Control of the woolly apple aphid (Erisoma lanigerum Hausm.) by releasing earwigs (Forficula auricularia L.) and support oil applications - an interim report of first year results

摘要

The woolly apple aphid (Erisoma lanigerum Hausm.) has been recognised for some years asuda serious pest in organic fruit growing where they may cause severe economic damage dueudto a lack of control strategies. Based on preliminary results a new project has been started inud2007 testing combinations of releasing earwigs and oil applications in order to develop an onfarmudcontrol strategy. In this paper we present preliminary results of the first year of theudproject´s field trials. They showed good efficacies for applying oil preparations by brush. Theudefficacy of releasing earwigs depended on the infestation intensity.