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 that [...] of oak processionary caterpillar, while those running north to south still have some nests. It is possible that there has been more drift during spraying [...] which means that the nematodes are more easily blown away. In some cases, we have to take curative action and extract the nests. But, on balance, Entonem makes