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Effect of Date of Preplant Tillage and Planting on Weed Populations and Mechanical Weed Control in Soybean (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Douglas D. Buhler  and
Jeffery L. Gunsolus
Douglas D. Buhler
Affiliation:
Nat. Soil Tilth Lab., U.S. Dep. Agric., Agric. Res. Serv., 2150 Pammel Drive., Ames, IA 50011
Jeffery L. Gunsolus
Affiliation:
Dep. Agron. and Plant Genet. Univ. Minnesota, St. Paul, MN 55108
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Abstract

Additional information on mechanical weed management systems is needed so producers can develop systems that meet their production and weed control goals without sacrificing profitability. Field research was conducted at Rosemount, MN, in 1989, 1990, and 1991 to determine the effect of preplant tillage and soybean planting date on weed populations and effectiveness of mechanical weed control operations. Delaying soybean planting from mid-May to early-June reduced weed densities and yield losses from weeds. Weed control with a herbicide treatment was not affected by planting date, but control with rotary hoeing and cultivation was often increased by delaying soybean planting. Early-planted soybean usually yielded better following herbicide treatment than mechanical weed control. However, when preplant tillage and planting were delayed, weed densities were reduced and mechanical weed control operations usually resulted in soybean yield similar to the herbicide treatment. While delaying soybean planting reduced weed densities and improved mechanical weed control, there is potential for reduced soybean yields with delayed planting.

Keywords

Soybean, Glycine max (L.) Merr. ‘Hodgson 78.’Integrated weed managementweed population dynamicsABUTHAMAPOAMARKCHEALSETFA
Type
Weed Management
Information
Weed Science , Volume 44 , Issue 2 , June 1996 , pp. 373 - 379
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

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