Hostname: page-component-76fb5796d-r6qrq Total loading time: 0 Render date: 2024-04-26T03:34:55.765Z Has data issue: false hasContentIssue false
  • English
  • Français

Factors Affecting the Herbicidal Activity of TCA on Green Foxtail

Published online by Cambridge University Press:  12 June 2017

Paul N. P. Chow
Paul N. P. Chow*
Affiliation:
Res. Sta., Canada Dep. of Agr., Brandon, Manitoba, Canada
Get access Rights & Permissions [Opens in a new window]

Abstract

Growth of green foxtail (Setaria viridis (L.) Beauv.) was effectively controlled in the greenhouse by applying the sodium salt of trichloroacetic acid (TCA) as a postemergence treatment, when a rate of 0.84 kg/ha was used; when application preceded the two-leaf stage; and when 2.54 mm of water were available daily for moving TCA into the soil. There were significant interactions of TCA rate with light intensity, temperature, and source of seeds on the response of green foxtail. Seedhead production was curtailed at rates of 0.56 kg/ha or above when plants were grown under high light intensities (19,250 to 22,000 lux) and at moderate temperatures (20 to 22 C). Rates of 1.68 kg/ha or more were required to stop heading of foxtail grown at high temperature (27 C).

Type
Research Article
Information
Weed Science , Volume 20 , Issue 2 , March 1972 , pp. 172 - 176
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. Lobay, W. and Powers, S. C. 1969. Weed control activities in Alberta—1969. Rep., Res. Planning Comm., Canada Weed Comm. (West. Sect.). p. 4–11.Google Scholar
2. Marsh, P. C. and Davis, F. F. 1945. Relation of temperature to the selective herbicidal effects of (2,4-dichlorophenoxy)acetic acid. Bot. Gaz. 106:463–472.Google Scholar
3. Muzik, T. J. and Mauldin, W. G. 1964. Influence of environment on the response of plants to herbicides. Weeds 12:142–145.CrossRefGoogle Scholar
4. Splittstoesser, W. E. and Derscheid, L. A. 1962. Effects of environment upon herbicides applied preemergence. Weeds 10:304–307.CrossRefGoogle Scholar