Procedure for the displacement of the Jacob or water cross

摘要

The invention concerns a process for displacing the Jacob and/or water cross herb from a surface by means of a blood bear population, characterized by including steps, (a) on a first part of the area, a t least one Jakob or water cross-herb is brought into contact with a group of bear caterpillars and left on the plant, the first part of the area being a higher density of Jakobs and/or the other. has aquatic herbal plants, comprising at least two blood-bear caterpillars, and where the caterpillars are brought into contact with the plants at the earliest opportunity of the year,Puppets of a first and second generation can develop in the same year. In addition, the invention also concerns the use of bear caterpillars in a process of displacement of the Jacob and/or water cross herb, preferably in a process in accordance with one of the previous claims.