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Effects of Dalapon on a Medusahead Community

Published online by Cambridge University Press:  12 June 2017

Burgess L. Kay
Burgess L. Kay*
Affiliation:
University of California, Davis
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Abstract

Dalapon (2,2-dichloropropionic acid) was applied to a predominantly medusahead (Elymus caput-medusae L.) community at rates of 1, 2, 3, 4, and 5 lb/A and at four stages of growth. Low rates of dalapon gave better control when applied at early growth stages than the same rates applied later. Reduction in total ground cover was less from December and February applications than from March applications.

Dalapon at 3 lb/A applied 30 days after emergence gave 100% kill of medusahead. Two lb/A gave 96% or better control when applied during the vegetative stage (December, February, March). Both 2 and 3 lb/A applied in December, and 2 lb/A in February left a favorable balance of species among the remaining forage plants.

Type
Research Article
Information
Weeds , Volume 11 , Issue 3 , July 1963 , pp. 207 - 209
Copyright
Copyright © 1963 Weed Science Society of America 

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References

Literature Cited

1. Erickson, Lambert C. and Parish, Robert S. 1956. Chemical and cultural treatments for the control of medusa-head rye. Research Progress Report, WWCC, pp. 20–21.Google Scholar
2. Evans, R. A., and Love, R. M. 1957. The step-point method of sampling—a practical tool in range research. J. Range Mgmt. 10:208–212.CrossRefGoogle Scholar
3. Major, Jack. 1955. Weeds on California rangelands. California Agr. 9(12): 3–4.Google Scholar
4. Morton, Howard L., Torrell, Paul J., Haas, Robert H. 1958. The effects of rate and date of dalapon application on control of medusa-head rye. Elymus caput-medusae. Research Progress Report, WWCC. pp. 25–26.Google Scholar