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Effects of Paraquat and Dinoseb in Hops

Published online by Cambridge University Press:  12 June 2017

A. G. Ogg Jr.  and
C. E. Zimmermann
A. G. Ogg Jr.
Affiliation:
Agric. Res. Serv., U.S. Dep. of Agric. Irrigated Agric. Res. and Ext. Center, Prosser, WA 99350
C. E. Zimmermann
Affiliation:
Agric. Res. Serv., U.S. Dep. of Agric. Irrigated Agric. Res. and Ext. Center, Prosser, WA 99350
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Abstract

Paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) at 1.1 and 2.2 kg/ha and paraquat + dinoseb (2-sec-butyl-4,6-dinitrophenol) at 1.1 + 0.7 kg/ha controlled redroot pigweed (Amaranthus retroflexus L.) and barnyardgrass [Echinochloa crus-galli (L.) Beauv.] in hops (Humulus lupulus L. ‘Yakima Cluster’) without reducing hop yield or the alpha and beta acid content of the hop cones. Three applications at about 3-week intervals were required to control weeds until harvest. Two applications controlled hop sucker growth. Paraquat at more than 0.6 kg/ha in the third application caused excessive reduction in hop sucker growth.

Type
Research Article
Information
Weed Science , Volume 24 , Issue 5 , September 1976 , pp. 493 - 495
Copyright
Copyright © 1976 by the Weed Science Society of America 

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References

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