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Effect of Rye (Secale cereale) Mulch on Weed Control and Soil Moisture in Soybean (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Rex Liebl ,
F. William Simmons ,
Loyd M. Wax  and
Edward W. Stoller
Rex Liebl
Affiliation:
Dep. of Agron., Univ. Illinois, Urbana, IL 61801
F. William Simmons
Affiliation:
Dep. of Agron., Univ. Illinois, Urbana, IL 61801
Loyd M. Wax
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Crop Prot. Res. Unit, Univ. Illinois, Urbana, IL 61801
Edward W. Stoller
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Crop Prot. Res. Unit, Univ. Illinois, Urbana, IL 61801
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Abstract

A four-year experiment was conducted near Urbana, IL to evaluate the effect of a rye cover crop on weed control, soybean yield and soil moisture. Soybeans were planted into either a rye mulch or corn stubble (with and without spring tillage). Giant foxtail, velvetleaf, smooth pigweed and common lambsquarters control in the rye mulch plots was generally greater than 90% and better than the corn residue treatments five weeks after planting. Weed control was generally better, except for lambsquarters, in the corn residue without spring tillage plots compared to the spring-tilled plots. Herbicides improved weed control in the corn residue plots but not in the no-till rye treatment, due to the excellent control by the rye mulch. Soil water content was lowest during June under the late-killed (killed at planting) rye during dry periods due to water depletion caused by the growing rye. During wet periods the rye mulch resulted in a wetter soil profile compared to the corn residue treatments. Soybean yields were reduced in late-killed rye compared to early-killed rye (killed 2 wk prior to planting) due to soybean stand reductions in the late killed rye. Yields in early-killed rye and spring-tilled treatments were similar to or better than soybeans planted in corn residue without spring tillage.

Keywords

Common lambsquarters, Chenopodium album L. # CHEALgiant foxtail, Setaria faberi Herrm. # SETFAsmooth pigweed, Amaranthus hybridus L. # AMACHvelvetleaf, Abutilon theophrasti Medik. # ABUTHrye, Secale cereale, corn, Zea mays L.soybean, Glycine max (L.) Merr. ‘Hack’Cover cropno-tillagereduced tillage
Type
Research
Information
Weed Technology , Volume 6 , Issue 4 , December 1992 , pp. 838 - 846
Copyright
Copyright © 1990 by the Weed Science Society of America 

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