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Selectivity and Efficacy of Clopyralid on Strawberry (Fragaria X ananassa)

Published online by Cambridge University Press:  20 January 2017

Rodrigo A. Figueroa  and
Douglas J. Doohan
Rodrigo A. Figueroa*
Affiliation:
School of Agriculture and Forestry, Pontificia Universidad Católica de Chile; 7820436 Macul, Chile
Douglas J. Doohan
Affiliation:
Department of Horticulture and Crop Science, The Ohio State University, Wooster, OH 44691
*
Corresponding author's E-mail: [email protected]
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Abstract

Field experiments were conducted in 2001 through 2003 in Wooster, OH, to determine strawberry (Fragaria X ananassa) plant response to clopyralid applied after plant renovation in established plantings. Clopyralid applied at a rate of 200 g ae/ha or greater controlled at least 82% of common groundsel (Senecio vulgaris) 6 wk after treatment (WAT). Maximum total fruit yield (marketable plus unmarketable fruits) occurred at a clopyralid rate of 200 g/ha, and higher or lower rates resulted in reduced yield. Application of clopyralid at 400 g/ha tended to reduce the canopy of the strawberry crop, especially in comparison to rates lower that 200 g/ha. Overall, clopyralid applied POST at 200 g/ha did not reduce fruit yield when applied after strawberry renovation, and effectively controlled common groundsel plants that were entering the reproductive stage.

Keywords

Clopyralidcommon groundsel, Senecio vulgaris L. #3 SENVUstrawberry, Fragaria X ananassa DuchHerbicide tolerancepostrenovation application
Type
Research Article
Information
Weed Technology , Volume 20 , Issue 1 , March 2006 , pp. 101 - 103
Copyright
Copyright © Weed Science Society of America 

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