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Influence of Tillage Systems on Annual Weed Densities and Control in Solid-seeded Soybean (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Douglas D. Buhler  and
Edward S. Oplinger
Douglas D. Buhler
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Dep. Agron. Plant Genetics, Univ. Minnesota, St. Paul, MN 55108
Edward S. Oplinger
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
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Abstract

Field research was conducted at Arlington, WI, and Janesville, WI, in 1986 and 1987 to evaluate the effect of conventional-tillage, chisel plow, and no-till systems on the density and control of annual weed species in solid-seeded soybean. Common lambsquarters densities were not greatly influenced by tillage systems, but redroot pigweed densities were generally highest in the chisel plow system. Conventional tillage always had greater velvetleaf densities than no-till and no-till always had greater giant foxtail densities than conventional tillage. Giant foxtail and redroot pigweed became more difficult to control when tillage was reduced, while velvetleaf became less of a problem. This response was not observed with all herbicide treatments evaluated and several herbicide treatments provided excellent weed control. Soybean yield was not affected by tillage systems under weed-free conditions and differences in soybean yield appeared to be due to differences in weed control.

Keywords

Common lambsquarters, Chenopodium album L. ♯ CHEALgiant foxtail, Setaria faberi Herrm. ♯ SETFAredroot pigweed, Amaranthus retroflexus L. ♯ AMAREvelvetleaf, Abutilon theophrasti Medik. ♯ ABUTHsoybean, Glycine max (L.) Merr. ‘Hardin’Alachlorchlorambenclomazoneconservation tillageimazaquinmetolachlormetribuzinno-tillpendimethalinGlycine maxChenopodium albumSetaria faberiAmaranthus retroflexusAbutilon theophrastiABUTHAMARECHEALSETFA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 38 , Issue 2 , March 1990 , pp. 158 - 165
Copyright
Copyright © 1990 by the Weed Science Society of America 

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