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 [...] for the Municipality of Venray. ‘We use nematodes at locations in outlying areas where there might be protected species of butterfly and moth. The major [...] a curative measure against the oak processionary caterpillar for several years,’ explains Joep van Bergeijk, coordinator of oak processionary caterpillar