Valutazione di efficacia di etofenprox su popolazioni selvatiche di Cydia molesta

To assess the risk of occurrence of potential cases of lesser etofenprox sensitivity in wild populations of Cydia molesta, more than 10 years after its commercial release, a multi-year laboratory study was started to measure the efficacy of Trebon Star, at normal used doses, on: a) a laboratory reared population of C. molesta and identified as a reference strain as it has been never subjected to treatments with etofenprox based insecticide; b) several wild populations, collected from peach orchards in Romagna, where the product has been used for many years. Trebon Star, even in such situations where the control with other insecticides was difficult, retains fully its effectiveness and was able to produce, on wild populations, mortality rates that are identical and in some cases even better than those obtained with the reference population.