{"id":1,"date":"2013-11-06T16:56:00","date_gmt":"2013-11-06T15:56:00","guid":{"rendered":"http:\/\/normandiemaine.cerfrance.fr\/arad2\/?p=1"},"modified":"2023-03-07T09:24:15","modified_gmt":"2023-03-07T08:24:15","slug":"stagnation-rendements-cultures","status":"publish","type":"post","link":"https:\/\/normandiemaine.cerfrance.fr\/arad2\/stagnation-rendements-cultures\/","title":{"rendered":"Stagnation des rendements"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">La stagnation des rendements est-elle une fatalite\u0301 ?<\/h1>\n\n\n<p>Pour r\u00e9pondre aux questions sur la stagnation des rendements, le <strong>club de r\u00e9flexion ESPERA<\/strong> (Etude de la stagnation des performances et des rendements agronomiques) a \u00e9t\u00e9 mis en place en novembre 2012. Il est n\u00e9 de l\u2019observation depuis les 20 derni\u00e8res ann\u00e9es, d\u2019un <strong>ralentissement de l\u2019am\u00e9lioration des rendements de certaines esp\u00e8ces<\/strong> (bl\u00e9 d\u2019hiver, orge d\u2019hiver, colza). Alors que d\u2019autres esp\u00e8ces semblent peu ou pas affect\u00e9es (ma\u00efs, betterave sucri\u00e8re).<\/p>\n<p>Les premi\u00e8res analyses mettent en \u00e9vidence <strong>plusieurs facteurs : <\/strong><\/p>\n<ul>\n<li><strong>le climat, <\/strong><\/li>\n<li><strong>la g\u00e9n\u00e9tique, <\/strong><\/li>\n<li><strong>les pratiques agricoles, <\/strong><\/li>\n<li><strong>les politiques agricoles&#8230;<\/strong><\/li>\n<\/ul>\n<p>Le <a href=\"https:\/\/www.gis-relance-agronomique.fr\/\" target=\"_blank\" rel=\"noopener\">GIS Relance Agronomique<\/a> a organis\u00e9 le 7 octobre 2013 un s\u00e9minaire de r\u00e9flexion sur le sujet dont voici <strong>quelques points cl\u00e9<\/strong>.<\/p>\n\n<div class=\"_3d-flip-book  fb3d-fullscreen-mode full-size\" data-id=\"591\" data-mode=\"fullscreen\" data-title=\"false\" data-template=\"short-white-book-view\" data-lightbox=\"dark-shadow\" data-urlparam=\"fb3d-page\" data-page-n=\"0\" data-pdf=\"\" data-tax=\"null\" 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&& FB3D_CLIENT_LOCALE.render && FB3D_CLIENT_LOCALE.render();<\/script>\n\n\n\n<p>Retrouvez toutes nos publications l&rsquo;<a href=\"https:\/\/normandiemaine.cerfrance.fr\/arad2\/category\/changement-climatique\/evaluer-et-attenuer-les-impacts-sur-lagriculture\/\" target=\"_blank\" rel=\"noreferrer noopener\">att\u00e9nuation des effets du changement climatique en agriculture<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>On observe depuis 20 ans, une stagnation de l\u2019am\u00e9lioration des rendements de certaines esp\u00e8ces<\/p>\n","protected":false},"author":4,"featured_media":1556,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","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-4)","background-image":"","background-repeat":"repeat","background-position":"center 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