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1 June 2014 Assessment of Insecticide Resistance of Lobesia botrana (Lepidoptera: Tortricidae) in Emilia-Romagna Region
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Abstract

The European grapevine moth, Lobesia botrana (Denis & Schiffermüller) (Lepidoptera: Tortricidae), is the key pest of vineyard, Vitis vinifera L. In Italy, failures in field chemical pest control have been recently reported. The susceptibility to insecticides indoxacarb, methoxyfenozide, and emamectin benzoate was then evaluated in a L. botrana population collected from a vineyard in Emilia-Romagna (northeastern Italy) where pest management programs achieved unsatisfactory results. The field trial showed that the indoxacarb efficacy toward L. botrana was very low in the two timings of application (7.9 and -1.5%) in comparison with untreated control, while the efficacy of methoxyfenozide (76.1%) and emamectin benzoate (88.8%) was high. The decreased efficacy of indoxacarb was also supported by the results of the laboratory bioassay on neonate L. botrana larvae, in which the resistance ratio was 72-fold in comparison with that of the susceptible strain.

© 2014 Entomological Society of America
Stefano Civolani, Mauro Boselli, Alda Butturini, Milvia Chicca, Elisa Anna Fano, and Stefano Cassanelli "Assessment of Insecticide Resistance of Lobesia botrana (Lepidoptera: Tortricidae) in Emilia-Romagna Region," Journal of Economic Entomology 107(3), 1245-1249, (1 June 2014). https://doi.org/10.1603/EC13537
Received: 9 December 2013; Accepted: 1 April 2014; Published: 1 June 2014
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