Municipality Venray: biological control of oak processionary caterpillars
management for the Municipality of Venray. ‘We use nematodes at locations in outlying areas where there might be protected species of butterfly and moth. The [...] harmful to biodiversity. This is something that is high up on the political agenda, as well as being an important social issue.’ Entonem makes a big difference [...] third of the tree stock in the area, some 11,000 trees, is oak. ‘We’ve been using Koppert’s nematode product Entonem as a curative measure against the oak