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Weed Control in Narrow and Wide-Row Soybeans

Published online by Cambridge University Press:  12 June 2017

L.M. Wax ,
W.R. Nave  and
R.L. Cooper
L.M. Wax
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Urbana, IL 61801
W.R. Nave
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Urbana, IL 61801
R.L. Cooper
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Urbana, IL 61801
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Abstract

Field studies were conducted over a 3-yr period to evaluate weed control systems for soybeans [Glycine max (L.) Merr.] grown in 18- and 76-cm rows. Combinations of herbicides satisfactorily controlled a broad spectrum of annual grass and broadleaf weeds in soybeans grown in 76-cm rows with cultivation and in 18-cm rows without cultivation. Where a single herbicide treatment was used to control only annual grasses, the 76-cm rows (which were cultivated once) yielded from essentially the same as 18-cm rows up to almost 50% more than the 18-cm rows, which received no cultivation, depending on the year and broadleaf weed infestation. However, where herbicide combinations were used to effectively control all weeds, soybeans in 18-cm rows averaged up to 9% higher yields than those in the 76-cm rows.

Type
Research Article
Information
Weed Science , Volume 25 , Issue 1 , January 1977 , pp. 73 - 78
Copyright
Copyright © 1977 by the Weed Science Society of America 

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