Municipality Venray: biological control of oak processionary caterpillars
difference According to Bergeijk, the results have been generally positive. ‘The trees that we have treated have been 90% cleared. What is interesting is [...] In the Municipality of Venray a third of the tree stock in the area, some 11,000 trees, is oak. ‘We’ve been using Koppert’s nematode product Entonem as [...] caterpillars , which means they are less harmful to biodiversity. This is something that is high up on the political agenda, as well as being an important