Giesco
FORECASTING THE FLIGHT ACTIVITY OF Lobesia botrana IN FIVE SITES OF MENDOZA, ARGENTINA PREDICCIÓN DE LOS VUELOS DE LA POLILLA DE LA VID LOBESIA BOTRANA EN CINCO SITIOS DE MENDOZA, ARGENTINA
DAGATTI, Carla1; BECERRA, Violeta1; BATTAGLIA, Mª José2; LORENTE, Carolina2 1 Estación Experimental Agropecuaria INTA Mendoza. San Martín 3853, Luján de Cuyo (5507), Mendoza, Argentina. Centro de Operaciones de Campo de Programas Fitosanitarios SENASA Centro Regional Cuyo. Azcuénaga 166, Luján de Cuyo(5507), Mendoza, Argentina. 2 *Corresponding author: becerra.violeta@inta.gob.ar
Abstract: Lobesiabotrana is a quarantine pest for Argentina, detected in 2010 in Mendoza. Earlier stages of larvae feed on flowers and fruits. Wounds allow the development of fungi that decreases yield and quality. INTA is studying a phenological model based on day-degrees to predict the pest behavior. The study was conducted since 2015 in five different microclimatic growing areas of Mendoza. 30 pheromone traps have been used at each monitoring site. Meteorological data were extracted from Department of Agriculture and Climate Contingency of Mendoza. The thermal integral was calculated with Touzeau formula. Moth presence data were compared at each location, peak of adult population of four generations was quantified and the date of occurrence was validated with Touzeau models. The results were useful to predict the pest outbreak and establish an alarm system for vineyards growers. During the period 2016-2017, the model showed an advancement of at least 15 days in all generations and sites studied.
Keywords: Lobesiabotrana, European grapevine moth, degree days
Abstract: Lobesiabotrana is a quarantine pest for Argentina, detected in 2010 in Mendoza. Earlier stages of larvae feed on flowers and fruits. Wounds allow the development of fungi that decreases yield and quality. INTA is studying a phenological model based on day-degrees to predict the pest behavior. The study was conducted since 2015 in five different microclimatic growing areas of Mendoza. 30 pheromone traps have been used at each monitoring site. Meteorological data were extracted from Department of Agriculture and Climate Contingency of Mendoza. The thermal integral was calculated with Touzeau formula. Moth presence data were compared at each location, peak of adult population of four generations was quantified and the date of occurrence was validated with Touzeau models. The results were useful to predict the pest outbreak and establish an alarm system for vineyards growers. During the period 2016-2017, the model showed an advancement of at least 15 days in all generations and sites studied.
Keywords: Lobesiabotrana, European grapevine moth, degree days