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Chemical Mixtures for Control of Winged Elm

Published online by Cambridge University Press:  12 June 2017

J. F. Stritzke
J. F. Stritzke*
Affiliation:
Agron. Dep., Oklahoma State Univ., Stillwater, OK 74074
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Abstract

Various growth regulators, carrier systems, and ammonium thiocyanate (NH4SCN) additions in combination with herbicide mixtures were evaluated for their foliar phytotoxicity to winged elm (Ulmus alata Michx.). Silvex [2-(2,4,5-trichlorophenoxy)propionic acid] and 2,4,5-T [(2,4,5-trichlorophenoxy)acetic acid] were more effective than the dichlorophenoxy herbicides. Additions of NH4SCN to the ester of 2,4,5-T consistently increased control. Picloram (4-amino-3,5,6-trichloropicolinic acid) was the most effective herbicide for killing the trees, and in mixtures with the phenoxy herbicides consistently produced good tree kill. No increase in 2,4,5-T activity could be attributed to additions of growth regulators, concentrated nutrient solutions, or to type of carrier system used.

Type
Research Article
Information
Weed Science , Volume 23 , Issue 2 , March 1975 , pp. 131 - 136
Copyright
Copyright © 1975 by the Weed Science Society of America 

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References

Literature Cited

1. Basler, E., Santelmann, P.W., Badiei, A., and McCord, E.W. 1967. Effects of ammonium thiocyanate on the translocation of 2,4,5-T in blackjack oak and winged elm. Proc. S. Weed Conf. 20:382–386.Google Scholar
2. Basler, E. and Stritzke, J.F. 1971. Translocation of 2,4,5-T as affected by 2-chloroethylphosphonic acid and gibberellic acid. Weed Sci. Soc. Amer. Abstract. No. 17.Google Scholar
3. Bovey, R.W., Davis, F.S., and Morton, H.L. 1968. Herbicide combinations for woody plant control. Weed Sci. 16:332–335.Google Scholar
4. Brady, H.A. 1970. Ammonium nitrate and phosphoric acid increase 2,4,5-T absorption by tree leaves. Weed Sci. 18:204–206.Google Scholar
5. Elwell, H.M. 1967. Herbicides for release of shortleaf pine and native grass. Weeds 15:104–107.Google Scholar
6. Elwell, H.M. 1968. Winged elm control with picloram and 2,4,5-T with and without additives. Weeds 16:131–133.Google Scholar
7. Elwell, H.M., Santelmann, P.W., Stritzke, J.F., and Greer, H.A.L. 1974. Brush control research in Oklahoma. Okla. Agr. Exp. Sta. Bul. B-712.Google Scholar
8. Shellhorn, S.J. and Hull, H.M. 1971. A carrier for water-soluble herbicides. Weed Sci. 19:102–106.Google Scholar