New pheromone-based methods for grape moth control. Preliminary trials in 2004 | Nouveaux procedes a base de pheromones pour lutter contre les vers de la grappe. Essais preliminaires en 2004
2005
Charmillot, P.-J. | Degen, Th. | Pasquier, D. | Briand, F. (Agroscope RAC Changins, Station federale de recherches agronomiques, Nyon (Switzerland))
Three new types of dispensers for mating disruption of grapevine moth Lobesia botrana and grape berry moth Eupoecilia ambiguella were tested: small Ecodian dispensers as well as Isonet-L Plus and Isonet-E Plus dispensers. Microcapsules were sprayed by means of the classical treatment devices. The attract-and-kill method with pastes containing pheromones and an insecticide and the autoconfusion technique were also evaluated. Each of these procedures has been tested in two vineyards on a total surface ranging from 8.6 to 13.7 ha, except for autoconfusion, which was applied in a single vineyard on 4.6 ha. The captures of male moths in pheromone traps were strongly inhibited or completely suppressed with all treatments except for autoconfusion. Concerning infestation rates, Ecodian and Isonet-L Plus dispensers as well as the microcapsules showed an effectiveness similar to that of classical insecticide treatments or already registered dispensers. The effectiveness of the Isonet-E Plus dispensers and of the attract-and-kill technique was lower than that of classical control. Autoconfusion, tested in a sector with higher pest pressure, had practically no effect. Of course, these preliminary results have to be confirmed in situations with higher population densities than those observed in 2004.
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