{"id":33265,"date":"2026-08-14T14:46:24","date_gmt":"2026-08-14T14:46:24","guid":{"rendered":"https:\/\/iita.org\/?post_type=news-item&#038;p=33265"},"modified":"2026-08-14T14:46:53","modified_gmt":"2026-08-14T14:46:53","slug":"collaborative-effort-saves-ukerewes-bananas-from-bbtv-threat","status":"publish","type":"news-item","link":"https:\/\/iita.org\/fr\/news-item\/collaborative-effort-saves-ukerewes-bananas-from-bbtv-threat\/","title":{"rendered":"Un effort collectif sauve les bananiers d'Ukerewe de la menace du BBTV"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"820\" height=\"411\" src=\"https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-1.png\" alt=\"Lost Hope: A smallholder farmer's banana garden severely devastated by Banana Bunchy Top Disease (BBTD), resulting in the loss of most plants. \" class=\"wp-image-33273\" srcset=\"https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-1.png 820w, https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-1-300x150.png 300w, https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-1-768x385.png 768w, https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-1-18x9.png 18w\" sizes=\"(max-width: 820px) 100vw, 820px\" \/><figcaption class=\"wp-element-caption\">Espoir perdu : Le jardin de bananiers d'un petit exploitant agricole, gravement d\u00e9vast\u00e9 par le virus du sommet en touffe du bananier (BBTD), entra\u00eenant la perte de la plupart des plants. <\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Les producteurs de bananes de l\u2019\u00eele d\u2019Ukerewe, en Tanzanie, ont \u00e9t\u00e9 confront\u00e9s \u00e0 une catastrophe lorsque le virus du \u00ab bunchy top \u00bb de la bananier (BBTV) s\u2019est propag\u00e9, d\u00e9truisant plus de 90% de leurs cultures et mena\u00e7ant la principale source de nourriture et de revenus de l\u2019\u00eele. Pour cette communaut\u00e9 isol\u00e9e, les bananes constituent un aliment de base et un moyen de subsistance essentiel. Alors que leurs moyens de subsistance \u00e9taient menac\u00e9s, un partenariat entre scientifiques, dirigeants locaux et agriculteurs a vu le jour pour redonner espoir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le BBTV, responsable de la maladie du sommet touffu du bananier (BBTD), se propage par le biais de mat\u00e9riel de plantation infect\u00e9 et de pucerons vecteurs. Le BBTV a \u00e9t\u00e9 officiellement signal\u00e9 pour la premi\u00e8re fois en Tanzanie en 2020, et d'ici 2023, le virus s'\u00e9tait propag\u00e9 \u00e0 12 r\u00e9gions, le district d'Ukerewe \u00e9tant l'un des plus touch\u00e9s. La plupart des agriculteurs ignoraient l'existence de cette maladie et ont utilis\u00e9 sans le savoir des rejets infect\u00e9s, alimentant ainsi l'\u00e9pid\u00e9mie. Alors que les taux d'infection montaient en fl\u00e8che, les r\u00e9coltes ont chut\u00e9, laissant de nombreux <a>m\u00e9nages<\/a>&nbsp;en situation d'ins\u00e9curit\u00e9 alimentaire.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En r\u00e9ponse, <a href=\"https:\/\/iita.org\/fr\/\"><u>IITA<\/u><\/a>\u2013<a href=\"https:\/\/www.cgiar.org\/\"><u>CGIAR<\/u><\/a>, l'Autorit\u00e9 phytosanitaire et des pesticides de Tanzanie (TPHPA) et <a href=\"https:\/\/www.tari.go.tz\/\"><u>Institut Tanzanien de Recherche Agricole (TARI)<\/u><\/a>&nbsp;a collabor\u00e9 avec les autorit\u00e9s locales. Leur premi\u00e8re d\u00e9marche a \u00e9t\u00e9 d'\u00e9liminer les plants infect\u00e9s et de donner aux agriculteurs acc\u00e8s \u00e0 de jeunes plantules de bananier saines et exemptes de virus. En novembre 2024, une unit\u00e9 de macropropagation a \u00e9t\u00e9 cr\u00e9\u00e9e, avec une capacit\u00e9 de production de 6 000 mat\u00e9riels de plantation de bananiers indemnes de maladies. L'installation a produit jusqu'\u00e0 pr\u00e9sent 2 950 plantules saines r\u00e9parties en cinq vari\u00e9t\u00e9s de bananiers : <em>Inshakara<\/em>, <em>Nyoya<\/em>, TARIBAN 2, TARIBAN 4 et FHIA 17. Des vitroplants ont \u00e9t\u00e9 distribu\u00e9s aux agriculteurs, chaque b\u00e9n\u00e9ficiaire recevant entre 10 et 100 plants selon la taille de son exploitation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En quelques mois, des r\u00e9sultats positifs commencent \u00e0 \u00eatre visibles. Les champs replant\u00e9s avec de jeunes plants sains ont commenc\u00e9 \u00e0 se r\u00e9tablir, et de beaux bananiers font leur retour dans le paysage. Bien que quelques nouvelles infections se soient produites, principalement dues aux pucerons, la plupart des exploitations sont rest\u00e9es indemnes de maladies gr\u00e2ce \u00e0 une meilleure hygi\u00e8ne des champs et \u00e0 une formation r\u00e9guli\u00e8re des agriculteurs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201c Nous constatons de r\u00e9els avantages \u00e0 utiliser des plantules de bananier exemptes de maladies \u201d, a d\u00e9clar\u00e9 le Dr George Mahuku, phytopathologiste \u00e0 l'IITA. \u201c Travailler ensemble et utiliser du mat\u00e9riel v\u00e9g\u00e9tal sain, c'est ce qui fait toute la diff\u00e9rence. \u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"820\" height=\"411\" src=\"https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-2.png\" alt=\"Restored Hope: A smallholder farmer in Ukerewe successfully restored their banana garden using certified disease-free planting material produced through the locally established macro-propagation unit.