Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-11T01:33:13.934Z Has data issue: false hasContentIssue false
  • English
  • Français

Influence of Picloram Alone or Plus 2,4-D on Control of Wild Oats (Avena fatua) with Four Postemergence Herbicides

Published online by Cambridge University Press:  12 June 2017

P. Ashley O'Sullivan
P. Ashley O'Sullivan*
Affiliation:
Agric. Can. Res. Stn., Lacombe, Alberta, TOC 1SO
Get access Rights & Permissions [Opens in a new window]

Abstract

Field experiments were conducted for 2 yr to determine the influence of picloram (4-amino-3,5,6-trichloropicolinic acid) and a commercial mixture of picloram plus 2,4-D [(2,4-dichlorophenoxy)acetic acid] (1:16, w/w) on control of wild oats (Avena fatua L. # AVEFA) with four postemergence herbicides. The phytotoxicity to wild oats of barban (4-chloro-2-butynyl m-chlorocarbanilate) or difenzoquat (1,2-dimethyl-3,5-diphenyl-1H-pyrazolium) in 1981 and diclofop {2-[4-(2,4-dichlorophenoxy)-phenoxy] propanoic acid} or flamprop [N-benzoyl-N-(3-chloro-4-fluorophenyl)-DL-alanine] in 1981 and 1982 was reduced when these herbicides were applied in a mixture with picloram plus 2,4-D. Consequently, the use of these mixtures for broad-spectrum weed control in one spray operation is not recommended. Picloram applied at a rate equivalent to the amount present in the picloram plus 2,4-D mixture did not influence the control of wild oats obtained with any herbicide, indicating that the antagonism was due to the 2,4-D component of the picloram plus 2,4-D mixture.

Keywords

Herbicide mixturesantagonismbarbandiclofopdifenzoquatflampropAVEFA
Type
Research Article
Information
Weed Science , Volume 31 , Issue 6 , November 1983 , pp. 889 - 891
Copyright
Copyright © 1983 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. Banting, J. D. 1974. Growth habit and control of wild oats. Agric. Canada Pub. 1531. 34.Google Scholar
2. Kefford, N. P. and Caso, O. H. 1966. A potent auxin with unique chemical structure — 4-amino 3,5,6-trichloropicolinic acid. Bot. Gaz. 129:159–163.Google Scholar
3. O'Sullivan, P. A. and Vanden Born, W. H. 1978. Interaction between difenzoquat and other herbicides for wild oat and ***broad-leaved weed control in barley. Weed Res. 18:257–263.Google Scholar
4. O'Sullivan, P. A. and Vanden Born, W. H. 1980. Interaction between benzoylprop ethyl, flamprop methyl or flamprop isopropyl and herbicides used for broadleaved weed control. Weed Res. 20:53–57.CrossRefGoogle Scholar
5. O'Sullivan, P. A., Friesen, H. A., and Vanden Born, W. H. 1977. Influence of herbicides for broad-leaved weeds and adjuvants with dichlorfop methyl on wild oat control. Can. J. Plant Sci. 57:117–125.Google Scholar
6. Pfeiffer, R. K., Baker, C., and Holmes, H. M. 1960. Factors affecting the selectivity of barban for the control of Avena fatua in wheat and barley. Proc. Brit. Weed Control Conf. 5:441–452.Google Scholar
7. Taylor, H. F., Loader, M.P.C., and Norris, S. J. 1983. Compatible and antagonistic mixtures of diclofop methyl and flamprop methyl with herbicides used to control broad-leaved weeds. Weed Res. 23:185–190.Google Scholar