{"id":19633,"date":"2019-02-12T15:25:43","date_gmt":"2019-02-12T14:25:43","guid":{"rendered":"http:\/\/profert.dz\/fr\/?post_type=avada_portfolio&p=19633"},"modified":"2025-05-26T12:46:26","modified_gmt":"2025-05-26T10:46:26","slug":"les-aleurodes-des-cucurbitacees","status":"publish","type":"avada_portfolio","link":"https:\/\/profert.dz\/fr\/index.php\/portfolio-items\/les-aleurodes-des-cucurbitacees\/","title":{"rendered":"Les aleurodes des cucurbitac\u00e9es"},"content":{"rendered":"

Les aleurodes des cucurbitac\u00e9es<\/h2>\n

Les aleurodes sont aussi appel\u00e9s mouches blanches. Deux esp\u00e8ces s\u2019attaquent aux cucurbitac\u00e9es, l\u2019aleurode des serres (Trialeurode vaporarium<\/em><\/strong>) et l\u2019aleurode du tabac (Bemisia tabaci<\/em><\/strong>). Ces deux esp\u00e8ces sont polyphages et causent des d\u00e9g\u00e2ts consid\u00e9rables. L\u2019esp\u00e8ce la plus fr\u00e9quente sur cucurbitac\u00e9es est l\u2019aleurode du tabac (Bemisia tabaci<\/em><\/strong>).<\/p>\n<\/div>

<\/i><\/i><\/span>Cycle de d\u00e9veloppement <\/span><\/a><\/h4><\/div>
\n

L\u2019aleurode n\u2019a pas une forme de survie (diapause) adapt\u00e9e. Il passe d\u2019une plante \u00e0 une autre, cultiv\u00e9e ou herbac\u00e9e. Ses \u0153ufs sont coriaces, ils r\u00e9sistent aux amplitudes thermiques. Une femelle peut pondre jusqu\u2019\u00e0 300 \u0153ufs durant son cycle de vie. Les \u0153ufs \u00e9closent, donnent des larves qui passent par 4 stades larvaires avant pupaison. Une semaine apr\u00e8s, les adultes de petite taille (environ 1 mm) \u00e9mergent de la pupe. Les adultes poss\u00e8dent deux paires d\u2019ailes recouverts d\u2019une cire poudreuse. Plusieurs g\u00e9n\u00e9rations par an, entre 11 et 15, peuvent se d\u00e9velopper.<\/p>\n<\/div><\/div><\/div>

<\/i><\/i><\/span>Sympt\u00f4mes et d\u00e9g\u00e2ts <\/span><\/a><\/h4><\/div>
\n

Sur feuille\u00a0: <\/strong>les piqures de nutrition provoquent des petites taches, jaune-pale, sur la face inf\u00e9rieure. De fortes attaques provoquent la d\u00e9coloration des feuilles et leur chute pr\u00e9matur\u00e9e affectant consid\u00e9rablement le d\u00e9veloppement de la plante et la br\u00fblure des fruits.<\/p>\n

La mouche blanche secr\u00e8te du miellat qui couvre la surface de la feuille, la fumagine s\u2019y installe et bloque la photosynth\u00e8se.<\/p>\n

La mouche blanche transmet le virus du rabougrissement jaune des cucurbitac\u00e9es (CYSDV) et le virus du jaunissement nervaire du concombre (CVYV). Les virus provoquent le nanisme et l\u2019arr\u00eat de croissance de la plante.<\/p>\n<\/div><\/div><\/div>

<\/i><\/i><\/span>Strat\u00e9gie de lutte <\/span><\/a><\/h4><\/div>
\n

1- Mesures prophylactiques\u00a0:<\/strong><\/p>\n

    \n
  • \n
      \n
    • Eliminer et br\u00fbler les r\u00e9sidus de la culture d\u00e9j\u00e0 infect\u00e9e.<\/li>\n
    • Pratiquer des rotations avec des cultures non h\u00f4tes.<\/li>\n
    • D\u00e9sherber les abords de la parcelle et \u00e9liminer les plantes r\u00e9servoir.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

      2- Lutte chimique (programme pr\u00e9ventif)\u00a0:<\/strong><\/p>\n

      Repiquage\u00a0: <\/strong>\u00e0 ce stade, appliquer Actara<\/strong> \u00e0 la dose de 0.4 kg\/ha<\/strong> en traitement foliaire et 0.6 \u00e0 0.8 kg\/ha<\/strong> au goutte \u00e0 goutte. Ce traitement prot\u00e8gera le plant des attaques des aleurodes et assurera le contr\u00f4le des pucerons et du thrips.<\/p>\n

      D\u00e9veloppement foliaire \u2013 Nouaison\u00a0:<\/strong> \u00e0 ce stade, une bonne protection de la culture est indispensable afin de pr\u00e9server le feuillage des attaques des aleurodes. Ce feuillage est indispensable au bon d\u00e9veloppement et \u00e0 la croissance du fruit. Nous recommandons de traiter avec Voliam Flexi<\/strong>, \u00e0 la dose de 0.3 L\/ha<\/strong>. Ce traitement contr\u00f4le les diff\u00e9rents stades de l\u2019insecte (les stades larvaires et les adultes) et assure une bonne protection contre le puceron, le thrips et les noctuelles.<\/p>\n

      Fin nouaison \u2013 Fin grossissement\u00a0:<\/strong> \u00e0 ce stade, nous recommandons l\u2019utilisation d\u2019Engeo<\/strong>, \u00e0 la dose de 0.2 L\/ha<\/strong>, pendant tout le cycle, pour contr\u00f4ler les adultes et les stades larvaires. L\u2019utilisation d\u2019Engeo<\/strong> permet de contr\u00f4ler les noctuelles, les pucerons et les thrips.<\/div><\/div><\/div><\/div><\/div>

      <\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":19689,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"portfolio_category":[],"portfolio_skills":[],"portfolio_tags":[],"class_list":["post-19633","avada_portfolio","type-avada_portfolio","status-publish","format-standard","has-post-thumbnail","hentry"],"yoast_head":"\nLes aleurodes des cucurbitac\u00e9es - Profert<\/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:\/\/profert.dz\/fr\/index.php\/portfolio-items\/les-aleurodes-des-cucurbitacees\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les aleurodes des cucurbitac\u00e9es - Profert\" \/>\n<meta property=\"og:url\" content=\"https:\/\/profert.dz\/fr\/index.php\/portfolio-items\/les-aleurodes-des-cucurbitacees\/\" \/>\n<meta property=\"og:site_name\" content=\"Profert\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-26T10:46:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/profert.dz\/fr\/wp-content\/uploads\/2019\/02\/Profert-Mouche-blanche-des-cucurbit-00.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/profert.dz\/fr\/index.php\/portfolio-items\/les-aleurodes-des-cucurbitacees\/\",\"url\":\"https:\/\/profert.dz\/fr\/index.php\/portfolio-items\/les-aleurodes-des-cucurbitacees\/\",\"name\":\"Les aleurodes des cucurbitac\u00e9es - 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