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Applicators for a Weed Pathogen plus Acifluorfen in Soybean

Published online by Cambridge University Press:  12 June 2017

Khosro Khodayari ,
Roy J. Smith Jr. ,
Joel T. Walker  and
David O. Tebeest
Khosro Khodayari
Affiliation:
Univ. Arkansas Rice Res. and Ext. Ctr., AR 72160
Roy J. Smith Jr.
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric, Stuttgart, AR 72160
Joel T. Walker
Affiliation:
Dep. Agric. Engineering, Fayetteville, AR 72701
David O. Tebeest
Affiliation:
Dep. Plant Pathology, Univ. Arkansas, Fayetteville, AR 72701
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Abstract

A low-volume (21.5 L/ha) spinning disc (controlled droplet applicator) and a high-volume (187 L/ha) boom-nozzle applicator were compared in applying tank mixtures of the weed pathogen Colletotrichum gloeosporioides (Penz.) Sacc. f. sp.] aeschynomene (henceforth designated C.G.A.) and acifluorfen {5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid} for control of northern jointvetch [Aeschynomene virginica (L.) B.S.P. # AESVI] and hemp sesbania [Sesbania exaltata (Raf.) Rydb. ex A.W. Hill # SEBEX] in soybean [Glycine max (L.) Merr. ‘Tracy M’]. Application with a spinning disc did not increase control of either weed species over the boom-nozzle applicator. C.G.A. controlled northern jointvetch in 2 of 3 yr. Northern jointvetch control with the spinning-disc was poorer at lower rates in years of unfavorable environment. Acifluorfen at 0.56 kg ai/ha and applied with either applicator controlled hemp sesbania satisfactorily.

Keywords

Glycine maxColletotrichum gloeosporioides f. sp. aeschynomenelow vs. high volume applicationintegrated weed controlbiological controlAESVISEBEX
Type
Research
Information
Weed Technology , Volume 1 , Issue 1 , January 1987 , pp. 37 - 40
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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