Municipality Venray: biological control of oak processionary caterpillars
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 [...] According to Bergeijk, the results have been generally positive. ‘The trees that we have treated have been 90% cleared. What is interesting is that avenues running [...] against the oak processionary caterpillar for several years,’ explains Joep van Bergeijk, coordinator of oak processionary caterpillar management for the