Sexual confusion
Procedure : The principle of mating confusion is to artificially saturate the atmosphere of the vineyard with female pheromones, which will prevent the males from locating the females and limit egg laying.
- Phytosanitary interests :
- This preventive method does not require spraying the vegetation. Limited effectiveness in some area
In what conditions ?
- Choice of site: 5 to 10 ha minimum of a block
- Installation and positioning of diffusers in the vineyard: 500 diffusers / ha + wastelands, paths and safety cordon depending on the site environment
- Population thresholds, control of infestations in generation 1 (G1) and generation 2 (G2) to assess the need for a possible catch-up treatment
- Choice of product according to the budworm species: Cochylis alone, Eudemis alone or Cochylis (2 generations) + Eudemis (2 or 3 generations)
- Removal of diffusers, then identical recycling within the framework of collections of empty packaging of phyto products
(Exemple: Adivalor)
See technical guides for the concrete implementation of sexual confusion according to the regions
- Interests of the technique :
- installation early at the start of the season, off peak
- quick and easy to install, once for the whole season
- permanent accessibility of the plots (no re-entry delay)
- cumulative effect with repeated use
- this method uses confusion and not insect eradication
- harmlessness of the pheromone for other auxiliaries
- Against which pests : Cluster worms; Eudemis; Cochylis