{"id":3351,"date":"2025-06-25T13:04:34","date_gmt":"2025-06-25T13:04:34","guid":{"rendered":"https:\/\/leguminnov36.fr\/?p=3351"},"modified":"2025-10-08T14:18:32","modified_gmt":"2025-10-08T14:18:32","slug":"trefle-blanc","status":"publish","type":"post","link":"https:\/\/leguminnov36.fr\/fr\/trefle-blanc\/","title":{"rendered":"Tr\u00e8fle blanc : un pilier des prairies durables"},"content":{"rendered":"
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Le tr\u00e8fle blanc<\/h3><\/div>

Un pilier des prairies durables.<\/p><\/div><\/div>\n\n\n\n

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Le tr\u00e8fle blanc : un pilier des prairies durables<\/h2>\n<\/div>\n\n\n\n
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Le tr\u00e8fle blanc s\u2019impose comme une plante incontournable dans la conduite des prairies. Capable de pousser sur la plupart des sols, \u00e0 l\u2019exception de ceux trop humides ou tr\u00e8s acides, il s\u00e9duit par sa r\u00e9silience et sa polyvalence. R\u00e9sistant au gel et au pi\u00e9tinement, dot\u00e9 d\u2019un r\u00e9seau de stolons et de racines superficielles qui lui permettent de concurrencer efficacement les adventices, il reste toutefois sensible aux s\u00e9cheresses en raison de son faible enracinement. Bien conduit, il peut durer entre 4 et 5 ans.

Sa force r\u00e9side aussi dans les associations. Pour r\u00e9v\u00e9ler son potentiel, le tr\u00e8fle blanc doit \u00eatre sem\u00e9 avec des gramin\u00e9es dont la p\u00e9rennit\u00e9 correspond \u00e0 la sienne, comme le ray-grass anglais, le dactyle ou la f\u00e9tuque \u00e9lev\u00e9e. Le choix d\u00e9pendra avant tout des caract\u00e9ristiques du sol. Son d\u00e9marrage v\u00e9g\u00e9tatif tardif influence ensuite la r\u00e9partition entre esp\u00e8ces dans le couvert.

Sur le plan alimentaire, le tr\u00e8fle blanc est un v\u00e9ritable atout. Riche en prot\u00e9ines, en min\u00e9raux et en oligo-\u00e9l\u00e9ments, il se montre particuli\u00e8rement app\u00e9tent et digestible. Il est exploit\u00e9 principalement en p\u00e2turage, mais aussi en foin ou en enrubannage. Toutefois, la vigilance s\u2019impose face au risque de m\u00e9t\u00e9orisation : sa proportion ne doit pas d\u00e9passer 50 % de la prairie. En pratique, on vise une pr\u00e9sence de 20 \u00e0 25 % au printemps et de 40 \u00e0 50 % en \u00e9t\u00e9. En conditions favorables, il assure une production estivale \u00e9lev\u00e9e, \u00e0 condition que l\u2019eau ne vienne pas \u00e0 manquer.

Le choix vari\u00e9tal joue \u00e9galement un r\u00f4le cl\u00e9. Le tr\u00e8fle blanc nain, \u00e0 petites feuilles et \u00e0 ancrages multiples, convient parfaitement au p\u00e2turage. Le g\u00e9ant, dot\u00e9 de grandes folioles et de tiges vigoureuses, se montre plus concurrent des gramin\u00e9es et s\u2019adapte mieux \u00e0 la fauche. Entre les deux, l\u2019interm\u00e9diaire offre une solution polyvalente utilisable aussi bien en p\u00e2ture qu\u2019en fauche.

Enfin, la fertilisation conditionne la r\u00e9ussite. Le tr\u00e8fle blanc a besoin de phosphore et de potasse adapt\u00e9s \u00e0 ses exigences, mais peu d\u2019azote. Avant le semis, une analyse de sol permet de v\u00e9rifier les r\u00e9serves en P et K. Ensuite, les apports annuels d\u00e9pendent du mode d\u2019exploitation : 60 kg\/ha de P2O5 et 120 kg\/ha de K2O pour le p\u00e2turage ; 80 kg\/ha de P2O5 et 200 kg\/ha de K2O pour la fauche. Les apports doivent \u00eatre fractionn\u00e9s pour gagner en efficacit\u00e9 et peuvent provenir d\u2019engrais min\u00e9raux, de fumier ou encore de lisier, appliqu\u00e9 par exemple en fin d\u2019hiver sur un m\u00e9lange ray-grass \/ tr\u00e8fle blanc.

En revanche, les apports azot\u00e9s au semis sont d\u00e9conseill\u00e9s, car ils risqueraient de freiner l\u2019installation du tr\u00e8fle. Pour maintenir un \u00e9quilibre de 30 \u00e0 50 % de tr\u00e8fle blanc dans la prairie, un apport de 50 unit\u00e9s peut toutefois \u00eatre envisag\u00e9 en fin d\u2019hiver ou au d\u00e9but du printemps, lorsque la gramin\u00e9e red\u00e9marre avant le tr\u00e8fle.
Dans certaines situations, notamment avec des gramin\u00e9es tardives, cet apport peut m\u00eame \u00eatre \u00e9vit\u00e9.<\/p>\n\n\n\n

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Plus de d\u00e9tails ici<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

Le tr\u00e8fle blanc : un pilier des prairies durables Le tr\u00e8fle blanc s\u2019impose comme une plante incontournable dans la conduite des prairies. Capable de pousser sur la plupart des sols, \u00e0 l\u2019exception de ceux trop humides ou tr\u00e8s acides, il s\u00e9duit par sa r\u00e9silience et sa polyvalence. R\u00e9sistant au gel et au pi\u00e9tinement, dot\u00e9 d\u2019un<\/p>","protected":false},"author":1,"featured_media":3590,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_crdt_document":"","_uag_custom_page_level_css":"","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","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":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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tr\u00e8fle blanc : un pilier des prairies durables Le tr\u00e8fle blanc s\u2019impose comme une plante incontournable dans la conduite des prairies. Capable de pousser sur la plupart des sols, \u00e0 l\u2019exception de ceux trop humides ou tr\u00e8s acides, il s\u00e9duit par sa r\u00e9silience et sa polyvalence. R\u00e9sistant au gel et au pi\u00e9tinement, dot\u00e9 d\u2019un","_links":{"self":[{"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/posts\/3351","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/comments?post=3351"}],"version-history":[{"count":7,"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/posts\/3351\/revisions"}],"predecessor-version":[{"id":3617,"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/posts\/3351\/revisions\/3617"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/media\/3590"}],"wp:attachment":[{"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/media?parent=3351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/categories?post=3351"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/leguminnov36.fr\/fr\/wp-json\/wp\/v2\/tags?post=3351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}