{"id":28346,"date":"2026-06-25T13:39:18","date_gmt":"2026-06-25T11:39:18","guid":{"rendered":"https:\/\/www.irbab-kbivb.be\/?p=28346"},"modified":"2026-06-25T13:39:22","modified_gmt":"2026-06-25T11:39:22","slug":"25-juin-avertissement-maladies-foliaires-lancement-des-observations-des-maladies-foliaires","status":"publish","type":"post","link":"https:\/\/www.irbab-kbivb.be\/fr\/25-juin-avertissement-maladies-foliaires-lancement-des-observations-des-maladies-foliaires\/","title":{"rendered":"25 Juin &#8211; Avertissement maladies foliaires : Lancement des observations des maladies foliaires"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Kaart-FR-25-06-2026.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-28341\" src=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Kaart-FR-25-06-2026.png\" alt=\"\" width=\"800\" height=\"337\" srcset=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Kaart-FR-25-06-2026.png 800w, https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Kaart-FR-25-06-2026-300x126.png 300w, https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Kaart-FR-25-06-2026-768x324.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n\n\n\n<p>\u00c0 partir de cette semaine, nous avons commenc\u00e9 \u00e0 contr\u00f4ler plusieurs de nos parcelles d\u2019observation pour d\u00e9tecter la pr\u00e9sence de maladies foliaires. Consultez la situation actuelle sur notre site internet : <a href=\"https:\/\/www.google.com\/maps\/d\/edit?hl=fr&amp;mid=1pcpeOp7dMomqyZnbnsD81hQWazH6u_w&amp;ll=50.44259958413889%2C5.617649089435028&amp;z=10\">Carte des maladies foliaires<\/a>.<\/p>\n<p>Les temp\u00e9ratures \u00e9lev\u00e9es, les averses du week-end dernier et les conditions encore humides observ\u00e9es le matin constituent un cocktail id\u00e9al pour l\u2019infection des feuilles par les champignons pathog\u00e8nes. Les sympt\u00f4mes n\u2019apparaissent toutefois qu\u2019apr\u00e8s une phase latente.<\/p>\n<p>Conform\u00e9ment aux principes de la lutte int\u00e9gr\u00e9e (IPM), un traitement n\u2019est justifi\u00e9 que lorsque le seuil d\u2019intervention est atteint. Vous trouverez ci-dessous un aper\u00e7u des seuils d\u2019intervention.<\/p>\n<p><a href=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Schermafbeelding-seuil-de-traitement-25-06-2026.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-28334\" src=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Schermafbeelding-seuil-de-traitement-25-06-2026.png\" alt=\"\" width=\"727\" height=\"272\" srcset=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Schermafbeelding-seuil-de-traitement-25-06-2026.png 727w, https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Schermafbeelding-seuil-de-traitement-25-06-2026-300x112.png 300w\" sizes=\"auto, (max-width: 727px) 100vw, 727px\" \/><\/a><\/p>\n\n\n\n<p>Pour la cercosporiose, nous recommandons d\u2019effectuer un premier traitement d\u00e8s l\u2019apparition des premiers sympt\u00f4mes sur les feuilles. Cette recommandation s\u2019applique aussi bien aux vari\u00e9t\u00e9s sensibles qu\u2019aux vari\u00e9t\u00e9s plus tol\u00e9rantes. La r\u00e9ussite de la lutte repose avant tout sur une premi\u00e8re intervention r\u00e9alis\u00e9e au bon moment, quel que soit le niveau de tol\u00e9rance de la vari\u00e9t\u00e9.<\/p>\n<p>Nous invitons donc les producteurs \u00e0 rester particuli\u00e8rement vigilants quant \u00e0 l\u2019apparition des premiers sympt\u00f4mes de cercosporiose, \u00e9tant donn\u00e9 les conditions tr\u00e8s favorables au d\u00e9veloppement du champignon.<\/p>\n<p>Il est \u00e9galement important de distinguer la cercosporiose des sympt\u00f4mes caus\u00e9s par <strong>Pseudomonas<\/strong>. Cette bact\u00e9rie est actuellement observ\u00e9e dans de nombreuses parcelles. Les taches provoqu\u00e9es par Pseudomonas apparaissent g\u00e9n\u00e9ralement \u00e0 la suite de blessures foliaires (par exemple apr\u00e8s un \u00e9pisode de gr\u00eale). Elles se pr\u00e9sentent sous forme de taches brunes entour\u00e9es d\u2019un liser\u00e9 fonc\u00e9 et peuvent fortement ressembler aux sympt\u00f4mes de la cercosporiose.