{"id":2274,"date":"2022-12-07T11:22:48","date_gmt":"2022-12-07T10:22:48","guid":{"rendered":"https:\/\/normandiemaine.cerfrance.fr\/arad2\/?p=2274"},"modified":"2023-03-07T09:23:43","modified_gmt":"2023-03-07T08:23:43","slug":"perspectives-developpement-du-soja","status":"publish","type":"post","link":"https:\/\/normandiemaine.cerfrance.fr\/arad2\/perspectives-developpement-du-soja\/","title":{"rendered":"Perspectives de d\u00e9veloppement du soja"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Perspectives de d\u00e9veloppement du soja dans le bassin du Grand Ouest<\/h1>\n\n\n\n<p>L&rsquo;ARAD2 vous pr\u00e9sente dans cette publication <strong>quelles sont les perspectives de d\u00e9veloppement du soja dans le bassin du Grand-Ouest de la France<\/strong>. <\/p>\n\n\n\n<p>Le Nord-Ouest de la France est marqu\u00e9 par une forte proportion d\u2019exploitations agricoles poss\u00e9dant au moins un atelier d\u2019\u00e9levage. Le mod\u00e8le Prospective Aliment, d\u00e9velopp\u00e9 par le C\u00e9r\u00e9opa, permet d\u2019estimer les besoins pour les r\u00e9gions Normandie, Pays de la Loire et Centre-Val de Loire avec au moins 120 000 tonnes de tourteaux de soja non OGM soit environ 160 000 t de graines. Aujourd\u2019hui, <strong>le soja utilis\u00e9 dans les \u00e9levages provient principalement de l\u2019export ou du Sud-Ouest de la France pour le soja fran\u00e7ais<\/strong>. La demande est donc tr\u00e8s \u00e9lev\u00e9e dans ces r\u00e9gions. De plus, produire du soja local pourrait permettre d\u2019augmenter l\u2019autonomie prot\u00e9ique dans les \u00e9levages.<\/p>\n\n\n\n<p>N\u00e9anmoins,<strong> aujourd\u2019hui le Nord-Ouest de la France reste un bassin o\u00f9 les surfaces de soja peinent \u00e0 se d\u00e9velopper.<\/strong> Pour appuyer ce d\u00e9veloppement, dans le cadre du <a href=\"https:\/\/www.terresinovia.fr\/cap-proteines\" target=\"_blank\" rel=\"noreferrer noopener\">projet Cap Prot\u00e9ines pilot\u00e9 par Terres Inovia<\/a>, un observatoire de parcelles a \u00e9t\u00e9 mis en place et des sc\u00e9narios technico-\u00e9conomiques d\u2019insertion du soja dans les assolements ont \u00e9t\u00e9 \u00e9tudi\u00e9s. Les<br>donn\u00e9es obtenues montrent qu\u2019au niveau de rendement atteint en 2021,<strong> l\u2019insertion de soja dans les assolements n\u2019est aujourd\u2019hui pas rentable \u00e9conomiquement, malgr\u00e9 les<br>autres atouts sociaux et environnementaux<\/strong>. Il faudrait alors :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>soit fortement gagner en rendement (35 q\/ha versus 22 q\/ha obtenu),<\/li><li>soit que le prix pay\u00e9 aux producteurs passe de 650 \u20ac\/t \u00e0 plus de 950 \u20ac\/t.<\/li><\/ul>\n\n\n<div class=\"_3d-flip-book  fb3d-fullscreen-mode full-size\" data-id=\"2272\" 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\" data-thumbnail=\"\" data-cols=\"3\" data-book-template=\"default\" data-trigger=\"\"><\/div><script type=\"text\/javascript\">window.FB3D_CLIENT_DATA = window.FB3D_CLIENT_DATA || [];FB3D_CLIENT_DATA.push('eyJwb3N0cyI6eyIyMjcyIjp7IklEIjoyMjcyLCJ0aXRsZSI6IlF1ZWxsZXMgcGVyc3BlY3RpdmVzIGRlIGRldmVsb3BwZW1lbnQgZHUgc29qYSBkYW5zIEdyYW5kLU91ZXN0IiwidHlwZSI6InBkZiIsInJlYWR5X2Z1bmN0aW9uIjoiIiwiYm9va19zdHlsZSI6ImZsYXQiLCJib29rX3RlbXBsYXRlIjoibm9uZSIsIm91dGxpbmUiOltdLCJkYXRhIjp7InBvc3RfSUQiOiIyMjczIiwiZ3VpZCI6Imh0dHBzOlwvXC9ub3JtYW5kaWVtYWluZS5jZXJmcmFuY2UuZnJcL2FyYWQyXC93cC1jb250ZW50XC91cGxvYWRzXC9zaXRlc1wvM1wvMjAyMlwvMTJcL1F1ZWxsZXMtcGVyc3BlY3RpdmVzLWRlLWRldmVsb3BwZW1lbnQtZHUtc29qYS1kYW5zLUdyYW5kLU91ZXN0LUFSQURcdTAwYjIucGRmIiwicGRmX3BhZ2VzIjoiNCIsInBhZ2VzX2N1c3RvbWl6YXRpb24iOiJub25lIn0sInRodW1ibmFpbCI6eyJkYXRhIjp7InBvc3RfSUQiOiIwIn0sInR5cGUiOiJhdXRvIn0sInByb3BzIjp7ImNhY2hlZFBhZ2VzIjoiYXV0byIsInJlbmRlckluYWN0aXZlUGFnZXMiOiJhdXRvIiwicmVuZGVySW5hY3RpdmVQYWdlc09uTW9iaWxlIjoiYXV0byIsInJlbmRlcldoaWxlRmxpcHBpbmciOiJhdXRvIiwicHJlbG9hZFBhZ2VzIjoiYXV0byIsInJ0bCI6ImF1dG8iLCJpbnRlcmFjdGl2ZUNvcm5lcnMiOiJhdXRvIiwic2hlZXQiOnsic3RhcnRWZWxvY2l0eSI6ImF1dG8iLCJ3YXZlIjoiYXV0byIsInNoYXBlIjoiYXV0byIsIndpZHRoVGV4ZWxzIjoiYXV0byIsImNvbG9yIjoiYXV0byIsInNpZGUiOiJhdXRvIiwiY29ybmVyRGV2aWF0aW9uIjoiYXV0byIsImZsZXhpYmlsaXR5IjoiYXV0byIsImZsZXhpYmxlQ29ybmVyIjoiYXV0byIsImJlbmRpbmciOiJhdXRvIiwiaGVpZ2h0VGV4ZWxzIjoiYXV0byJ9LCJjb3ZlciI6eyJ3YXZlIjoiYXV0byIsImNvbG9yIjoiYXV0byIsImJpbmRlclRleHR1cmUiOiJhdXRvIiwiZGVwdGgiOiJhdXRvIiwicGFkZGluZyI6ImF1dG8iLCJzdGFydFZlbG9jaXR5IjoiYXV0byIsImZsZXhpYmlsaXR5IjoiYXV0byIsImZsZXhpYmxlQ29ybmVyIjoiYXV0byIsImJlbmRpbmciOiJhdXRvIiwid2lkdGhUZXhlbHMiOiJhdXRvIiwiaGVpZ2h0VGV4ZWxzIjoiYXV0byIsIm1hc3MiOiJhdXRvIiwic2lkZSI6ImF1dG8iLCJzaGFwZSI6ImF1dG8ifSwicGFnZSI6eyJ3YXZlIjoiYXV0byIsImNvbG9yIjoiYXV0byIsImRlcHRoIjoiYXV0byIsInN0YXJ0VmVsb2NpdHkiOiJhdXRvIiwiZmxleGliaWxpdHkiOiJhdXRvIiwiZmxleGlibGVDb3JuZXIiOiJhdXRvIiwiYmVuZGluZyI6ImF1dG8iLCJ3aWR0aFRleGVscyI6ImF1dG8iLCJoZWlnaHRUZXhlbHMiOiJhdXRvIiwibWFzcyI6ImF1dG8iLCJzaWRlIjoiYXV0byIsInNoYXBlIjoiYXV0byJ9LCJoZWlnaHQiOiJhdXRvIiwid2lkdGgiOiJhdXRvIiwiZ3Jhdml0eSI6ImF1dG8iLCJwYWdlc0ZvclByZWRpY3RpbmciOiJhdXRvIn0sImNvbnRyb2xQcm9wcyI6eyJhY3Rpb25zIjp7ImNtZFNhdmUiOnsiZW5hYmxlZCI6ImF1dG8iLCJlbmFibGVkSW5OYXJyb3ciOiJhdXRvIn0sImNtZFByaW50Ijp7ImVuYWJsZWQiOiJhdXRvIiwiZW5hYmxlZEluTmFycm93IjoiYXV0byJ9LCJjbWRTaW5nbGVQYWdlIjp7ImVuYWJsZWQiOiJhdXRvIiwiZW5hYmxlZEluTmFycm93IjoiYXV0byIsImFjdGl2ZSI6ImF1dG8iLCJhY3RpdmVGb3JNb2JpbGUiOiJhdXRvIn19fSwiYXV0b1RodW1ibmFpbCI6Imh0dHBzOlwvXC9ub3JtYW5kaWVtYWluZS5jZXJmcmFuY2UuZnJcL2FyYWQyXC93cC1jb250ZW50XC91cGxvYWRzXC9zaXRlc1wvM1wvM2QtZmxpcC1ib29rXC9hdXRvLXRodW1ibmFpbHNcLzIyNzIucG5nIiwicG9zdF9uYW1lIjoicXVlbGxlcy1zb250LWxlcy1wZXJzcGVjdGl2ZXMtZHUtc29qYS1kYW5zLWdyYW5kLW91ZXN0IiwicG9zdF90eXBlIjoiM2QtZmxpcC1ib29rIn19LCJwYWdlcyI6W10sImZpcnN0UGFnZXMiOltdfQ==');window.FB3D_CLIENT_LOCALE && FB3D_CLIENT_LOCALE.render && FB3D_CLIENT_LOCALE.render();<\/script>\n\n\n\n<h2 class=\"wp-block-heading\">Quatre facteurs techniques limitants pour le rendement du soja<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Localisation des diff\u00e9rents observatoires soja<\/h3>\n\n\n\n<p>En 2021, un r\u00e9seau de<strong> 62 parcelles de soja a \u00e9t\u00e9 mis en place sur le Grand Ouest avec un suivi <\/strong>\u00e0 trois moments\u00a0: <\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>phase d\u2019implantation, <\/li><li>floraison,<\/li><li>fin de cycle. <\/li><\/ol>\n\n\n\n<p>En Normandie, les parcelles choisies \u00e9taient sur des terres limoneuses ou limono-argileuses bien adapt\u00e9es \u00e0 la culture. Quant aux Pays de la Loire, \u00e0 peine 20 % ont \u00e9t\u00e9 implant\u00e9es sur des sols profonds. Le <strong>choix des parcelles n\u2019est donc pas toujours le plus propice \u00e0 exprimer le potentiel <\/strong>(sol \u00e0 faible r\u00e9serve utile et cailloux).