{"id":33961,"date":"2013-01-26T18:53:28","date_gmt":"2013-01-26T16:53:28","guid":{"rendered":"http:\/\/staging.sillon38.com\/?p=33961"},"modified":"2013-01-26T18:53:28","modified_gmt":"2013-01-26T16:53:28","slug":"comment-favoriser-la-diversification-des-cultures","status":"publish","type":"post","link":"https:\/\/www.sillon38.com\/blog\/2013\/01\/26\/comment-favoriser-la-diversification-des-cultures\/","title":{"rendered":"Comment favoriser la diversification des cultures ?"},"content":{"rendered":"<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"100%\">\n<tbody>\n<tr>\n<td id=\"esp_press_bloc01\"><span style=\"color: #333399;\"><br \/>\n<\/span><\/p>\n<h2>\n<table style=\"float:left;\" border=\"0\">\n<tbody>\n<tr>\n<td><span style=\"color: #333399;\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.inra.fr\/var\/plain\/storage\/images\/toute_l_actu\/temporaire\/colloque_diversification_cultures\/423567-4-fre-FR\/colloque_diversification_cultures_inra_fiche_presse_listitem.jpg\" border=\"0\" alt=\"\" width=\"88\" height=\"59\" align=\"left\" \/><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color: #333399;\"> La diversification des cultures progresse peu malgr\u00e9 son int\u00e9r\u00eat  environnemental et son inscription dans divers dispositifs incitatifs.  Les minist\u00e8res en charge  de l\u2019agriculture et de l\u2019environnement ont  command\u00e9 \u00e0 l&rsquo;Inra une \u00e9tude visant \u00e0 identifier les freins \u00e0 la  diversification des cultures en France, et les leviers mobilisables pour  la favoriser.<br \/>\n<\/span><\/h2>\n<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<\/tr>\n<tr>\n<td id=\"esp_press_bloc02\" align=\"left\"><span style=\"color: #333399;\"><br \/>\n<\/span><\/p>\n<div style=\"text-align: justify\"><span style=\"color: #333399;\">La r\u00e9volution agricole de  l&rsquo;apr\u00e8s-guerre a conduit \u00e0 une intensification et une sp\u00e9cialisation  importantes de l&rsquo;agriculture fran\u00e7aise, gr\u00e2ce au d\u00e9veloppement de la  m\u00e9canisation et des intrants industriels (engrais, pesticides) et  naturels (eau d\u2019irrigation). La structuration concomitante des fili\u00e8res  agro-industrielles a par ailleurs favoris\u00e9 une sp\u00e9cialisation r\u00e9gionale  des productions agricoles pour mieux garantir la quantit\u00e9 et la qualit\u00e9  des approvisionnements. <\/span><\/div>\n<div style=\"text-align: justify\"><span style=\"color: #333399;\">Cette sp\u00e9cialisation s\u2019est accompagn\u00e9e d\u2019une  r\u00e9duction du nombre d\u2019esp\u00e8ces cultiv\u00e9es et d\u2019un raccourcissement des  rotations, l\u2019efficacit\u00e9 croissante des produits phytosanitaires  permettant d\u2019att\u00e9nuer les effets agronomiques n\u00e9gatifs des rotations  courtes ou des assolements simplifi\u00e9s.<br \/>\n<\/span> <span style=\"color: #333399;\"><br \/>\nPlusieurs \u00e9tudes r\u00e9alis\u00e9es r\u00e9cemment par l\u2019Inra<sup>1<\/sup> ont mis en  avant la diversification des esp\u00e8ces cultiv\u00e9es, dans une exploitation  agricole ou \u00e0 l\u2019\u00e9chelle d\u2019un territoire, comme un levier d\u2019action pour  r\u00e9duire l\u2019usage d\u2019intrants chimiques et les nuisances environnementales  associ\u00e9es \u00e0 leur utilisation excessive. Mais cette diversification des  cultures doit aussi permettre le maintien de la comp\u00e9titivit\u00e9 de  l\u2019agriculture fran\u00e7aise dans le cadre d\u2019une \u00e9conomie de march\u00e9  mondialis\u00e9e. Elle doit, en outre, \u00eatre replac\u00e9e dans un contexte  agronomique ; en effet, les cultures de diversification ne prennent sens  que dans le cadre d&rsquo;assolements et de rotations qui n&rsquo;\u00e9taient pas  l&rsquo;objet de l&rsquo;\u00e9tude, mais qui sont essentiels pour effectuer un bilan  global de leur int\u00e9r\u00eat environnemental et \u00e9conomique.