{"id":689,"date":"2025-07-28T17:13:51","date_gmt":"2025-07-28T15:13:51","guid":{"rendered":"https:\/\/viroflayenvironnement.fr\/?page_id=689"},"modified":"2025-09-02T19:02:18","modified_gmt":"2025-09-02T17:02:18","slug":"lencre-du-chataignier","status":"publish","type":"page","link":"https:\/\/viroflayenvironnement.fr\/index.php\/lencre-du-chataignier\/","title":{"rendered":"L&#8217;encre du ch\u00e2taignier"},"content":{"rendered":"\n<pre class=\"wp-block-verse\"><br><br><br><br><br><br><br><strong>Lettre de Viroflay Environnement \u00e0 l\u2019INRA<\/strong><br><strong>J.Ligneau<br>8 rue des Marais, 78220, Viroflay<br><br><br>Bonjour Madame, Monsieur,<br>Mon association s\u2019adressait \u00e0 vous car il y a environ une vingtaine d\u2019ann\u00e9es, j\u2019avais (J.Ligneau) rencontr\u00e9 Mr Pinon concernant la Graphiose de l\u2019orme.<br>Aujourd\u2019hui, nous nous adressons \u00e0 vous concernant l\u2019encre du Ch\u00e2taigner qui s\u00e9vi.<br>Pourriez-vous r\u00e9pondre \u00e0 nos questions concernant ce fl\u00e9au :<br>\u2022\tDepuis quand est apparue cette maladie ?<br>\u2022\tD\u2019o\u00f9 provient-elle ?<br>\u2022\tEst-ce qu\u2019elle est p\u00e9riodique \u00e0 travers les deux derniers si\u00e8cles comme la Graphiose de l\u2019orme ?<br>\u2022\tEst-elle unique aux ch\u00e2taignes comme la graphiose de l\u2019orme ?<br>\u2022\tDans quelle p\u00e9riode de son existence l\u2019arbre est atteint ?<br>\u2022\tQuels sont les identifications visuelles sur l\u2019arbre atteint ?<br>\u2022\tExiste-t-il des terrains, altitude ou d\u2019autres facilit\u00e9s pour que l\u2019encre s\u2019impose ?<br>\u2022\tL\u2019encre est-il un parasite, un insecte ou un champignon ?<br>\u2022\tN\u2019y a-t-il pas des recherches pour savoir si la nature ne lui apporte pas un ennemi naturel ?<br>\u2022\tExiste-t-il aujourd\u2019hui \u00e0 travers les recherches un espoir, si oui lequel ?<br>Pour les ormes, des hybrides ont \u00e9t\u00e9 un rempart contre la Graphiose.<br>Par ailleurs pour les ormes plusieurs sortes existent : le champ\u00eatre (beaucoup atteint), celui des montagne (partiellement atteint), le p\u00e9doncul\u00e9 (non atteint) \u00e0 ma connaissance.<br>Existe-t-il des ch\u00e2taigniers diff\u00e9rents plus ou moins atteints ?<br>Un ch\u00e2taigner isol\u00e9 peut-il \u00eatre moins sollicit\u00e9 qu\u2019un peuplement ?<br>Le r\u00e9chauffement climatique fait il partit des causes \u00e0 effet ?<br>Pour conclure, existe-t-il d\u2019autres maladies concernant les ch\u00e2taigniers ?<br>Si nous avons fait l\u2019impasse sur des questions, n\u2019h\u00e9sitez pas \u00e0 nous faire savoir.<br>En vous remerciant de votre participation.<br>Cordialement<br>J.Ligneau : Pr\u00e9sident de Viroflay Environnement<br><br>N\u2019ayant aucune r\u00e9ponse sur ce sujet \u00e0 ce jour, il nous apparait qu\u2019aucune parade n\u2019existe.<\/strong><br><\/pre>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/viroflayenvironnement.fr\/wp-content\/uploads\/2025\/07\/encre_du_chataignier.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of encre_du_chataignier.\"><\/object><a id=\"wp-block-file--media-d30c60f8-bae5-4ebf-8ab2-785818fab5a1\" href=\"https:\/\/viroflayenvironnement.fr\/wp-content\/uploads\/2025\/07\/encre_du_chataignier.pdf\">encre_du_chataignier<\/a><a href=\"https:\/\/viroflayenvironnement.fr\/wp-content\/uploads\/2025\/07\/encre_du_chataignier.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-d30c60f8-bae5-4ebf-8ab2-785818fab5a1\">T\u00e9l\u00e9charger<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Lettre de Viroflay Environnement \u00e0 l\u2019INRAJ.Ligneau8 rue des Marais, 78220, ViroflayBonjour Madame, Monsieur,Mon association s\u2019adressait \u00e0 vous car il y a environ une vingtaine d\u2019ann\u00e9es, j\u2019avais (J.Ligneau) rencontr\u00e9 Mr Pinon concernant la Graphiose de l\u2019orme.Aujourd\u2019hui, nous nous adressons \u00e0 vous concernant l\u2019encre du Ch\u00e2taigner qui s\u00e9vi.Pourriez-vous r\u00e9pondre \u00e0 nos questions concernant ce fl\u00e9au :\u2022 Depuis [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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