Management of European cherry fruit fly (Rhagoletis cerasi) with exclusion netting: first results

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Abstract: The effect of exclusion netting against European cherry fruit fly (Rhagoletis cerasi) was studied in a cherry orchard in two subsequent years. Particularly, the treatments included different netting periods and net types on the cultivars Star and Regina. Single trees were covered with nets that were tied around the stem. At harvest time, cherries were collected, stored in the climate chamber and after 20 days the infestation rate was estimated by counting the emerged pupae. The results suggest that netting has the potential to be as efficient against R. cerasi as chemical treatment. However, covering the trees until harvest is particularly important for successful cherry fly management. This seems to be even more important than covering the timespan before colour change. The use of 1.3 mm BiocontrolNet is recommended for cherry fly control, since a finer meshed net does not result in additional reduction of infestation.

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