<br \/>\n<\/span> <span style=\"color: #333399;\"><br \/>\nL&rsquo;\u00e9tude de plusieurs esp\u00e8ces de diversification (chanvre, lin, pois,  luzerne, lupin, sorgho\u2026) met en \u00e9vidence non seulement une variabilit\u00e9  tr\u00e8s importante en termes de surfaces d\u2019implantation et de dynamique  d\u2019\u00e9volution de celles-ci, mais aussi de nombreux freins techniques \u00e0  leur d\u00e9veloppement li\u00e9s \u00e0 une disponibilit\u00e9 insuffisante de produits  phytosanitaires, de machines agricoles, de r\u00e9f\u00e9rences agronomiques et,  pour certaines, de vari\u00e9t\u00e9s. <\/span><\/div>\n<div style=\"text-align: justify\"><span style=\"color: #333399;\">Ces cultures constituent des march\u00e9s trop  petits pour rentabiliser des investissements dans tous ces domaines.  D&rsquo;autres freins interviennent en aval de la production, o\u00f9 ces esp\u00e8ces  se trouvent en concurrence avec des mati\u00e8res premi\u00e8res moins ch\u00e8res ou  plus accessibles.<br \/>\n<\/span> <span style=\"color: #333399;\"><br \/>\nA contrario, les cultures de diversification parviennent \u00e0 se d\u00e9velopper  lorsqu&rsquo;elles pr\u00e9sentent des qualit\u00e9s sp\u00e9cifiques reconnues et  r\u00e9mun\u00e9r\u00e9es sur des march\u00e9s diff\u00e9renci\u00e9s. Ce d\u00e9veloppement requiert aussi  une forte coordination entre tous les acteurs de la fili\u00e8re afin  d&rsquo;assurer des d\u00e9bouch\u00e9s r\u00e9mun\u00e9rateurs aux producteurs, un  approvisionnement s\u00e9curis\u00e9 aux industriels, et la mobilisation de la  recherche et du d\u00e9veloppement n\u00e9cessaires \u00e0 la ma\u00eetrise technique de la  production et de la transformation.<br \/>\n<\/span> <span style=\"color: #333399;\"><br \/>\nOr, un tel fonctionnement est difficile \u00e0 instaurer au sein du \u00ab\u00a0r\u00e9gime  sociotechnique\u00a0\u00bb dominant, o\u00f9 les int\u00e9r\u00eats des diff\u00e9rents acteurs des  fili\u00e8res, leurs choix techniques et \u00e9conomiques se renforcent les uns  les autres et concourent ainsi \u00e0 \u00ab\u00a0verrouiller\u00a0\u00bb les syst\u00e8mes productifs  autour des esp\u00e8ces majeures (bl\u00e9, ma\u00efs, colza\u2026). <\/span><\/div>\n<div style=\"text-align: justify\"><span style=\"color: #333399;\">Les cultures de  diversification ne peuvent alors se d\u00e9velopper que dans des \u00ab\u00a0niches\u00a0\u00bb,  partiellement isol\u00e9es de ce r\u00e9gime, qui permettent la mise en place  d\u2019apprentissages et la construction de r\u00e9seaux \u00e9conomiques capables de  supporter des fili\u00e8res de production et de commercialisation innovantes.<br \/>\n<\/span> <span style=\"color: #333399;\"><br \/>\nL\u2019\u00e9tude conclut que la diversification des cultures repose  n\u00e9cessairement sur la mobilisation simultan\u00e9e et organis\u00e9e de nombreux  acteurs pour permettre l\u2019\u00e9tablissement de d\u00e9bouch\u00e9s stables et  r\u00e9mun\u00e9rateurs. Pour impulser et faciliter cette mobilisation, l\u2019action  publique doit \u00eatre raisonn\u00e9e de mani\u00e8re syst\u00e9mique, et combiner  diff\u00e9rentes mesures compl\u00e9mentaires visant \u00e0 infl\u00e9chir et coordonner les  strat\u00e9gies de ces diff\u00e9rents acteurs. Deux grandes cat\u00e9gories de  leviers doivent \u00eatre mobilis\u00e9es :<\/span><\/div>\n<ul>\n<li><span style=\"color: #333399;\">Soutenir le d\u00e9veloppement de niches d\u2019innovation. Par exemple,  ouvrir ou compl\u00e9ter les dispositifs de partenariat entre acteurs des  fili\u00e8res, du conseil, de la recherche, de la s\u00e9lection et des  collectivit\u00e9s locales afin de permettre la construction ou la  consolidation de fili\u00e8res de diversification.