Wireworms tunneling into potato tubers cause quality decline to the product. Due to the short time between initial wireworm presence in the topsoil in spring and the moment of potato planting, decisions whether or not to control wireworms based on monitoring in spring are insecure. Increased knowledge on temperature and soil moisture may help enhance a succesful monitoring strategy. Two trials performed in climate chambers showed wireworms to be increasingly active between 5°C and 25°C. The preferent soil moisture level was 20%, ranging from 10 to 25%.
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