{"id":26488,"date":"2025-05-15T14:42:30","date_gmt":"2025-05-15T12:42:30","guid":{"rendered":"https:\/\/www.irbab-kbivb.be\/?p=26488"},"modified":"2025-05-15T14:42:32","modified_gmt":"2025-05-15T12:42:32","slug":"ravageurs-evolution-des-pucerons-verts","status":"publish","type":"post","link":"https:\/\/www.irbab-kbivb.be\/fr\/ravageurs-evolution-des-pucerons-verts\/","title":{"rendered":"Ravageurs\u00a0: \u00e9volution des pucerons verts"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2025\/05\/Larven-lieveheersbeestje-geknipt.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"rounded alignleft wp-image-26483 size-medium\" src=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2025\/05\/Larven-lieveheersbeestje-geknipt-297x300.jpg\" alt=\"\" width=\"297\" height=\"300\" srcset=\"https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2025\/05\/Larven-lieveheersbeestje-geknipt-297x300.jpg 297w, https:\/\/www.irbab-kbivb.be\/wp-content\/uploads\/2025\/05\/Larven-lieveheersbeestje-geknipt.jpg 428w\" sizes=\"auto, (max-width: 297px) 100vw, 297px\" \/><\/a>Les observations de cette semaine montrent la pr\u00e9sence de pucerons verts dans un tiers des 93 parcelles suivies. 13% ont atteint le seul de traitement depuis la semaine derni\u00e8re. Une parcelle a atteint le seuil pour le deuxi\u00e8me traitement. Dans 47 parcelles, aucun puceron vert n\u2019a \u00e9t\u00e9 observ\u00e9.<\/p>\n<p>La carte avec la pression des pucerons est disponible ici : <a href=\"https:\/\/www.google.com\/maps\/d\/edit?mid=1mvuX3LDjXMTqfcCmTqUfNI3O3H-v_Fk&amp;usp=sharing\">Carte pression des pucerons<\/a><\/p>\n<p>Depuis le d\u00e9but de saison, un tiers des parcelles a atteint le seuil de traitement pour les pucerons verts.\u00a0<\/p>\n<p>La pr\u00e9sence de pucerons verts est plus importante dans l\u2019Est du Pays (Namur, Li\u00e8ge). Dans l\u2019Ouest du Pays, les populations de pucerons verts restent faibles, selon les observations r\u00e9alis\u00e9es.<\/p>\n<p>Il est important de signaler que la pr\u00e9sence de pucerons varie fortement de champ \u00e0 champ. Il est donc indispensable de contr\u00f4ler les champs individuellement.<\/p>\n<p>\u00a0<\/p>\n<p>Des colonies de pucerons noirs sont toujours observ\u00e9es, mais leur progression est \u00e9galement ralentie. 10% des parcelles pr\u00e9sentent des colonies plus importantes de pucerons noirs. Des auxiliaires (coccinelles, cantharides, larve de syrphe et chrysope) sont observ\u00e9s dans deux tiers des parcelles.<\/p>\n<p>\u00a0<\/p>\n<p>Par cons\u00e9quent, n<strong>ous recommandons vivement de r\u00e9aliser des observations<\/strong> d\u00e8s que les betteraves atteignent le stade 2-feuilles et de n\u2019intervenir que si le seuil de 2 pucerons verts apt\u00e8res par 10 plantes est atteint.<\/p>\n<ul>\n<li>D\u00e8s le stade 2-feuilles (BBCH 12) avec \u2018Movento\u2019 0,45 l\/ha (2 applications) ou Teppeki 0,14 kg\/ha (1 application)<\/li>\n<li>D\u00e8s le stade \u2018d\u00e9but de fermeture du rang\u2019 (BBCH 31) avec \u2018Gazelle\u2019 0,25 kg\/ha (1 application)<\/li>\n<li>Utiliser suffisamment d\u2019eau (200 litres ou plus) et traiter quand l\u2019humidit\u00e9 relative est suffisante.<\/li>\n<li>Teppeki, Movento et Gazelle peuvent \u00eatre appliqu\u00e9s en m\u00e9lange avec les herbicides betteraves.<\/li>\n<li><strong>Eviter tout traitement avec une pyr\u00e9thrino\u00efde, m\u00eame en m\u00e9lange. Il entraine plus de mal que de bien.<\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Les observations de cette semaine montrent la pr\u00e9sence de pucerons verts dans un tiers des 93 parcelles suivies. 13% ont atteint le seul de traitement depuis la semaine derni\u00e8re. Une parcelle a atteint le seuil pour le deuxi\u00e8me traitement. Dans 47 parcelles, aucun puceron vert n\u2019a \u00e9t\u00e9 observ\u00e9. La carte avec la pression des pucerons [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":26483,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":6,"footnotes":""},"categories":[2,129,222],"tags":[243],"class_list":["post-26488","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-betterave","category-protection-des-plantes","category-ravageurs","tag-messages"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ravageurs\u00a0: \u00e9volution des pucerons verts - 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\/ravageurs-evolution-des-pucerons-verts\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ravageurs\u00a0: \u00e9volution des pucerons verts - IRBAB-KBIVB\" \/>\n<meta property=\"og:description\" content=\"Les observations de cette semaine montrent la pr\u00e9sence de pucerons verts dans un tiers des 93 parcelles suivies. 13% ont atteint le seul de traitement depuis la semaine derni\u00e8re. Une parcelle a atteint le seuil pour le deuxi\u00e8me traitement. Dans 47 parcelles, aucun puceron vert n\u2019a \u00e9t\u00e9 observ\u00e9. 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