Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-13T01:34:58.842Z Has data issue: false hasContentIssue false
  • English
  • Français

Influence of Phenoxy Herbicides on Picloram Uptake and Phytotoxicity

Published online by Cambridge University Press:  12 June 2017

A. S. Hamill ,
L. W. Smith  and
C. M. Switzer
A. S. Hamill
Affiliation:
Dep. of Bot., Univ. of Guelph, Guelph, Ontario
L. W. Smith
Affiliation:
Dep. of Environmental Biology, Univ. of Guelph, Guelph, Ontario
C. M. Switzer
Affiliation:
Dep. of Environmental Biology, Univ. of Guelph, Guelph, Ontario
Get access Rights & Permissions [Opens in a new window]

Abstract

The foliar uptake of 4-amino-3,5,6-trichloropicolinic acid (picloram) and its phytotoxicity in mixtures with several phenoxy herbicides were studied using bean (Phaseolus vulgaris L. ‘Red Kidney’). The greatest accumulation of picloram occurred in the growing point, stem, and axillary buds. Transport from the treated leaf occurred within 6 hr and continued for at least 7 days. The effectiveness of herbicide combinations containing picloram was related to the particular plant part measured. A synergistic reduction in fresh and dry red kidney bean weight was obtained with (2,4-dichlorophenoxy) acetic acid (2,4-D) or 2-[(4-chloro-o-tolyl)oxy]propionic acid (mecoprop) when applied in combination with picloram, whereas 4-(2,4-dichlorophenoxy)butyric acid (2,4-DB) and picloram gave an antagonistic response. An investigation of the antagonistic reaction of 2,4-DB with picloram indicated that picloram prevented the movement of 2,4-DB, while 2,4-DB increased both the distribution and the amount of picloram translocated from the point of application.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 3 , May 1972 , pp. 226 - 229
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. Alley, H. P. 1967. Some observations on Tordon-2,4-D combinations. Down Earth 23(1):2, 35–36.Google Scholar
2. Bovey, R. W., Davis, F. S., and Merkle, M. G. 1967. Distribution of picloram in huisache after foliar and soil application. Weeds 15:245–249.Google Scholar
3. Colby, S. R. 1967. Calculating synergistic and antagonistic responses of herbicide combinations. Weeds 15:20–22.Google Scholar
4. Crafts, A. S. and Yamaguchi, S. 1964. The autoradiography of plant materials. California Agr. Exp. Sta. Manual 34: 143 p.Google Scholar
5. Elwell, H. M. 1968. Winged elm control with picloram and 2,4,5-T with and without additives. Weeds 16:131–133.Google Scholar
6. Gantz, R. L. and Lanning, E. R. Jr. 1963. Tordon for the control of woody rangeland species in the western United States. Down Earth 19(3):10–13.Google Scholar
7. Nation, H. A. 1967. Report on tree control via injection with Tordon 101 mixture. Down Earth 23(2):24–27.Google Scholar