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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
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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 

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References

Literature Cited

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