{"id":2107,"date":"2017-02-07T16:41:23","date_gmt":"2017-02-07T15:41:23","guid":{"rendered":"http:\/\/geowww.agrocampus-ouest.fr\/web\/?p=2107"},"modified":"2024-06-05T16:09:03","modified_gmt":"2024-06-05T14:09:03","slug":"web-reseau-mh-vers-une-meilleure-connaissance-de-la-mineralisation-de-lazote-du-sol","status":"publish","type":"post","link":"https:\/\/geosas.fr\/web\/?p=2107","title":{"rendered":"Web Reseau Mh\u00a0: vers une meilleure connaissance de la min\u00e9ralisation de l\u2019azote du sol"},"content":{"rendered":"<p>Le portail cartographique du <a href=\"https:\/\/geosas.fr\/portails\/?portail=mh\"><span style=\"color: #0000ff;\">Web Reseau Mh<\/span><\/a> permet la diffusion des r\u00e9sultats du projet Mh, un projet de Recherche et D\u00e9veloppement dont les objectifs \u00e9taient :<\/p>\n<ul>\n<li>d\u2019obtenir un r\u00e9f\u00e9rentiel sur la min\u00e9ralisation de l\u2019azote des mati\u00e8res organiques humifi\u00e9es du sol (MOS) en Bretagne ;<\/li>\n<li>de hi\u00e9rarchiser les d\u00e9terminants (climat, sol, pratiques culturales) de la min\u00e9ralisation de l\u2019azote des MOS ;<\/li>\n<li>d\u2019am\u00e9liorer la pr\u00e9vision de la min\u00e9ralisation de l\u2019azote des MOS.<\/li>\n<\/ul>\n<p>Pour cela, un r\u00e9seau constitu\u00e9 de 141 parcelles r\u00e9parties sur l\u2019ensemble de la Bretagne, et a \u00e9t\u00e9 suivi pendant 5 ans, de 2010 \u00e0 fin 2014. La min\u00e9ralisation a \u00e9t\u00e9 quantifi\u00e9e par la mesure des composantes du bilan azot\u00e9 d\u2019une culture de ma\u00efs non fertilis\u00e9e (rendement et N absorb\u00e9 par la culture, quantit\u00e9s de N min\u00e9ral du sol au printemps et \u00e0 l\u2019automne, lixiviation estim\u00e9e par approche mod\u00e8le (STICS)). Une importante base de donn\u00e9es sur les sols a \u00e9t\u00e9 constitu\u00e9e pour expliquer la variabilit\u00e9 de la min\u00e9ralisation, avec des mesures physiques, chimiques et biologiques. Un document de synth\u00e8se diffus\u00e9 lors d\u2019une journ\u00e9e de restitution en f\u00e9vrier 2016 est disponible<\/p>\n<p style=\"text-align: center;\"><strong><a href=\"https:\/\/geosas.fr\/web\/wp-content\/uploads\/2017\/02\/Actes-de-la-journee-Reseau-Mh-VF.pdf\" target=\"_blank\" rel=\"noopener\"> ICI<\/a><\/strong><\/p>\n<p>Ce projet de recherche-d\u00e9veloppement s\u2019inscrit dans le cadre de la reconqu\u00eate de la qualit\u00e9 de l\u2019eau en Bretagne, et il a \u00e9t\u00e9 financ\u00e9 par : l\u2019Agence de l\u2019Eau Loire Bretagne (AELB), le Conseil R\u00e9gional de Bretagne, les Conseils G\u00e9n\u00e9raux du Finist\u00e8re, des C\u00f4tes d\u2019Armor et du Morbihan et la DRAAF. La coordination du programme est assur\u00e9e par l\u2019AELB, sa ma\u00eetrise d\u2019\u0153uvre par la Chambre R\u00e9gionale d\u2019Agriculture de Bretagne (CRAB), et sa conduite scientifique par l\u2019INRA UMR SAS.<\/p>\n<p style=\"text-align: right;\">Laure Beff<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le portail cartographique du Web Reseau Mh permet la diffusion des r\u00e9sultats du projet Mh, un projet de Recherche et D\u00e9veloppement dont les objectifs \u00e9taient &hellip; <\/p>\n","protected":false},"author":3,"featured_media":2062,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,9],"tags":[],"class_list":["post-2107","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-donnees","category-toutes-les-actualites"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Web Reseau Mh\u00a0: vers une meilleure connaissance de la min\u00e9ralisation de l\u2019azote du sol - G\u00e9oSAS<\/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:\/\/geosas.fr\/web\/?p=2107\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Web Reseau Mh\u00a0: vers une meilleure connaissance de la min\u00e9ralisation de l\u2019azote du sol - G\u00e9oSAS\" \/>\n<meta property=\"og:description\" content=\"Le portail cartographique du Web Reseau Mh permet la diffusion des r\u00e9sultats du projet Mh, un projet de Recherche et D\u00e9veloppement dont les objectifs \u00e9taient &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/geosas.fr\/web\/?p=2107\" \/>\n<meta property=\"og:site_name\" content=\"G\u00e9oSAS\" \/>\n<meta property=\"article:published_time\" content=\"2017-02-07T15:41:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-05T14:09:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/geosas.fr\/web\/wp-content\/uploads\/2016\/04\/Portail_Biom_Mh.png\" \/>\n\t<meta property=\"og:image:width\" content=\"220\" \/>\n\t<meta property=\"og:image:height\" content=\"118\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"lbeff\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"lbeff\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/geosas.fr\/web\/?p=2107#article\",\"isPartOf\":{\"@id\":\"https:\/\/geosas.fr\/web\/?p=2107\"},\"author\":{\"name\":\"lbeff\",\"@id\":\"https:\/\/geosas.fr\/web\/#\/schema\/person\/230f8b490fcb39f69de4404f1144c61a\"},\"headline\":\"Web Reseau Mh\u00a0: vers une meilleure connaissance de la min\u00e9ralisation de l\u2019azote du sol\",\"datePublished\":\"2017-02-07T15:41:23+00:00\",\"dateModified\":\"2024-06-05T14:09:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/geosas.fr\/web\/?p=2107\"},\"wordCount\":321,\"publisher\":{\"@id\":\"https:\/\/geosas.fr\/web\/#organization\"},\"image\":{\"@id\":\"https:\/\/geosas.fr\/web\/?p=2107#primaryimage\"},\"thumbnailUrl\":\"https:\/\/geosas.fr\/web\/wp-content\/uploads\/2016\/04\/Portail_Biom_Mh.png\",\"articleSection\":[\"Donn\u00e9es\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/geosas.fr\/web\/?p=2107\",\"url\":\"https:\/\/geosas.fr\/web\/?p=2107\",\"name\":\"Web Reseau Mh\u00a0: vers une meilleure connaissance de la min\u00e9ralisation de l\u2019azote du sol - 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