{"id":25594,"date":"2024-08-14T16:27:40","date_gmt":"2024-08-14T14:27:40","guid":{"rendered":"https:\/\/www.irbab-kbivb.be\/?p=25594"},"modified":"2024-08-14T16:27:45","modified_gmt":"2024-08-14T14:27:45","slug":"maladies-foliaires-ne-pas-confondre-pseudomonas-et-cercosporiose","status":"publish","type":"post","link":"https:\/\/www.irbab-kbivb.be\/fr\/maladies-foliaires-ne-pas-confondre-pseudomonas-et-cercosporiose\/","title":{"rendered":"Maladies foliaires : Ne pas confondre Pseudomonas et cercosporiose"},"content":{"rendered":"\n

\"\"<\/a>Beaucoup de parcelles du r\u00e9seau se colorent en violet fonc\u00e9 \u00e0 cause de la pr\u00e9sence de Cercosporiose. Certains observateurs nous signalent \u00e9galement la pr\u00e9sence de taches de Pseudomonas syringae <\/em>dans leur parcelle.<\/em> Cette maladie est favoris\u00e9e par les conditions chaudes et humides et souvent cons\u00e9quentes des pluies d\u2019orage. Il est important de distinguer ces deux maladies et de traiter (que) si le seuil pour la Cercosporiose est atteint. L\u2019absence de conidies (fructifications) \u00e0 l\u2019int\u00e9rieur des taches de Pseudomonas <\/em>est une caract\u00e9ristique importante<\/p>\n

Les sympt\u00f4mes de Pseudomonas en betterave (voir photo) ressemblent \u00e0 la Cercosporiose. La bact\u00e9rie provoque des taches n\u00e9crotiques brunes avec un bord fonc\u00e9. Elles sont souvent plus grandes que les taches de cercosporiose (5-6 mm) et sont de forme irr\u00e9guli\u00e8re. Les taches de Cercospora sont reconnaissables \u00e0 la pr\u00e9sence d\u2019un feutre gris (fructifications noires et filaments blancs visibles \u00e0 la loupe). Ces fructifications manquent dans les taches de Pseudomonas. Aucun traitement n\u2019est recommand\u00e9 contre Pseudomonas.<\/p>\n","protected":false},"excerpt":{"rendered":"

Beaucoup de parcelles du r\u00e9seau se colorent en violet fonc\u00e9 \u00e0 cause de la pr\u00e9sence de Cercosporiose. Certains observateurs nous signalent \u00e9galement la pr\u00e9sence de taches de Pseudomonas syringae dans leur parcelle. Cette maladie est favoris\u00e9e par les conditions chaudes et humides et souvent cons\u00e9quentes des pluies d\u2019orage. Il est important de distinguer ces deux […]<\/p>\n","protected":false},"author":3,"featured_media":25589,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":2,"footnotes":""},"categories":[2,221],"tags":[243],"class_list":["post-25594","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-betterave","category-maladies-foliaires","tag-messages"],"yoast_head":"\nMaladies foliaires : Ne pas confondre Pseudomonas et cercosporiose - IRBAB-KBIVB<\/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:\/\/www.irbab-kbivb.be\/fr\/maladies-foliaires-ne-pas-confondre-pseudomonas-et-cercosporiose\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Maladies foliaires : Ne pas confondre Pseudomonas et cercosporiose - IRBAB-KBIVB\" \/>\n<meta property=\"og:description\" content=\"Beaucoup de parcelles du r\u00e9seau se colorent en violet fonc\u00e9 \u00e0 cause de la pr\u00e9sence de Cercosporiose. Certains observateurs nous signalent \u00e9galement la pr\u00e9sence de taches de Pseudomonas syringae dans leur parcelle. Cette maladie est favoris\u00e9e par les conditions chaudes et humides et souvent cons\u00e9quentes des pluies d\u2019orage. 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