\" class=\"wp-image-33274\" srcset=\"https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-2.png 820w, https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-2-300x150.png 300w, https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-2-768x385.png 768w, https:\/\/iita.org\/wp-content\/uploads\/2026\/08\/Collaborative-Pic-2-18x9.png 18w\" sizes=\"(max-width: 820px) 100vw, 820px\" \/><figcaption class=\"wp-element-caption\">Espoir restitu\u00e9 : Un petit agriculteur d'Ukerewe a r\u00e9ussi \u00e0 restaurer sa bananeraie en utilisant du mat\u00e9riel v\u00e9g\u00e9tal certifi\u00e9 exempt de maladies produit par l'unit\u00e9 de macro-propagation \u00e9tablie localement.<br><br><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Des agriculteurs comme Sospeter Mgaya ont exprim\u00e9 un nouvel espoir, constatant des r\u00e9gimes plus gros et des cultures plus saines qu'il ne l'aurait cru possible apr\u00e8s l'\u00e9pid\u00e9mie. M. Mgaya a \u00e9galement appel\u00e9 les autorit\u00e9s locales \u00e0 promulguer des r\u00e8glements int\u00e9rieurs soutenant l'arrachage des plantes infect\u00e9es et \u00e0 allouer des ressources pour les herbicides, afin de garantir la p\u00e9rennit\u00e9 de ces acquis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La strat\u00e9gie de lutte se concentre sur l'\u00e9radication des touffes infect\u00e9es (ensembles de rejetons d'un bananier) <a>de la plante<\/a>&nbsp;) en les d\u00e9racinant ou en injectant de l'herbicide, puis en replantant avec du mat\u00e9riel indemne de virus. Cette approche, associ\u00e9e \u00e0 une formation continue des agriculteurs, a \u00e9t\u00e9 essentielle pour la reprise. La campagne de sensibilisation, men\u00e9e par l'IITA et ses partenaires, a \u00e9galement soulign\u00e9 l'importance d'\u00e9liminer les plantes infect\u00e9es et de d\u00e9truire les repousses spontan\u00e9es qui peuvent h\u00e9berger le virus.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201c La propagation du BBTD \u00e0 Ukerewe est un cas classique d'expansion d'une maladie par le d\u00e9placement de mat\u00e9riel v\u00e9g\u00e9tal infect\u00e9. Sensibiliser les agriculteurs au BBTD est une premi\u00e8re \u00e9tape essentielle pour g\u00e9rer la maladie et r\u00e9tablir la production de bananes \u201d, a d\u00e9clar\u00e9 le Dr Lava Kumar, virologue \u00e0 l'IITA.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Malgr\u00e9 les progr\u00e8s, des d\u00e9fis persistants demeurent : le risque continu de r\u00e9introduction de rejets infect\u00e9s provenant des zones voisines, un approvisionnement limit\u00e9 en mat\u00e9riel de plantation sain et l'application incoh\u00e9rente des pratiques de gestion recommand\u00e9es. Hamady Lyimo, de la TPHPA, a soulign\u00e9 la n\u00e9cessit\u00e9 d'une action coordonn\u00e9e \u00e0 grande \u00e9chelle. \u201c Une adoption durable et g\u00e9n\u00e9ralis\u00e9e au sein de la communaut\u00e9 est essentielle pour r\u00e9ussir l'\u00e9radication de la maladie \u201d, a-t-il d\u00e9clar\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le directeur ex\u00e9cutif du district, Vincent Augustine Mbua, a r\u00e9affirm\u00e9 l'engagement du gouvernement local et des parties prenantes \u00e0 reconstruire un secteur bananier r\u00e9silient. La mission met l'accent sur le maintien de la dynamique en renfor\u00e7ant la surveillance des maladies, en \u00e9largissant la distribution de semences saines et en poursuivant l'\u00e9ducation des agriculteurs. L'exp\u00e9rience d'Ukerewe d\u00e9montre qu'avec de la collaboration et de la d\u00e9termination, m\u00eame les maladies v\u00e9g\u00e9tales les plus d\u00e9vastatrices peuvent \u00eatre surmont\u00e9es.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Banana farmers on Ukerewe Island, Tanzania, faced disaster when banana bunchy top virus (BBTV) swept through, wiping out over 90% [&hellip;]<\/p>\n","protected":false},"featured_media":33274,"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":"","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-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"tags":[2931,2981,2982,2983,2980,2903,2907],"science-area":[4],"program":[158,109],"location":[27],"news-type":[51],"hub":[62],"crop":[65],"impact-areas":[72],"item-year":[204],"class_list":["post-33265","news-item","type-news-item","status-publish","has-post-thumbnail","hentry","tag-banana","tag-bbtv","tag-diseases","tag-macro-propagation","tag-pests","tag-plant-health","tag-seed-systems","science-area-resilient-agri-food-systems","program-nutrition-and-healthnh","program-plant-health","location-tanzania","news-type-news","hub-eastern-africa","crop-banana","impact-areas-nutrition-health-and-food-security","item-year-204"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - 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