<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"397\" height=\"386\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/localisation-differents-observatoires-soja-centre-ouest.png?resize=397%2C386&#038;ssl=1\" alt=\"Localisation des diff\u00e9rents observatoires soja sur la zone Centre-Ouest en 2021\" class=\"wp-image-2275\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/localisation-differents-observatoires-soja-centre-ouest.png?w=397&amp;ssl=1 397w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/localisation-differents-observatoires-soja-centre-ouest.png?resize=300%2C292&amp;ssl=1 300w\" sizes=\"(max-width: 397px) 100vw, 397px\" \/><figcaption>Localisation des diff\u00e9rents observatoires soja sur la zone Centre-Ouest en 2021<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Densit\u00e9 de semis et taux de lev\u00e9e en fonction du type de semoir<\/h3>\n\n\n\n<p>Le d\u00e9but de campagne 2021 a \u00e9t\u00e9 marqu\u00e9 par des conditions fra\u00eeches et humides qui ont compliqu\u00e9 les implantations. Les pertes \u00e0 la lev\u00e9e ont \u00e9t\u00e9 en moyenne de 24 %. <strong>Deux types de semoirs ont \u00e9t\u00e9 utilis\u00e9s mais aucune diff\u00e9rence significative n\u2019a \u00e9t\u00e9 relev\u00e9e<\/strong>. En Normandie, 100 % des parcelles ont \u00e9t\u00e9 implant\u00e9es avec des vari\u00e9t\u00e9s 000. Les deux vari\u00e9t\u00e9s que l\u2019on retrouve le plus dans cette r\u00e9gion sont ES COMANDOR et OBELIX. En Pays de la Loire, 84 % des vari\u00e9t\u00e9s \u00e9taient des vari\u00e9t\u00e9s 000 avec une dominante des vari\u00e9t\u00e9s SIRELIA et AURELINA. Les 16 % des vari\u00e9t\u00e9s restantes \u00e9taient alors des vari\u00e9t\u00e9s 00.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"797\" height=\"266\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/densite-semis-taux-levee-fonction-type-semoir.png?resize=797%2C266&#038;ssl=1\" alt=\"Densit\u00e9 de semis et taux de lev\u00e9e en fonction du type de semoir sur chaque observatoire en 2021\" class=\"wp-image-2276\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/densite-semis-taux-levee-fonction-type-semoir.png?w=797&amp;ssl=1 797w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/densite-semis-taux-levee-fonction-type-semoir.png?resize=300%2C100&amp;ssl=1 300w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/densite-semis-taux-levee-fonction-type-semoir.png?resize=768%2C256&amp;ssl=1 768w\" sizes=\"(max-width: 797px) 100vw, 797px\" \/><figcaption>Densit\u00e9 de semis et taux de lev\u00e9e en fonction du type de semoir sur chaque observatoire en 2021<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Les facteurs techniques limitants<\/h3>\n\n\n\n<p>Les<strong> principales attaques de ravageurs ont eu lieu en d\u00e9but de cycle avec principalement des d\u00e9g\u00e2ts d\u2019oiseaux et de mouches de semis<\/strong>. Des d\u00e9g\u00e2ts de li\u00e8vre ont \u00e9t\u00e9 fr\u00e9quemment relev\u00e9s mais sans cons\u00e9quence sur le rendement final.