{"id":44240,"date":"2024-10-23T16:41:39","date_gmt":"2024-10-23T14:41:39","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=article-foret-nature&#038;p=44240"},"modified":"2024-10-23T16:41:39","modified_gmt":"2024-10-23T14:41:39","slug":"la-chalarose-du-frene-en-wallonie-etat-des-lieux","status":"publish","type":"article-foret-nature","link":"https:\/\/foretnature.be\/en\/article-foret-nature\/la-chalarose-du-frene-en-wallonie-etat-des-lieux\/","title":{"rendered":"La chalarose du fr\u00eane en Wallonie : \u00e9tat des lieux"},"content":{"rendered":"<p>Fiche d\u2019identit\u00e9 : maladie \u00e9mergente li\u00e9e \u00e0 un champignon invasif agressif, qui contamine les pousses de 1 \u00e0 2 ans via les feuilles ; apparue en Pologne dans les ann\u00e9es \u201890, formellement identifi\u00e9e en 2006 ; nombreux pays europ\u00e9ens touch\u00e9s par cette maladie ; premiers cas identifi\u00e9s en France en 2008, en 2010 en Belgique. Sympt\u00f4mes de chalarose observ\u00e9s en 2011 en Wallonie : dess\u00e8chement des rameaux les plus externes du houppier ; fl\u00e9trissements des feuilles, feuillage noirci ou absent sur les rameaux de l\u2019ann\u00e9e ; n\u00e9croses corticales \u00e0 la base des rameaux de l\u2019ann\u00e9e ou de l\u2019ann\u00e9e pr\u00e9c\u00e9dentes ; n\u00e9croses sur le tronc ou au collet ; d\u00e9coloration du bois (aubier) dans les zones atteintes de n\u00e9croses, la qualit\u00e9 technologique du bois ne semblant pas affect\u00e9e par le champignon ; sensibilit\u00e9 \u00e0 d\u2019autres champignons ou insectes. Mesures de gestion (au vu de la situation en ao\u00fbt 2011) : ne plus proc\u00e9der \u00e0 des plantations de fr\u00eanes en attendant plus de donn\u00e9es sur la biologie de l\u2019esp\u00e8ce ; mesures de suppression de la r\u00e9g\u00e9n\u00e9ration uniquement lorsque l\u2019avenir de la majorit\u00e9 des brins est compromis ; r\u00e9colter les arbres atteints par la maladie et arriv\u00e9s \u00e0 des dimensions d\u2019exploitation correcte ; dans les jeunes peuplements touch\u00e9s, r\u00e9aliser des \u00e9claircies au profit des arbres sains ou ne pr\u00e9sentant pas de sympt\u00f4mes. Conclusions : il est conseill\u00e9 de profiter du march\u00e9 actuel (90 \u20ac\/m\u00b3 sur pied) et de r\u00e9aliser au cours des prochains mois les arbres m\u00fbrs montrant des signes de d\u00e9p\u00e9rissement ; il est \u00e0 craindre que, \u00e0 moyen ou long terme, vu les incertitudes sur les peuplements en r\u00e9g\u00e9n\u00e9ration ou en cours de croissance, l\u2019approvisionnement en fr\u00eane ne puisse plus satisfaire une demande soutenue.<\/p>","protected":false},"excerpt":{"rendered":"<p>Fiche d\u2019identit\u00e9 : maladie \u00e9mergente li\u00e9e \u00e0 un champignon invasif agressif, qui contamine les pousses de 1 \u00e0 2 ans via les feuilles ; apparue en Pologne dans les ann\u00e9es \u201890, formellement identifi\u00e9e en 2006 ; nombreux pays europ\u00e9ens touch\u00e9s par cette maladie ; premiers cas identifi\u00e9s en France en 2008, en 2010 en Belgique. [&hellip;]<\/p>","protected":false},"featured_media":0,"template":"","categories":[49],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La chalarose du fr\u00eane en Wallonie : \u00e9tat des lieux - For\u00eat.Nature<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/foretnature.be\/en\/article-foret-nature\/la-chalarose-du-frene-en-wallonie-etat-des-lieux\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La chalarose du fr\u00eane en Wallonie : \u00e9tat des lieux - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Fiche d\u2019identit\u00e9 : maladie \u00e9mergente li\u00e9e \u00e0 un champignon invasif agressif, qui contamine les pousses de 1 \u00e0 2 ans via les feuilles ; apparue en Pologne dans les ann\u00e9es \u201890, formellement identifi\u00e9e en 2006 ; nombreux pays europ\u00e9ens touch\u00e9s par cette maladie ; premiers cas identifi\u00e9s en France en 2008, en 2010 en Belgique. 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