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Roller Application of Clopyralid for Huisache, Acacia farnesiana, Control

Published online by Cambridge University Press:  12 June 2017

Charles J. Scifres ,
Richard A. Crane ,
Ben H. Koerth  and
Robert C. Flinn
Charles J. Scifres
Affiliation:
Dep. Range Sci., Tex. A&M Univ., College Station, TX 77843
Richard A. Crane
Affiliation:
Dep. Range Sci., Tex. A&M Univ., College Station, TX 77843
Ben H. Koerth
Affiliation:
Dep. Range Sci., Tex. A&M Univ., College Station, TX 77843
Robert C. Flinn
Affiliation:
Dep. Range Sci., Tex. A&M Univ., College Station, TX 77843
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Abstract

Experiments were conducted in south Texas from 1983 to 1987 to evaluate clopyralid for huisache control using a carpeted roller. Huisache control with clopyralid applied as broadcast sprays or with a carpeted roller generally equaled that from the same rates of picloram or of 1:1 mixtures of clopyralid plus picloram. Applications of herbicides in the fall generally were more effective than in the spring, regardless of application method. In most cases, the herbicides at 48 to 60 g ae/L fall applied with a carpeted roller killed 70% or more of the huisache. Herbicide efficacy was not reduced when all huisache top growth was removed within 1 week after roller application of a 1:1 mixture of clopyralid and picloram at 60 g ae/L. The treat-and-cut sequence should improve the quality of hay from huisache-infested pastures.

Keywords

Clopyralid, 3,6-dichloro-2-pyridinecarboxylic acidpicloram, 4-amino-3,5,6-trichloro-2-pyridinecarboxylic acidhuisache, Acacia farnesiana (L.) Willd. # ACAFABrush controlpasture improvementpicloramACAFA
Type
Research
Information
Weed Technology , Volume 2 , Issue 3 , July 1988 , pp. 317 - 322
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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