Abstract

DAGATTI, Carla Vanina  and  CRISTINA BECERRA, Violeta. Fitting a phenological model to predict the behavior of Lobesia botrana (Lepidoptera: Tortricidae) in a Mendoza vineyard, Argentina. Rev. Soc. Entomol. Argent. [online]. 2015, vol.74, n.3-4, pp.117-122. ISSN 0373-5680.

The variable that most affects the development of Lobesia botrana (Den & Schiff) is temperature, which relationship has been studied using mathematical models, as Touzeau. L. botrana was first identified in 2010 in Mendoza. The aim of this study is to adjust the model of Touzeau to predict the behavior of the moth. The study has been conducted since 2012 in a vineyard cv. Malbec. Pheromone traps have been used. The temperature is recorded by a datalogger sensor. Thermal integral is calculated with Touzeau`s formula using a threshold of 10º C as July 1st of each year. Results indicate that the first flight happened on October 18th the first year and October 20th the second year with 204. 05 ± 10.73 degree days. The second occurred in the first ten days of December in two following seasons with 728.34 ± 41.95 degree days. The third took place during the last fortnight of January in both years with 1329. 08 ± 151.35 degree days. The fourth occurred in mid-February for two seasons with 1721. 84 ± 116.63 degree days. These results are useful to predict the onset of the pest and as a tool to set an alarm system for producers.

Keywords : Pest management; Temperature accumulation; Touzeau model.

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