<\/p>\n\n\n\n<p>L\u2019ensemble des parcelles n\u2019ayant jamais re\u00e7u de soja, <strong>l\u2019inoculation a donc \u00e9t\u00e9 obligatoire pour que la symbiose entre la plante et la bact\u00e9rie s\u2019effectue<\/strong>. Environ 45 % des parcelles ont toutefois eu une <strong>nodulation faible <\/strong>avec moins de 10 nodosit\u00e9s\/plante voire aucune nodosit\u00e9 (objectif vis\u00e9 plus de 20 nodosit\u00e9s par plante). Plusieurs raisons peuvent alors expliquer cela\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>une mauvaise inoculation, <\/li><li>un reliquat azot\u00e9 trop \u00e9lev\u00e9 en d\u00e9but de cycle, <\/li><li>une humidit\u00e9 du sol trop importante en d\u00e9but de cycle,<\/li><li>des temp\u00e9ratures trop basses \u00e0 l\u2019implantation.<\/li><\/ul>\n\n\n\n<p>L\u2019<strong>enherbement a \u00e9t\u00e9<\/strong> \u00e9galement<strong> difficile \u00e0 ma\u00eetriser<\/strong>. En effet, seulement environ 50 % des parcelles sont jug\u00e9es propres \u00e0 moyennement propres en fin de cycle. Les principales adventices relev\u00e9es ont \u00e9t\u00e9 :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>le ch\u00e9nopode blanc,<\/li><li>la renou\u00e9e liseron, <\/li><li>la renou\u00e9e persicaire, <\/li><li>le chardon, <\/li><li>le s\u00e9ne\u00e7on,<\/li><li>la morelle.<\/li><\/ul>\n\n\n\n<p>Apr\u00e8s un retour de conditions plus chaudes sur la fin du mois de mai et d\u00e9but juin, les pluies ont ensuite \u00e9t\u00e9 cons\u00e9quentes de la mi-juin \u00e0 la mi-ao\u00fbt. <strong>Le d\u00e9but de floraison a donc \u00e9t\u00e9 marqu\u00e9 par l\u2019absence de stress hydrique et des sojas avec des biomasses luxuriantes<\/strong>. En revanche, \u00e0 partir de la mi-ao\u00fbt et jusqu\u2019\u00e0 la fin du cycle, les conditions ont \u00e9t\u00e9 beaucoup plus s\u00e8ches, p\u00e9nalisant potentiellement :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>le remplissage des gousses, <\/li><li>la taille des graines,<\/li><li>le taux de prot\u00e9ines.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Rendements obtenus<\/h3>\n\n\n\n<p>Les r<strong>endements obtenus sont alors mitig\u00e9s<\/strong>. Les rendements au niveau national sont en moyenne de 29 q\/ha. Toutefois, sur l\u2019observatoire, les rendements sont plut\u00f4t de 22,4 q\/ha.<\/p>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-6c531013 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/rendement-aux-normes.png?resize=518%2C280&#038;ssl=1\" alt=\"Rendement aux normes sur chaque observatoire (58 parcelles r\u00e9colt\u00e9es)\" class=\"wp-image-2277\" width=\"518\" height=\"280\" \/><figcaption>Rendement aux normes sur chaque observatoire (58 parcelles r\u00e9colt\u00e9es)<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/rendement-moyen-en-fonction-conduite-en-sec-ou-irrigue.png?h=300&#038;ssl=1\" alt=\"Rendement moyen de chaque observatoire en fonction de la conduite en sec ou en irrigu\u00e9e\" class=\"wp-image-2278\"  srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/rendement-moyen-en-fonction-conduite-en-sec-ou-irrigue.png?w=738&amp;ssl=1 738w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/rendement-moyen-en-fonction-conduite-en-sec-ou-irrigue.png?resize=300%2C166&amp;ssl=1 300w\" sizes=\"(max-width: 738px) 100vw, 738px\" \/><figcaption>Rendement moyen de chaque observatoire en fonction de la conduite en sec ou en irrigu\u00e9e<\/figcaption><\/figure>\n<\/div>\n\n\n\n<p>L\u2019irrigation a alors permis des gains de rendement dans certaines situations. Notamment en Sarthe, o\u00f9 les deux parcelles irrigu\u00e9es ont re\u00e7u quatre tours d\u2019eau de 25 mm.