Utilisation of repellents for the control of Western corn rootworm (Diabrotica virgifera virgifera LeConte, 1868)

The aim of the study was to find level repellent effect two chemical substances (DEET and 2-Undecanone) essential oils (from Allium sativum Eucalyptus oil) on Western corn rootworm (WCR), Diabrotica virgifera LeConte, 1868 in field conditions. Repellents were used area 5 x 4 meters with four replications. They applied as a solution 700 ?l chemical/essential oil one litter water. TWEEN 80 surfactant. After 24 48 hours, checked by visual observation. yellow sticky traps installed each plot after next hours for detection WCR adult beetles. experiment carried out during years (2019 2020) maize Mojmírovce (48.199284°N, 18.038637°E), Slovakia. results showed significant chemicals DEET 2-Undecanone adults. number beetles per plant significantly higher compared control both 2-Undecamone. This confirmed 2020, but not 2019, probably due lower catching indicate that can influence adults fields.