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A Technique for Evaluation of Mixtures of Dalapon and Cacodylic Acid

Published online by Cambridge University Press:  12 June 2017

Richard W. Chase ,
Richard D. Ilnicki  and
Milton A. Sprague
Richard W. Chase
Affiliation:
Department of Farm Crops Rutgers, Department of Crop Science, Michigan State University, East Lansing, Michigan
Richard D. Ilnicki
Affiliation:
Department of Soils and Crops, Rutgers University
Milton A. Sprague
Affiliation:
Department of Soils and Crops, Rutgers University
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Abstract

Orchardgrass (Dactylic glomerata L.) and Kentucky bluegrass (Poa pratensis L.) were used as test species to study the phytotoxicity of mixtures of 2,2-dichloropropionic acid (dalapon) and dimethylarsinic acid (cacodylic acid). A technique involving ED50 values, a shortened graphic procedure, and probit transformations was developed. Mixtures in which cacodylic acid was in excess indicated synergistic effects on bluegrass and additive effects on orchardgrass. Dalapon in excess in the mixtures appeared to have had an antagonistic effect on cacodylic acid. Orchardgrass was more tolerant to cacodylic acid than bluegrass.

Type
Research Article
Information
Weeds , Volume 11 , Issue 4 , October 1963 , pp. 290 - 292
Copyright
Copyright © 1963 Weed Science Society of America 

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References

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