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 [...] outlying areas where there might be protected species of butterfly and moth. The major benefit of Entonem is that nematodes kill fewer other caterpillars , which [...] have treated have been 90% cleared. What is interesting is that avenues running east to west are typically free of oak processionary caterpillar, while those