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Response of Purple Nutsedge to Amitrole, 2,4-D, and EPTC

Published online by Cambridge University Press:  12 June 2017

Ellis W. Hauser
Ellis W. Hauser*
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture. Formerly located at Experiment, Georgia
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Abstract

The response of purple nutsedge (Cyperus rotundus L.) clones grown from single tubers to 3-amino-1,2,4-triazole (amitrole), butoxyethanol ester of 2,4-dichlorophenoxyacetic acid (2,4-D), and ethyl N,N-di-n-propylthiolcarbamate (EPTC), and the response of established nutsedge to amitrole were studied under field conditions of the Georgia Piedmont Plateau. Clones were essentially eradicated by two applications of amitrole initiated up to 4 weeks after shoot emergence and by EPTC incorporated at 1 or 2 weeks after emergence. Excellent control resulted from 9 applications of 2,4-D initiated 1 or 2 weeks after shoot emergence. Timely applications of amitrole to an established stand controlled but did not eradicate nutsedege. This decreased response in an established stand seemed due, in part, to irregular emergence of plants in the established stand.

Type
Research Article
Information
Weeds , Volume 11 , Issue 4 , October 1963 , pp. 251 - 252
Copyright
Copyright © 1963 Weed Science Society of America 

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References

Literature Cited

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