Dans la grande famille des acariens, on trouve diff\u00e9rents arthropodes, parmi les plus connus on peut citer les tiques et les acariens, particuli\u00e8rement redout\u00e9s en raison des allergies qu’ils peuvent provoquer.<\/p>\n\n
Dans le domaine de l’agriculture, on parle d’acariens v\u00e9g\u00e9taux qui se nourrissent des plantes et les endommagent. Cependant, il existe des acariens qui peuvent nous aider dans la d\u00e9fense biologique des cultures. Ce sont des organismes utiles qui peuvent \u00eatre utilis\u00e9s contre les pucerons, les haliotides et autres insectes ind\u00e9sirables. Dans cet article nous traitons sp\u00e9cifiquement des acariens qui apportent des dommages aux plantes potag\u00e8res et fruiti\u00e8res, mais il est important de savoir qu’il existe des acariens utiles afin de rechercher des m\u00e9thodes de d\u00e9fense qui les respectent. <\/p>\n\n Les acariens phytophages se nourrissent de la s\u00e8ve des plantes, qu’ils aspirent en les piquant avec leur morsure. Le plus courant est l’araign\u00e9e rouge, qui touche presque toutes les plantes fruiti\u00e8res et l\u00e9gumi\u00e8res. <\/p>\n\n Ces petits arthropodes se reproduisent rapidement, surtout lorsque le temps est doux, ce qui leur permet de prolif\u00e9rer tout en affaiblissant la plante.<\/p>\n\n Les d\u00e9g\u00e2ts qu’ils occasionnent ne se limitent pas \u00e0 la succion de la s\u00e8ve, ils peuvent \u00eatre porteurs de maladies, avec des cons\u00e9quences vraiment graves pour les plantes touch\u00e9es.<\/p>\n\n \u00c9tant tr\u00e8s petits, les acariens sont difficiles \u00e0 d\u00e9tecter, mais on peut remarquer les sympt\u00f4mes de leurs attaques sur les feuilles. Les feuilles touch\u00e9es pr\u00e9sentent g\u00e9n\u00e9ralement un jaunissement ou une d\u00e9coloration ; elles peuvent \u00e9galement se recroqueviller ou se froisser en r\u00e9action aux piq\u00fbres qu’elles subissent. Ce n’est qu’avec beaucoup de pr\u00e9cautions ou une loupe que l’on peut distinguer la pr\u00e9sence de ces organismes dont la taille ne d\u00e9passe pas quelques millim\u00e8tres. <\/p>\n\n Certains acariens, comme l’araign\u00e9e rouge, cr\u00e9ent de minuscules toiles, que l’on peut voir sur la face inf\u00e9rieure de la feuille.<\/p>\n\n Les phytoparasites sont pr\u00e9sents par temps chaud et sec ; en fait, ils sont un parasite typique des jardins d’\u00e9t\u00e9. Une forme de pr\u00e9vention peut \u00eatre d’arroser souvent, voire d’asperger les feuilles d’humidit\u00e9. Faisons toutefois attention, car l’humidit\u00e9 sur les feuilles n’est pas toujours une bonne id\u00e9e, car elle peut favoriser les maladies fongiques. <\/p>\n\n Nous pouvons utiliser des pr\u00e9parations naturelles de bricolage, comme l’ail et l’ortie, comme r\u00e9pulsifs.<\/p>\n\n Les coccinelles sont des pr\u00e9dateurs naturels des acariens, il est int\u00e9ressant d’encourager leur pr\u00e9sence.<\/p>\n\n Si l’on constate des attaques d’acariens, il est important d’intervenir le plus rapidement possible, afin d’\u00e9viter que ces organismes ne prolif\u00e8rent et que leur action n’affaiblisse consid\u00e9rablement les cultures. Lorsque l’attaque est localis\u00e9e, on peut choisir de supprimer les feuilles touch\u00e9es. <\/p>\n\n En agriculture biologique, il existe diff\u00e9rents insecticides capables d’\u00e9liminer les acariens : on peut utiliser du soufre (en faisant attention \u00e0 la possible phytotoxicit\u00e9), ou des produits huileux (savon mou de potassium, huile blanche, huile de soja).<\/p>\n","protected":false},"excerpt":{"rendered":" Les ravageurs des plantes ne sont pas tous des insectes : parmi les organismes qui s’attaquent au potager et au jardin potager, on trouve aussi certaines esp\u00e8ces d’acariens, des arthropodes class\u00e9s parmi les arachnides. Le plus connu est l’araign\u00e9e rouge, que nous rencontrons souvent dans les jardins d’\u00e9t\u00e9. La menace que repr\u00e9sentent cette minuscule invert\u00e9br\u00e9e […]<\/p>\n","protected":false},"author":31,"featured_media":860,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[59,60,62],"tags":[],"class_list":["post-877","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-resolutions-de-problemes","category-maladies-et-parasites-des-plantes","category-parasites-des-plantes"],"acf_fields":{"image":null},"categories_data":[{"term_id":59,"name":"R\u00e9solutions de probl\u00e8mes","slug":"resolutions-de-problemes","term_group":0,"term_taxonomy_id":59,"taxonomy":"category","description":"","parent":0,"count":19,"filter":"raw","term_order":"0","link":"https:\/\/www.seezon.be\/fr\/category\/resolutions-de-problemes\/"},{"term_id":60,"name":"Maladies et parasites des 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<\/figure>\n\nAcariens phytophages et dommages aux plantes :<\/strong><\/strong><\/h2>\n\n
Comment identifier et reconna\u00eetre les acariens ?<\/strong><\/strong><\/h2>\n\n
![\"\"](\"https:\/\/www.seezon.be\/wp-content\/uploads\/sites\/11\/2023\/01\/plantenmijten-2.jpg\")
<\/figure>\n\nComment \u00e9viter les acariens ?<\/strong><\/strong><\/h2>\n\n
Comment se d\u00e9barrasser des acariens ?<\/strong><\/strong><\/h2>\n\n