures can be effectively accomplished with chlorosulfuron.

Keywords

Chlorosulfuronfluroxypyrmetsulfuronpicloramtriclopyrblackberry, Rubus sppbahiagrass, Paspalum notatum Flüggé, ‘Pensacola’Pasturebrushperennial weed
Type
Research Article
Information
Weed Technology , Volume 23 , Issue 4 , December 2009 , pp. 531 - 534
Copyright
Copyright © Weed Science Society of America 

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