D3081: Monitoring of Lobesia botrana using attractive semiochemicals and LED-UV in vineyards of Central Chile and Catalonia, Northeastern Spain

Monday, November 11, 2024

9:00 AM – 5:00 PM MST

Location: Phoenix Convention Center, Exhibit Hall 6, PCC

Presenting Author(s)

Yasir Islam, Ph.D.

PhD Student
Centro de Ecología Molecular y Funcional
Talca, Maule, Chile

Co-Author(s)

MP

Michele Preti

Researcher
ASTRA Innovazione e Sviluppo Test Facility
Faenza, Emilia-Romagna, Italy
AK

Alan Knight

Researcher
Instar Biologicals
Yakima, Washington
EB

Esteban Basoalto

Researcher
Universidad Austral de Chile
Valdivia, Los Rios, Chile
DB

Dolors Bosch

Researcher
Institute for Agrifood Research and Technology
Lleida, Catalonia, Spain
AP

Ainara Peñalver-Cruz

Researcher
Institute for Agrifood Research and Technology
Lleida, Catalonia, Spain
MR

Marcela Rodríguez

Researcher
Universidad de Concepción
Concepcion, Bio-Bio, Chile
EF

Eduardo Fuentes-Contreras

Professor
Centro de Ecología Molecular y Funcional
Talca, Maule, Chile

Lobesia botrana (Lepidoptera: Tortricidae) is a major pest of vineyards distributed across Europe, the Middle East, Argentina, and Chile. Monitoring of adult males with sexual pheromones, is not effective in vineyards that have been treated with mating disruption (MD) methods. This study assessed a combination of 2-phenylethanol (2-PET) and acetic acid (AA) with light-emitting diodes (LEDs) of various wavelengths: i) ultraviolet (UV), ii) green, and iii) blue compared to 2-PET+AA without LEDs and standard sex pheromone lures for monitoring L. botrana populations. The trials were performed in vineyards in Catalonia (NE Spain) and Maule (Central Chile) subjected to MD. In Spain, the study covered the second and third flight periods from early June (early summer) to late August (late summer) in 2023, and in Chile, from late September (early spring) to late March (late summer) in 2021/2022, 2022/2023 and 2023/2024. Pheromone traps captured only male L. botrana, while 2-PET+AA, with or without UV, green, and blue LEDs, attracted both males and females. During late summer, the combination of 2-PET+AA with UV-LEDs significantly captured more males and females than other treatments. Blue and green LEDs also attracted L. botrana but with lower capture rates than UV-LEDs. The use of 2-PET+AA with UV LEDs also resulted in non-target captures of other Lepidoptera, Diptera, Trichoptera, and Neuroptera. These findings indicate that 2-PET+AA, particularly with UV-LEDs, improved L. botrana monitoring in vineyards, providing valuable insights for pest management in viticultural regions with extensive use of MD.