Migration und Ausbreitung der Kirschfruchtfliege innerhalb vonudObstanlagen – Möglichkeit der biologischen Bodenbehandlung

摘要

The European cherry fruit fly (Rhagoletis cerasi) is the only pest insect which makes audinsecticide treatment of cherry fruit necessary. With regard of residue free cherries audbiocontrol method for R. cerasi by soil applications seems attractive. However, soiludtreatments can only be effective if the migration of flies is low. In order to examine theudpotential of soil treatments and to understand the dispersal behaviour of R. cerasi inudorchards, experiments using nettings to cover the soil were conducted. Theudexperiments were arranged in commercial, organically managed orchards. Theudnettings reduced fruit infestation by 90%. In addition, it was shown that the flies moveudonly very short distances (less than 5 m) within orchards. Thus, soil treatments are anudinteresting strategy to control R. cerasi in extensively managed orchards.