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Response of Canada Thistle (Cirsium arvense) and Birdsfoot Trefoil (Lotus corniculatus) to Bentazon

Published online by Cambridge University Press:  12 June 2017

Chris M. Boerboom  and
Donald L. Wyse
Chris M. Boerboom
Affiliation:
Dep. Agron. and Plant Genetics, Univ. Minnesota, St. Paul, MN 55108
Donald L. Wyse
Affiliation:
Dep. Agron. and Plant Genetics, Univ. Minnesota, St. Paul, MN 55108
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Abstract

Bentazon [3-(1-methylethyl)-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide] was evaluated for Canada thistle [Cirsium arvense (L.) Scop. # CIRAR] control and birdsfoot trefoil (Lotus corniculatus L. ‘Norcen’) tolerance. Bentazon applied in split applications controlled more Canada thistle than a single application of equal rate in both greenhouse and field studies. Bentazon applied four times reduced the level of total nonstructural carbohydrates (TNC) in the roots of both greenhouse- and field-grown Canada thistle and increased birdsfoot trefoil injury more than bentazon applied in a single application of equal rate. All bentazon treatments caused unacceptable injury when birdsfoot trefoil was grown for seed.

Keywords

Split applicationsregrowthnonstructural carbohydratesCIRAR
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 36 , Issue 2 , March 1988 , pp. 250 - 253
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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