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Hexazinone and Fertilizer Impacts on Sheep Sorrel (Rumex acetosella) in Wild Blueberry

Published online by Cambridge University Press:  20 January 2017

Karen J. Kennedy ,
Nathan S. Boyd  and
Vilis O. Nams
Karen J. Kennedy
Affiliation:
Department of Environmental Sciences, Nova Scotia Agricultural College, Truro, NS, Canada B2N 5E3
Nathan S. Boyd*
Affiliation:
Department of Environmental Sciences, Nova Scotia Agricultural College, Truro, NS, Canada B2N 5E3
Vilis O. Nams
Affiliation:
Department of Environmental Sciences, Nova Scotia Agricultural College, Truro, NS, Canada B2N 5E3
*
Corresponding author's E-mail: nboyd@nsac.ca
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Abstract

Sheep sorrel is an invasive, creeping perennial weed of lowbush blueberry fields. It is one of the most prominent weeds in blueberry fields in Nova Scotia and is responsible for decreasing yields. Three levels of fertilizer (0, 20, 40 kg N ha−1) and two levels of hexazinone (0 or 1.92 kg ai ha−1) were applied to experimental plots to determine their effects on sheep sorrel density. Sprout-year hexazinone reduced sheep sorrel densities, which led to increased yields. Fertilizer increased weed density in the absence of herbicides, had no effect on density in the presence of herbicides, tended to have no impact on floral buds, and did not increase yields. Fruiting-year hexazinone decreased sheep sorrel densities in some situations, but did not result in yield increases.

Keywords

Hexazinone, Velparsheep sorrel, Rumex acetosella L.lowbush blueberry, Vaccinium angustifolium Ait. and Vaccinium myrtilloides MichxWeed managementnitrogenvegetative shootsblueberryfloral budsyield
Type
Weed Management
Information
Weed Science , Volume 58 , Issue 3 , September 2010 , pp. 317 - 322
Copyright
Copyright © Weed Science Society of America 

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