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Reducing Velvetleaf (Abutilon theophrasti) and Giant Foxtail (Setaria faberi) Seed Production with Simulated-Roller Herbicide Applications

Published online by Cambridge University Press:  12 June 2017

Barbara M. Biniak  and
Richard J. Aldrich
Barbara M. Biniak
Affiliation:
Dep. Agron.; and Res. Agron., Agric. Res. Serv., U.S. Dep. Agric.
Richard J. Aldrich
Affiliation:
Univ. Missouri, Columbia, MO 65211
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Abstract

The potential of preventing seed production and reducing seed viability of weeds that commonly grow taller than soybeans [Glycine max (L.) Merr. ‘Williams 82’] was evaluated. Chlorflurenol (2-chloro-9-hydroxy-9H-fluorene-9-carboxylic acid), chlorsulfuron {2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino] carbonyl] benzenesulfonamide}, and glyphosate [N-(phosphonomethyl)glycine] were evaluated against sparse stands of velvetleaf (Abutilon theophrasti Medik. # ABUTH) and giant foxtail (Setaria faberi Herrm. # SETFA) growing in soybeans. Simulated-roller applications of all three herbicides significantly reduced seed production and germination of both weeds, although glyphosate was more effective than were the other two. Applications during early flowering of velvetleaf and early heading of giant foxtail reduced seed production more than later applications when some seeds were present. With the early application of glyphosate, 99% prevention of velvetleaf and 96% prevention of giant foxtail seed production were attained. With the early glyphosate application, germination of seeds produced was reduced by 50% in velvetleaf and by 95% in giant foxtail. Soybean yields were not reduced by either glyphosate or chlorflurenol but were drastically reduced by chlorsulfuron.

Keywords

Weed seed viabilityroller applicatorABUTHSETFA
Type
Weed Biology and Ecology
Information
Weed Science , Volume 34 , Issue 2 , March 1986 , pp. 256 - 259
Copyright
Copyright © 1986 by the Weed Science Society of America 

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References

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