<\/p>\n\n\n\n<p>Le taux moyen de prot\u00e9ines est de 42 % ce qui est plut\u00f4t bon. Mais les PMG sont tr\u00e8s faibles. <strong>L\u2019absence de pluie a eu un effet n\u00e9gatif sur le remplissage des grains dans les situations \u00e0 faible r\u00e9serve utile et sans irrigation.<\/strong><\/p>\n\n\n\n<p>Les<strong> facteurs limitants identifi\u00e9s <\/strong>en 2021 confirment ceux identifi\u00e9s les ann\u00e9es pr\u00e9c\u00e9dentes\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Choix de parcelle et type de sol<\/strong> favorable \u00e0 la mise en place du potentiel<\/li><li><strong>Peuplement de lev\u00e9e<\/strong> trop faible<\/li><li>Gestion de l\u2019<strong>enherbement <\/strong>difficile<\/li><li><strong>Stress hydrique<\/strong> en fin de cycle<\/li><\/ul>\n\n\n\n<p>Ces r\u00e9f\u00e9rences seront alors compl\u00e9t\u00e9es par les r\u00e9sultats de 35 parcelles suivies en 2022.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Des prix de vente encore trop faibles pour le d\u00e9veloppement de la culture de soja (sc\u00e9narios Pays de Loire)<\/h2>\n\n\n\n<p>Une <strong>\u00e9tude technico\u00e9conomique de l\u2019insertion du soja en agriculture conventionnelle dans les assolements des Pays de la Loire <\/strong>a alors \u00e9t\u00e9 r\u00e9alis\u00e9e en valorisant les donn\u00e9es de rendement de Sarthe entre 2018 et 2021.<\/p>\n\n\n\n<p><strong>Quatre fermes types ont \u00e9t\u00e9 mod\u00e9lis\u00e9es<\/strong>\u00a0: <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Une <strong>exploitation polyculture \u00e9levage de bovins<\/strong> (102 ha sans prairies p\u00e2tur\u00e9es ni irrigation), <\/li><li>Deux <strong>exploitations polyculture \u00e9levage de monogastriques<\/strong> (148 ha, une sans irrigation et une avec irrigation partielle),<\/li><li>Une <strong>exploitation en grande cultures \u00e0 typologie vend\u00e9enne<\/strong> (148 ha avec irrigation partielle). <\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ferme polyculture \u00e9levage bovins lait avec 102 hectares en rotation<\/h3>\n\n\n\n<p><strong>Deux sc\u00e9narios ont \u00e9t\u00e9 \u00e9tudi\u00e9s<\/strong>\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Introduction de <strong>8 hectares de soja dans la rotation ma\u00efs ensilage\/bl\u00e9<\/strong> entra\u00eene alors une perte de marge brute de 63 \u20ac\/ha \u00e0 l\u2019\u00e9chelle de l\u2019exploitation ;<\/li><li>Introduction de <strong>10 ha de soja dans la rotation ma\u00efs ensilage\/bl\u00e9\/trois ans de prairies temporaires<\/strong> entra\u00eene alors une perte de marge brute de 13 \u20ac\/ha \u00e0 l\u2019\u00e9chelle de l\u2019exploitation.<\/li><\/ul>\n\n\n\n<p><strong>Si les indicateurs \u00e9conomiques sont d\u00e9grad\u00e9s, ce n\u2019est pas le cas pour les indicateurs sociaux, environnementaux et d\u2019\u00e9nergie<\/strong>. En effet, le soja est une culture peu consommatrice d\u2019intrants. L\u2019introduction de soja permet donc de r\u00e9duire jusqu\u2019\u00e0 10 % la quantit\u00e9 d\u2019azote total \u00e0 l\u2019hectare. Il permet \u00e9galement de diminuer les \u00e9missions de GES jusqu\u2019\u00e0 8 %.