<br \/>\n<\/span><\/li>\n<li><span style=\"color: #333399;\">Mais aussi, soutenir  l\u2019innovation, g\u00e9n\u00e9tique, agronomique, phytosanitaire ou li\u00e9es aux  technologies de transformation des produits, relative \u00e0 ces fili\u00e8res,  tout en prenant en compte et en valorisant la compl\u00e9mentarit\u00e9 de ces  efforts par rapport \u00e0 ceux consentis sur les esp\u00e8ces majeures.<\/span><\/li>\n<li><span style=\"color: #333399;\">Inciter le r\u00e9gime sociotechnique standard \u00e0 \u00e9voluer, \u00e0 ouvrir  des fen\u00eatres d\u2019opportunit\u00e9, \u00e0 la faveur desquelles certaines fili\u00e8res de  diversification pourront se d\u00e9velopper et d\u00e9passer le statut de niche.  Les r\u00e8glements de la PAC (Politique Agricole Commune) ou les incitations  \u00e0 la r\u00e9duction des intrants chimiques ont ici un r\u00f4le \u00e0 jouer. Dans ce  cadre, la poursuite de d\u00e9marches d\u2019acquisition de r\u00e9f\u00e9rences techniques  larges sur les syst\u00e8mes qui int\u00e8grent des cultures de diversification  serait particuli\u00e8rement utile.<\/span><\/li>\n<\/ul>\n<div style=\"text-align: justify;\"><span style=\"color: #333399;\"><br \/>\nEnfin, il appara\u00eet n\u00e9cessaire de mettre ce travail en perspective en le  situant plus globalement par rapport \u00e0 l&rsquo;ensemble des syst\u00e8mes de  culture et \u00e0 l&rsquo;ensemble des fili\u00e8res fran\u00e7aises et en essayant de  proposer des sc\u00e9narios quantitatifs et d\u2019en \u00e9valuer les cons\u00e9quences, \u00e0  l\u2019instar de ce qui a \u00e9t\u00e9 fait dans l\u2019\u00e9tude \u00ab Ecophyto R&amp;D \u00bb. <\/span><\/div>\n<div style=\"text-align: justify;\"><span style=\"color: #333399;\">Il  serait notamment int\u00e9ressant d\u2019\u00e9valuer plus pr\u00e9cis\u00e9ment ce que l\u2019on peut  esp\u00e9rer gagner en termes d&rsquo;impacts environnementaux globaux gr\u00e2ce \u00e0  l\u2019adoption de ces cultures de diversification.<\/span><\/div>\n<h6><span style=\"color: #333399;\"><sup>1<\/sup>Etudes \u00ab\u00a0EcoPhyto R&amp;D\u00a0\u00bb (2010) et \u00ab\u00a0R\u00e9duire les fuites  de nitrates au moyen des cultures interm\u00e9diaires\u00a0\u00bb (2012) ; Expertises  scientifiques collectives \u00ab\u00a0Pesticides, Agriculture et Environnement\u00a0\u00bb  (2005), \u00ab\u00a0S\u00e9cheresse et Agriculture\u00a0\u00bb (2006), \u00ab\u00a0Agriculture et  Biodiversit\u00e9\u00a0\u00bb (2008) et\u00a0 \u00ab\u00a0Vari\u00e9t\u00e9s Tol\u00e9rantes aux Herbicides\u00a0\u00bb (2011).<\/span><\/h6>\n<div style=\"text-align: justify\"><span style=\"color: #333399;\"><br \/>\n<\/span> <span style=\"color: #333399;\"><br \/>\n<\/span> <span style=\"color: #333399;\"><strong>Retrouvez l\u2019ensemble des r\u00e9sultats de l\u2019\u00e9tude dans le document de synth\u00e8se<\/strong> : <a href=\"http:\/\/www.inra.fr\/l_institut\/etudes\/diversification_des_cultures\" target=\"_blank\" rel=\"noopener\">http:\/\/www.inra.fr\/l_institut\/etudes\/diversification_des_cultures<\/a><\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>La diversification des cultures progresse peu malgr\u00e9 son int\u00e9r\u00eat environnemental, quelles en sont les raisons?<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[2959],"class_list":["post-33961","post","type-post","status-publish","format-standard","hentry","category-agriculture","tag-inra"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comment favoriser la diversification des cultures ? 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