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Master Thesis

Animation et amélioration d'un réseau de pièges à phéromones contre les tordeuses de la grappe dans les vignobles du Médoc et du Bourgeais/Blayais

Abstract : Since a few years, the need to protect our environment becoming a major concern, the development of new protection ways in agriculture has become a priority. Amongst these means, the pest management needs a good knowledge of the pest. In viticulture, this technique is especially used to deal against the berry moths, L.botrana and E. ambiguella. A grid of pheromones traps has been set in the Bordeaux vineyards in order to monitor the flight dynamics of these butterflies, and more specifically in Médoc and Bourgeais/Blayais. The population dynamics and knowledge of the life cycle of moths predict the dates of observations of eggs and caterpillars responsible for damage to the vine. It is these observations, compared to thresholds that will justify the positioning of insecticides. One objective of the network is to highlight the differences in pressure between growing zones. Over the years the observations have to divide the area into four zones of the Médoc smaller. Using data from the network in 2012, the choice of these areas was confirmed. In addition, links have been found between geographical areas quite different. Finally, using a geostatistical method, the presence of a spatial structure could not be demonstrated in the area of Médoc lack of a trap density and a sufficiently high pressure during this year.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-00743459
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Submitted on : Tuesday, November 20, 2012 - 9:01:20 AM
Last modification on : Friday, October 23, 2020 - 4:45:32 PM
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Aurélie Paillas. Animation et amélioration d'un réseau de pièges à phéromones contre les tordeuses de la grappe dans les vignobles du Médoc et du Bourgeais/Blayais. Sciences agricoles. 2012. ⟨dumas-00743459⟩

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