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"832\" height=\"549\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/indicateurs-economiques-sociaux-environnementaux-a-l-echelle-exploitation-polycyulture-elevage-bovins-laitiers.png?resize=832%2C549&#038;ssl=1\" alt=\"Indicateurs \u00e9conomiques, sociaux et environnementaux \u00e0 l'\u00e9chelle de l'exploitation sur la ferme tpe polyculture \u00e9levage bovins laitiers\" class=\"wp-image-2279\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/indicateurs-economiques-sociaux-environnementaux-a-l-echelle-exploitation-polycyulture-elevage-bovins-laitiers.png?w=832&amp;ssl=1 832w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/indicateurs-economiques-sociaux-environnementaux-a-l-echelle-exploitation-polycyulture-elevage-bovins-laitiers.png?resize=300%2C198&amp;ssl=1 300w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/indicateurs-economiques-sociaux-environnementaux-a-l-echelle-exploitation-polycyulture-elevage-bovins-laitiers.png?resize=768%2C507&amp;ssl=1 768w\" sizes=\"(max-width: 832px) 100vw, 832px\" \/><figcaption>Indicateurs \u00e9conomiques, sociaux et environnementaux \u00e0 l&rsquo;\u00e9chelle de l&rsquo;exploitation sur la ferme tpe polyculture \u00e9levage bovins laitiers &#8211; source Systerre<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Ferme polyculture \u00e9levage de monogastriques<\/h3>\n\n\n\n<p>Les r\u00e9sultats obtenus sur les fermes avec monogastriques, que ce soit en irrigu\u00e9 ou non, sont similaires avec une d\u00e9gradation des r\u00e9sultats \u00e9conomiques et une am\u00e9lioration des autres indicateurs. <strong>Malgr\u00e9 un gain de de rendement, l\u2019irrigation n\u2019a pas permis de r\u00e9duire l\u2019impact sur la marge brute \u00e0 l\u2019\u00e9chelle de de l\u2019exploitation<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L&rsquo;analyse technico-\u00e9conomique<\/h3>\n\n\n\n<p>L\u2019analyse technico-\u00e9conomique montre qu\u2019avec le niveau de rendement moyen observ\u00e9 sur les observatoires et un prix pay\u00e9 de 650 t\/\u20ac. <strong>Le soja n\u2019est donc aujourd\u2019hui pas comp\u00e9titif d\u2019un point de vue \u00e9conomique avec les autres cultures principales des r\u00e9gions \u00e9tudi\u00e9es<\/strong> (c\u00e9r\u00e9ales, colza, ma\u00efs). C\u2019\u00e9tait d\u00e9j\u00e0 la cas dans l\u2019analyse initiale r\u00e9alis\u00e9e en contexte de prix de vente des cultures et de charges d\u2019intrants plus faibles, m\u00eame si la diminution des marges brutes \u00e9taient moins importantes.<\/p>\n\n\n\n<p>Les simulations r\u00e9alis\u00e9es dans le contexte actuel 2022 montrent que les principales cultures du Grand Ouest obtiennent des marges brutes moyennes comprises en 1\u00a0500 et 2\u00a0400 \u20ac\/ha. Pour obtenir une marge brute en soja \u00e0 1\u00a0500 \u20ac\/ha avec un prix \u00e0 650 \u20ac\/t, il faudrait atteindre un rendement moyen d\u2019au moins 30 q\/ha (cf matrice prix\/rendement).<strong> Par ailleurs, si l\u2019on conserve un rendement moyen de 20 q\/ha, il faudrait alors un prix pay\u00e9 aux agriculteurs de 950 \u20ac\/t pour obtenir une marge brute de l\u2019ordre de 1\u00a0500 \u20ac\/ha.