The importance of bee pollination of the sour cherry (Prunus cerasus) Cultivar ‘Stevnsbaer’ in Denmark

Authors

  • Lise Hansted University of Copenhagen
  • Brian W. W. Grout University of Copenhagen
  • Jørgen Eilenberg University of Copenhagen
  • Ivar B. Dencker University of Copenhagen
  • Torben B. Toldam-Andersen University of Copenhagen

DOI:

https://doi.org/10.26786/1920-7603(2012)17

Abstract

Low fruit set, despite normally-developed flowers, is often a significant contributor to poor yield of the self-fertile sour cherry (Prunus cerasus) cultivar ‘Stevnsbaer’ in Denmark. The aim of this study was to investigate the effect of insect, and particularly, bee pollination on the fruit set of this cultivar, in order to provide orchard management information for both Danish ‘Stevnsbaer’ growers and beekeepers. Visits to cherry flowers by honey bees (Apis mellifera), Bombus species and solitary bees, were recorded during the flowering of ‘Stevnsbaer’ in five separate Danish orchards. The results indicate that there is a significantly higher fruit set on open pollinated branches when compared to caged branches, where bees and other pollinating insects where excluded. The results were qualitatively consistent over three different seasons (2007, 2009 and 2010). A period of prolonged cold, humid weather before and during early flowering probably reduced fruit set significantly in 2010 compared to 2009. Regarding the apparent benefits of bee pollination on fruit set and subsequent implications for yield, we recommend placing honeybees in ‘Stevnsbaer’ orchards during flowering to sustain commercially viable production. Another valuable management strategy would be to improve foraging and nesting conditions to support both honey and wild bees in and around the orchards.

Author Biographies

Lise Hansted, University of Copenhagen

Department of Agriculture and Ecology
Assistant Professor

Brian W. W. Grout, University of Copenhagen

Department of Agriculture and Ecology
Professor

Jørgen Eilenberg, University of Copenhagen

Department of Agriculture and Ecology
Professor

Ivar B. Dencker, University of Copenhagen

Department of Agriculture and Ecology
PhD

Torben B. Toldam-Andersen, University of Copenhagen

Department of Agriculture and Ecology
Associate Professor

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Published

2012-12-03

How to Cite

Hansted, L., Grout, B. W. W., Eilenberg, J., Dencker, I. B., & Toldam-Andersen, T. B. (2012). The importance of bee pollination of the sour cherry (Prunus cerasus) Cultivar ‘Stevnsbaer’ in Denmark. Journal of Pollination Ecology, 10, 124–129. https://doi.org/10.26786/1920-7603(2012)17

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Articles