Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-06T08:07:21.733Z Has data issue: false hasContentIssue false

A Carrier for Some Water-Soluble Herbicides

Published online by Cambridge University Press:  12 June 2017

Samuel J. Shellhorn
Affiliation:
Crops Res. Div., Agr. Res. Ser., U.S. Dep. of Agr., Tucson, Arizona
Herbert M. Hull
Affiliation:
Crops Res. Div., Agr. Res. Ser., U.S. Dep. of Agr., Tucson, Arizona

Abstract

A mixture of dimethyl sulfoxide (DMSO), glycerol, phytobland oil, and water (50:25:15:10, v/v) proved to be outstandingly effective as a carrier for water-soluble formulations of 4-amino-3,5,6-trichloropicolinic acid (picloram), (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T), and mixtures thereof. The carrier was selected after numerous experiments in which these and other adjuvants, used individually, gave at least some degree of herbicidal enhancement on velvet mesquite seedlings [Prosopis juliflora var. velutina (Woot.) Sarg.]. Maximum synergism between the carrier complex and herbicide occurred with the triethylamine salt of 2,4,5-T; relatively little influence on the butoxyethanol ester was observed. Picloram and 3,6-dichloro-o-anisic acid (dicamba) were intermediate in activity between the two phenoxy formulations.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Hull, H. M. 1965. Dimethyl sulfoxide as a herbicide carrier under different conditions of light intensity. Proc. West. Weed Contr. Conf. 20:12.Google Scholar
2. Hull, H. M. and Shellhorn, S. J. 1967. Foliar absorption of 2,4,5-T from emulsions and straight oil carriers in combination with oil-soluble surfactants. West. Weed Contr. Conf. Res. Progr. Rep., p. 123124.Google Scholar
3. Hull, H. M. and Shellhorn, S. J. 1968. Some herbicide-carrier interrelationships in the control of velvet mesquite. Proc. West. Soc. Weed Sci. 22:1920.Google Scholar
4. Norris, L. A. and Freed, V. H. 1963. Dimethyl sulfoxide as an absorption and translocation aid. West. Weed Contr. Conf. Res. Progr. Rep., p. 8586.Google Scholar
5. Shellhorn, S. J. and Hull, H. M. 1969. Enhanced herbicidal absorption in mesquite with a DMSO carrier complex. Weed Sci. Soc. Amer. Abst. No. 163.Google Scholar
6. Tschirley, F. H. 1968. Research Report … Response of tropical and subtropical woody plants to chemical treatments. Rep. CR 13–67, Agr. Res. Serv., U.S. Dep. of Agr. (Under Advanced Res. Projects Agency, U.S. Dep. of Defense) 197 p.Google Scholar