Vorrichtung zum Verhindern des Hockletterns des Frostspanners an Baumstämmen

摘要

In order to replace the usual sticky band used until now, the invention provides a device for preventing the winter moth worm from climbing up tree trunks which does not kill useful insects such as the lacewing fly and contains no chemical insect controlling agents whatsoever. To this end, a device is provided which is fastened to a tree trunk and is characterized by having a blocking funnel which tightly surrounds the tree trunk with the upper, smaller opening rim thereof. The blocking funnel is cut through in an axial plane on one side.