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Control of Yellow Rocket and White Cockle in Established Alfalfa

Published online by Cambridge University Press:  12 June 2017

R. E. Hastings  and
Cyril A. Kust
R. E. Hastings
Affiliation:
Department of Agronomy, University of Wisconsin, Madison
Cyril A. Kust
Affiliation:
University of Wisconsin, Madison
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Abstract

Yellow rocket (Barbarea vulgaris R. Br.) was effectively controlled in established alfalfa (Medicago sativa L.) by September 15 applications of 2-chloro-4,6-bis(ethylamino)-s-triazine (simazine), 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine), 3-tert-butyl-5-chloro-6-methyluracil (terbacil), and 2-sec-butylamino-4-ethylamino-6-methoxy-s-triazine (hereinafter referred to as GS 14254). White cockle (Lychnis alba Mill.) was more difficult to control, but simazine was the most effective herbicide. Herbicide applications in early October reduced reserve nonstructural carbohydrate accumulations in roots of yellow rocket by November 15 but not in white cockle. Alfalfa yields were not reduced by two consecutive autumn applications of the herbicides at rates that provided adequate control of yellow rocket and white cockle.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 3 , May 1970 , pp. 329 - 333
Copyright
Copyright © 1970 Weed Science Society of America 

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References

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