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Interrelations of Row spacings, Cultivations and Herbicides for Weed Control in Soybeans

Published online by Cambridge University Press:  12 June 2017

Elroy J. Peters ,
Maurice R. Gebhardt  and
J. F. Stritzke
Elroy J. Peters
Affiliation:
Agricultural Research Service, U. S. Department of Agriculture
Maurice R. Gebhardt
Affiliation:
Agricultural Research Service, U. S. Department of Agriculture
J. F. Stritzke
Affiliation:
Agricultural Research Service, U. S. Department of Agriculture
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Abstract

Combinations of row spacings, tillage, and herbicides were evaluated on Clark soybeans grown on Mexico silt loam. Weeds were not always completely controlled with 3-amino-2,5-dichlorobenzoic acid (amiben) or sodium pentachlorophenate (PCP). When herbicides were used, soybeans in 20- and 24-inch rows usually needed no more than one cultivation, while those in 32- and 40-inch rows usually needed at least one and sometimes two cultivations for good weed control and high soybean yields. Soybeans in narrow rows always equalled and sometimes produced higher yields than those in wide rows. The soybean canopy covered the ground more rapidly in narrow rows than in wide rows so that when herbicides suppressed early weed growth, less weeds were produced in narrow rows than in wide rows. In some situations, cultivations increased soybean yields when few or no weeds were present.

Type
Research Article
Information
Weeds , Volume 13 , Issue 4 , October 1965 , pp. 285 - 289
Copyright
Copyright © 1965 Weed Science Society of America 

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References

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