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Avaliação de feromonas na monitorização de Bichado-da-Castanha, Cydia Splendana (Hubner) (Lepidoptera: Torticidae) na ilha Terceira, Açores

2012; Sociedade de Ciências Agrárias de Portugal; Volume: 35; Issue: 2 Linguagem: Inglês

10.19084/rca.16268

2183-041X

Ana Isabel Santos, Jorge Manuel Teixeira de Azevedo, R. Pimentel, Lúcia Ventura, António Mexia, David Lopes,

Nuts composition and effects

Chestnut moth, Cydia splendana, is the most important pest affecting the chestnut production on Terceira Island, Azores, responsible by important damages at the quality level. To evaluate the economic impact of this pest, was determinated the fruits infestation rate on a sample of 500 fruits collected in each parcel, in total of 6 parcels 4 of them distributed at the southern part of the Island in the villages of Terra-Cha and S. Pedro and 2 on the northern part, at Biscoitos. In 2010, from July to October, 3 sexual pheromones specific for this specie: Oecos, Pherobank and Syngenta were tested in an orchard in the village of Terra-Cha in a survey in which the pheromones were distributed in Delta traps arranged alternately, spaced 25m between them. The results obtained points to Pherobank pheromone as the more efficient (75%) in capturing the chestnut adults in Terceira climatic conditions.