{"id":1324,"date":"2005-08-22T18:17:00","date_gmt":"2005-08-22T18:17:00","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogjardin\/2005\/08\/22\/la-chenille-pro\/"},"modified":"2012-08-27T09:47:11","modified_gmt":"2012-08-27T09:47:11","slug":"la-chenille-pro","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogjardin\/2005\/08\/22\/la-chenille-pro\/","title":{"rendered":"La chenille processionnaire gagne du terrain"},"content":{"rendered":"<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogjardin\/files\/2012\/08\/pp14.jpg\"><img loading=\"lazy\" decoding=\"async\" height=\"268\" alt=\"Pp14\" src=\"http:\/\/www.leblogjardin.com\/images\/pp14.jpg\" width=\"200\"  \/><\/a> Outre les ravages qu&rsquo;elle occasionne \u00e0 de nombreuses essences de pin, notamment aux pins maritimes dans la for\u00eat des landes , la chenille processionnaire est tr\u00e8s urticante pour l&rsquo;homme et pour les animaux; si elle se cantonnait jusqu&rsquo;ici aux r\u00e9gions du sud de la France, sa progression vers le nord, et dans les montagnes, en altitude, est due semble-t&rsquo;il au r\u00e9chauffement climatique de la plan\u00e8te. Vous rep\u00e8rerez facilement sa pr\u00e9sence aux cocons soyeux ornant les extr\u00e9mit\u00e9s de nombreuses esp\u00e8ces de pin, entre octobre et mars. <\/p>\n<p>C&rsquo;est au cours de l&rsquo;\u00e9t\u00e9 que les papillons d\u00e9posent leurs oeufs autour des branches de pin; les jeunes chenilles, qui \u00e9closent rapidement, se nourrissent alors d&rsquo; aiguilles de pin durant la nuit; elles se prot\u00e8gent du froid dans le nid qu&rsquo;elles ont confectionn\u00e9 et y  trouvent refuge le jour. Au printemps, elles sortent \u00e0 la queue-leu-leu, d&rsquo;o\u00f9 leur nom, et s&rsquo;enterrent, \u00e0 quelques centim\u00e8tres dans le sol; c&rsquo;est l\u00e0 que se d\u00e9roule la nymphose, et s&rsquo;ach\u00e8ve le cycle.<\/p>\n<p>Dans le but de lutter contre ce ph\u00e9nom\u00e8ne, les chercheurs de l&rsquo; <a href=\"http:\/\/www.inra.fr\/dpenv\/pa.htm\">INRA<\/a> ont mis en place un dispositif exp\u00e9rimental utilisant les <a href=\"http:\/\/www.jardin-bio.com\/boutic\/bou_recal.cgi?recmc=carpocapse\">pi\u00e8ges \u00e0 ph\u00e9romones<\/a> sexuelles, afin de capturer les papillons, pour mieux conna\u00eetre leur parcours et pr\u00e9voir l&rsquo;intensit\u00e9 de leur attaque.<\/p>\n<p>Les m\u00e9thodes actuelles d&rsquo;\u00e9pendage d&rsquo;insecticides,( m\u00eame si, dit-on, ils sont sans cons\u00e9quence sur l&rsquo;environnement), ne font pas l&rsquo;unanimit\u00e9; <\/p>\n<p>Des solutions visant \u00e0 \u00e9loigner les chenilles au lieu de les tuer sont \u00e0 l&rsquo;\u00e9tude; on a remarqu\u00e9 que ces ravageuses seraient incommod\u00e9es par les odeurs emises par le ch\u00eane et le bouleau&#8230;de l\u00e0 l&rsquo;id\u00e9e de prot\u00e9ger les for\u00eats de pin maritimes existantes en plantant une ceinture de ch\u00eanes et de bouleaux, ou en les m\u00ealant aux for\u00eats, tels des sentinelles bienveillantes, \u00e0 effet uniquement r\u00e9pulsif !<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Outre les ravages qu&rsquo;elle occasionne \u00e0 de nombreuses essences de pin, notamment aux pins maritimes dans la for\u00eat des landes , la chenille processionnaire est tr\u00e8s urticante pour l&rsquo;homme et pour les animaux; si elle se cantonnait jusqu&rsquo;ici aux r\u00e9gions du sud de la France, sa progression vers le nord, et dans les montagnes, en [&hellip;]<\/p>\n","protected":false},"author":358,"featured_media":2089,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1324","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - 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