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"746\" height=\"314\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/matrice-prix-et-rendement-margue-brut-du-soja-conduite-pluviale-prix-de-vente.png?resize=746%2C314&#038;ssl=1\" alt=\"Matrice prix et rendement - marge brute du soja en conduite pluviale selon le rendement et le prix de vente (charges op\u00e9rationnelles fixes) en \u20ac\/ha\" class=\"wp-image-2280\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/matrice-prix-et-rendement-margue-brut-du-soja-conduite-pluviale-prix-de-vente.png?w=746&amp;ssl=1 746w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/12\/matrice-prix-et-rendement-margue-brut-du-soja-conduite-pluviale-prix-de-vente.png?resize=300%2C126&amp;ssl=1 300w\" sizes=\"(max-width: 746px) 100vw, 746px\" \/><figcaption>Matrice prix et rendement &#8211; marge brute du soja en conduite pluviale selon le rendement et le prix de vente (charges op\u00e9rationnelles fixes) en \u20ac\/ha<\/figcaption><\/figure>\n\n\n\n<p>Cette analyse explique an partie pourquoi la culture a du mal \u00e0 se d\u00e9velopper dans les r\u00e9gions du Centre Ouest de la France. <strong>Le prix pay\u00e9 au producteur est le premier frein au d\u00e9veloppement.<\/strong> En effet, il est trop faible pour assurer des marges brutes suffisamment comp\u00e9titives vis-\u00e0-vis des autres cultures du territoire. Bien que le soja pr\u00e9sente des atouts non n\u00e9gligeables (r\u00e9duction des intrants\u2026), ils ne permettent pas de compenser les diff\u00e9rences de marges brutes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources pour la r\u00e9daction des perspectives de d\u00e9veloppement du soja\u00a0:<\/h2>\n\n\n\n<p><em><a href=\"https:\/\/www.terresinovia.fr\/-\/soja-dans-le-grand-ouest-augmenter-l-autonomie-proteique-dans-les-elevages-et-developper-les-debouches-en-alimentation-humaine\" target=\"_blank\" rel=\"noreferrer noopener\">CHARRON M., 2022<\/a>. Etat des lieux et perspectives de d\u00e9veloppement du soja dans le bassin du Grand-Ouest de la France. <a href=\"https:\/\/www.terresinovia.fr\/cap-proteines\" target=\"_blank\" rel=\"noreferrer noopener\">Projet Cap Prot\u00e9ines<\/a><\/em><\/p>\n\n\n\n<p>Retrouvez \u00e9galement sur  notre site internet les r\u00e9sultats des <a href=\"https:\/\/normandiemaine.cerfrance.fr\/arad2\/essais-soja-prometteurs\/\" target=\"_blank\" rel=\"noreferrer noopener\">essais de culture de soja<\/a> dans l&rsquo;Orne.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quelles perspectives de d\u00e9veloppement du soja dans le bassin du Grand Ouest ?  <\/p>\n","protected":false},"author":4,"featured_media":2281,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","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":"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[39,32],"tags":[],"class_list":["post-2274","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nourrir-les-animaux","category-reductions-dintrants-en-cultures-et-en-elevage"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Perspectives de d\u00e9veloppement du soja - L&#039;ARAD2<\/title>\n<meta name=\"description\" content=\"L&#039;ARAD2 vous pr\u00e9sente 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