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Control of Kochia in Sugarbeets with 3′-Hydroxypropionanilide Isopropylcarbamate

Published online by Cambridge University Press:  12 June 2017

E. E. Schweizer
E. E. Schweizer*
Affiliation:
Agr. Res. Serv., U. S. Dep. of Agr., in cooperation with the Bot. and Plant Pathol. Dep., Colorado State Univ., Fort Collins, CO. 80521
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Abstract

When the mixture of 3.4 kg/ha of S-ethyl N-ethylthiocyclohexanecarbamate (cycloate) plus 1.1 kg/ha of 3′-hydroxypropionanilide isopropylcarbamate (R 11913) was applied to three soils before planting sugarbeets (Beta vulgaris L.), the average stand of kochia (Kochia scoparia (L.) Schrad.) was reduced by 89% as compared to 9% with the standard rate of 4.5 kg/ha of cycloate. The competition of foxtail millet (Setaria italica (L.) Beauv.), redroot pigweed (Amaranthus retroflexus L.), and kochia was nearly eliminated throughout the growing season by a combination of 3.4 kg/ha of cycloate plus 1.1 kg/ha of R 11913 applied preplanting and 0.84 kg/ha of methyl m-hydroxycarbanilate m-methylcarbanilate (phenmedipham) applied postemergence. This combination of treatments minimized competition from weeds all season, and the yield of sucrose was within 8% of that of the handweeded plots. Residues of the mixture of cycloate plus R 11913 were not detected biologically in two soils 8 months following application.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 2 , March 1973 , pp. 110 - 114
Copyright
Copyright © 1973 Weed Science Society of America 

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References

Literature Cited

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