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Control of Woody Plants with Herbicide Mixtures

Published online by Cambridge University Press:  12 June 2017

R. E. Meyer  and
R. W. Bovey
R. E. Meyer
Affiliation:
U.S. Dep. of Agr., Agr. Res. Serv., Dep. Range Sci., Texas A&M Univ., College Station, TX 77843
R. W. Bovey
Affiliation:
U.S. Dep. of Agr., Agr. Res. Serv., Dep. Range Sci., Texas A&M Univ., College Station, TX 77843
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Abstract

Honey mesquite [Prosopis juliflora (Swartz) DC. var. glandulosa (Torr.) Cockerell], huisache [Acacia farnesiana (L.) Willd.], Macartney rose (Rosa bracteata Wendl.), live oak (Quercus virginiana Mill.), and whitebrush (Aloysia lycioides Cham.) were sprayed with herbicides alone and in mixtures. Mixtures of picloram (4-amino-3,5,6-trichloropicolinic acid) + dicamba (3,6-dichloro-o-anisic acid) at 0.56 + 0.56 and 1.12 + 1.12 kg/ha were most effective for killing honey mesquite in July. Picloram or picloram + dicamba were more effective for defoliating huisache than 2,4,5-T [(2,4,5-trichlorophenoxy)acetic acid], dicamba, or other mixtures of herbicides. On Macartney rose picloram as the salt or ester was most effective, but some mixtures of picloram plus either 2,4-D [(2,4-dichlorophenoxy)acetic acid] or 2,4,5-T were as effective as picloram alone. On live oak, the most effective treatments generally contained at least 1.12 kg/ha of picloram either alone or in mixtures with dicamba or 2,4,5-T. Picloram alone killed as many or more whitebrush plants than MCPA [[(4-chloro-o-tolyl)oxy]acetic acid], dicamba, 2,4,5-T, 2,4-D, or mixtures.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 5 , September 1973 , pp. 423 - 426
Copyright
Copyright © 1973 Weed Science Society of America 

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References

Literature Cited

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