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Velvetleaf (Abutilon theophrasti) Control in Sugarbeet (Beta vulgaris)

Published online by Cambridge University Press:  12 June 2017

Karen A. Renner  and
Gary E. Powell
Karen A. Renner
Affiliation:
Dep. Crop Soil Sci., Mich. State Univ., E. Lansing, MI 48824
Gary E. Powell
Affiliation:
Dep. Crop Soil Sci., Mich. State Univ., E. Lansing, MI 48824
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Abstract

Velvetleaf control in sugarbeet by clomazone and commercially available sugarbeet herbicides was investigated in greenhouse and field studies. In greenhouse studies, clomazone at 0.07 and 0.04 kg ai ha-1 controlled 97 and 69% of velvetleaf, respectively, with little visible sugarbeet injury. Adding clomazone to pyrazon, TCA, ethofumesate, pyrazon plus TCA, or TCA plus ethofumesate increased velvetleaf control but increased visible sugarbeet injury. In field studies, clomazone at 0.07 kg ha-1 did not enhance sugarbeet injury. However, velvetleaf was not controlled by clomazone alone or clomazone plus pyrazon, ethofumesate, combinations of pyrazon plus TCA, pyrazon plus ethofumesate, or pyrazon plus TCA plus ethofumesate. Cycloate preplant incorporated plus pyrazon preemergence followed by postemergence herbicides controlled velvetleaf in all 3 yr of research. Postemergence herbicides increased velvetleaf control from soil-applied herbicides in 1987 and 1988.

Keywords

Clomazone, 2-[(2-chlorophenyl)methyl)-4,4-dimethyl-3-isoxazolidinonecycloate, S-ethyl cyclohexylethylcarbamothioateethofumesate, (±)-2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonatepyrazon, 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinoneTCA, trichloroacetic acidsugarbeet, Beta vulgaris L.velvetleaf, Abutilon theophrasti Medicus ♯ ABUTHClomazonecycloateethofumesatepyrazonABUTH
Type
Research
Information
Weed Technology , Volume 5 , Issue 1 , March 1991 , pp. 97 - 102
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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