| Title: | Development of Monitoring and Mating Disruption against the Chilean Leafroller Proeulia auraria (Lepidoptera: Tortricidae) in Orchards |
| Author(s): | Flores MF; Bergmann J; Ballesteros C; Arraztio D; Curkovic T; |
| Address: | "Instituto de Quimica, Pontificia Universidad Catolica de Valparaiso, Avda. Universidad 330, Curauma, Valparaiso 2340000, Chile. Agroadvance SpA. Camino Melipilla, Penaflor, Santiago 9710000, Chile. Facultad de Agronomia e Ingenieria Forestal, Pontificia Universidad Catolica de Chile, Avda. Vicuna Mackenna 4860, Macul, Santiago 7820436, Chile. Facultad de Ciencias Agronomicas, Universidad de Chile, Avda. Santa Rosa 11315, La Pintana, Santiago 8820808, Chile" |
| ISSN/ISBN: | 2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking) |
| Abstract: | "The leafroller Proeulia auraria (Clarke) (Lepidoptera: Tortricidae) is a native, polyphagous, and growing pest of several fruit crops in Chile; it also has quarantine importance to several markets, thus tools for management are needed. Using synthetic pheromone compounds, we conducted field trials to optimize the blend for monitoring, and to determine the activity period of rubber septa aged under field conditions. We concluded that septa loaded with 200 mug of E11-14:OAc + 60 mug E11-14:OH allowed for efficient trap captures for up to 10 weeks. Using this blend, we studied the phenology of adult males in vineyards, apple, and blueberry orchards, identifying two long flight cycles per season, lasting from September to May and suggesting 2-3 generations during the season. No or low adult activity was observed during January and between late May and late August. Furthermore, mating disruption (MD) field trials showed that application of 250 pheromone point sources using the dispenser wax matrix SPLAT (Specialized Pheromone and Lure Application Technology, 10.5% pheromone) with a total of 78 g/ha of the blend described above resulted in trap shutdown immediately after application, and mating disruption >99% in all orchards for at least 5 months. We concluded that MD is feasible for P. auraria, needing now the development of a commercial product and the strategy (and protocols) necessary to control this pest in conventional and organic orchards in Chile. As far as we know, this is the first report on MD development against a South American tortricid pest" |
| Keywords: | SPLAT wax matrix apple orchards blueberry orchards field trials moth phenology pheromone remaining pheromone in point sources vineyards; |
| Notes: | "PubMed-not-MEDLINEFlores, M Fernanda Bergmann, Jan Ballesteros, Carolina Arraztio, Diego Curkovic, Tomislav eng FIA PYT 0014-2014/Agricultural Research Found/ Switzerland 2021/08/07 Insects. 2021 Jul 9; 12(7):625. doi: 10.3390/insects12070625" |