<\/p>\n<p>La principale diff\u00e9rence r\u00e9side dans l\u2019absence de petits points noirs au centre des l\u00e9sions de Pseudomonas. Ces points noirs, visibles sous une loupe, correspondent aux fructifications (porte-spores) du champignon responsable de la cercosporiose. Aucun traitement n\u2019est n\u00e9cessaire contre Pseudomonas, d\u2019o\u00f9 l\u2019importance de pouvoir distinguer correctement ces deux types de sympt\u00f4mes.<\/p>\n<p>La diff\u00e9rence entre les premiers sympt\u00f4mes de la cercosporiose et ceux de Pseudomonas est illustr\u00e9e ci-dessous.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Cerco-en-Pseudo-25-05-2026.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-28330\" src=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Cerco-en-Pseudo-25-05-2026.png\" alt=\"\" width=\"800\" height=\"901\" srcset=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Cerco-en-Pseudo-25-05-2026.png 800w, https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Cerco-en-Pseudo-25-05-2026-266x300.png 266w, https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Cerco-en-Pseudo-25-05-2026-768x865.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c0 partir de cette semaine, nous avons commenc\u00e9 \u00e0 contr\u00f4ler plusieurs de nos parcelles d\u2019observation pour d\u00e9tecter la pr\u00e9sence de maladies foliaires. Consultez la situation actuelle sur notre site internet : Carte des maladies foliaires. Les temp\u00e9ratures \u00e9lev\u00e9es, les averses du week-end dernier et les conditions encore humides observ\u00e9es le matin constituent un cocktail id\u00e9al [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":28330,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":104,"footnotes":""},"categories":[2,375,221,129],"tags":[243],"class_list":["post-28346","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-betterave","category-betteraves","category-maladies-foliaires","category-protection-des-plantes","tag-messages"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>25 Juin - Avertissement maladies foliaires : Lancement des observations des maladies foliaires - 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\/25-juin-avertissement-maladies-foliaires-lancement-des-observations-des-maladies-foliaires\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"25 Juin - Avertissement maladies foliaires : Lancement des observations des maladies foliaires - IRBAB-KBIVB\" \/>\n<meta property=\"og:description\" content=\"\u00c0 partir de cette semaine, nous avons commenc\u00e9 \u00e0 contr\u00f4ler plusieurs de nos parcelles d\u2019observation pour d\u00e9tecter la pr\u00e9sence de maladies foliaires. Consultez la situation actuelle sur notre site internet : Carte des maladies foliaires. Les temp\u00e9ratures \u00e9lev\u00e9es, les averses du week-end dernier et les conditions encore humides observ\u00e9es le matin constituent un cocktail id\u00e9al [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.irbab-kbivb.be\/fr\/25-juin-avertissement-maladies-foliaires-lancement-des-observations-des-maladies-foliaires\/\" \/>\n<meta property=\"og:site_name\" content=\"IRBAB-KBIVB\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-25T11:39:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-25T11:39:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2026\/06\/Cerco-en-Pseudo-25-05-2026.png\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"901\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Marion\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Marion\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.irbab-kbivb.be\\\/fr\\\/25-juin-avertissement-maladies-foliaires-lancement-des-observations-des-maladies-foliaires\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.irbab-kbivb.be\\\/fr\\\/25-juin-avertissement-maladies-foliaires-lancement-des-observations-des-maladies-foliaires\\\/\"},\"author\":{\"name\":\"Marion\",\"@id\":\"https:\\\/\\\/www.irbab-kbivb.be\\\/#\\\/schema\\\/person\\\/dad6fe34d3ac93cce3720797f132a2e5\"},\"headline\":\"25 Juin &#8211; 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