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Response of Seedling Bird Vetch (Vicia Cracca) to Six Herbicides

Published online by Cambridge University Press:  20 January 2017

Steven S. Seefeldt ,
Jeffery S. Conn ,
Brian E. Jackson  and
Stephen D. Sparrow
Steven S. Seefeldt*
Affiliation:
United States Department of Agriculture—Agricultural Research Service—Subarctic Agricultural Research Unit, University of Alaska Fairbanks, Fairbanks, AK 99775
Jeffery S. Conn
Affiliation:
United States Department of Agriculture—Agricultural Research Service—Subarctic Agricultural Research Unit, University of Alaska Fairbanks, Fairbanks, AK 99775
Brian E. Jackson
Affiliation:
Department of Plant, Animal, and Soil Sciences, University of Alaska Fairbanks, Fairbanks, AK 99775
Stephen D. Sparrow
Affiliation:
Department of Plant, Animal, and Soil Sciences, University of Alaska Fairbanks, Fairbanks, AK 99775
*
Corresponding author's E-mail: [email protected]
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Abstract

Bird vetch is a perennial Eurasian plant which, unlike many exotic weed species, can invade low fertility areas that have not been disturbed. It also is common in pastures, woodland, and tall forb communities. Bird vetch is expanding along Alaskan roadsides, in urbanized areas, and in low density forests. A greenhouse study was conducted to determine efficacy of six herbicide treatments applied at reduced rates in 2005 and again in 2006 for bird vetch seedling control. Bird vetch seedlings were tolerant of reduced rates of chlorsulfuron and 2,4-DB; however, complete control was achieved with rates of clopyralid, dicamba plus diflufenzopyr, triclopyr, and 2,4-D that were a fourth to an eighth of the full registered rate. These results will be important for developing effective, low-cost methods for controlling bird vetch in Alaska, especially on the outer margins of infestations.

Keywords

Chlorsulfuronclopyraliddicambadiflufenzopyrtriclopyr2,4-D2,4-DBbird vetch, Vicia cracca L. VICCRAlaskaexotic weedsgreenhouseweed control
Type
Research
Information
Weed Technology , Volume 21 , Issue 3 , September 2007 , pp. 692 - 694
Copyright
Copyright © Weed Science Society of America 

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