{"id":905,"date":"2021-03-22T14:42:00","date_gmt":"2021-03-22T13:42:00","guid":{"rendered":"https:\/\/www.elicit-plant.com\/?p=905"},"modified":"2024-10-02T09:55:11","modified_gmt":"2024-10-02T07:55:11","slug":"les-secheresses-tendent-a-remettre-en-question-limplantation-du-mais-en-france","status":"publish","type":"post","link":"https:\/\/www.elicit-plant.com\/fr\/blog\/changement-climatique\/les-secheresses-tendent-a-remettre-en-question-limplantation-du-mais-en-france\/","title":{"rendered":"Les\u00a0s\u00e9cheresses tendent \u00e0 remettre en question l\u2019implantation du ma\u00efs en France"},"content":{"rendered":"<section class=\"cbo-picture picture--contained\">\n\t<div class=\"picture-inner cbo-container container--small\">\n\t\t<div class=\"picture-element cbo-picture-cover\">\n\t\t\t<img decoding=\"async\" src=\"https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/les-secheresses-tendent-a-remettrent-en-question-limplantation-du-mais-en-france.jpg\" srcset=\"https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/les-secheresses-tendent-a-remettrent-en-question-limplantation-du-mais-en-france-320x180.jpg 320w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/les-secheresses-tendent-a-remettrent-en-question-limplantation-du-mais-en-france-768x432.jpg 840w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/les-secheresses-tendent-a-remettrent-en-question-limplantation-du-mais-en-france.jpg 1024w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/les-secheresses-tendent-a-remettrent-en-question-limplantation-du-mais-en-france.jpg 1400w\" class=\"\" alt=\"Les s&eacute;cheresses tendent &agrave; remettre en question l&rsquo;implantation du ma&iuml;s en France\" width=\"1000\" height=\"562\" sizes=\"auto, 100vw\" loading=\"lazy\" \/>\t\t<\/div>\n\n\t\t\t<\/div>\n<\/section>\n\n<section class=\"cbo-text cbo-margin-container\">\n    <div class=\"\n        text-inner\n                cbo-container\n        container--small        \"\n    >\n        <div class=\"text-content cbo-cms cms--large\">\n            <blockquote>\n<p><em>\u00ab\u00a0En 2019-2020, l\u2019Union europ\u00e9enne est devenue le premier importateur mondial de ma\u00efs avec environ 19 millions de tonnes, devant le Mexique et le Japon. Depuis plusieurs ann\u00e9es, l\u2019Europe, et particuli\u00e8rement la France, ont des surfaces cultiv\u00e9es en ma\u00efs en r\u00e9duction, alors que les besoins europ\u00e9ens ne cessent de cro\u00eetre. [\u2026] Cependant, la France a des rendements parmi les plus \u00e9lev\u00e9s au monde (autour de 10 tonnes par hectare), environ deux fois plus \u00e9lev\u00e9s que le Br\u00e9sil et la Chine\u00a0\u00bb,<\/em> souligne le Gnis.<\/p>\n<\/blockquote>\n<h2 class=\"wp-block-heading\">40\u00a0% des surfaces sont dans le Sud-Ouest de la France<\/h2>\n<p>La majorit\u00e9 du ma\u00efs est cultiv\u00e9e dans le Sud-Ouest de la France (40\u00a0% en Nouvelle-Aquitaine et Occitanie). Les rendements n\u2019ont cess\u00e9 de cro\u00eetre depuis les ann\u00e9es 50 (16\u00a0q\/ha en 1948 versus 93\u00a0q\/ha en 2018). Malgr\u00e9 ces hauts rendements, le service de statistique du minist\u00e8re de l\u2019Agriculture (Agreste) estimait, en 2018, que\u00a0<em>\u00ab\u00a0depuis 2014, avec le verdissement de la Pac qui promeut une diversification des cultures, les surfaces de ma\u00efs n\u2019ont cess\u00e9 de chuter. En Nouvelle-Aquitaine, cette r\u00e9duction est de 22\u00a0% en trois ans. Comparativement, en Grand-Est, la r\u00e9duction a \u00e9t\u00e9 moindre (-\u00a012\u00a0%). Les Pays de la Loire affichent une baisse de 23\u00a0% malgr\u00e9 une reprise de 8\u00a0% entre 2016 et 2017. Le recul s\u2019op\u00e8re \u00e0 la fois en surface et en nombre d\u2019exploitations, quelle que soit leur taille, mais plus particuli\u00e8rement au niveau des exploitations de moins de 5\u00a0ha de ma\u00efs\u00a0\u00bb<\/em>.<\/p>\n<p>Si la Pac a jou\u00e9 un r\u00f4le dans la r\u00e9duction des surfaces, la politique de la gestion de l\u2019eau a eu aussi un effet. Comme l\u2019explique le gouvernement,\u00a0<em>\u00ab\u00a0pour faire face \u00e0 une insuffisance de la ressource en eau en p\u00e9riode d\u2019\u00e9tiage, les pr\u00e9fets sont amen\u00e9s \u00e0 prendre des mesures exceptionnelles de limitation ou de suspension des usages de l\u2019eau en application de\u00a0<a class=\"ek-link\" href=\"https:\/\/www.legifrance.gouv.fr\/affichCodeArticle.do?cidTexte=LEGITEXT000006074220&amp;idArticle=LEGIARTI000006832985&amp;dateTexte=&amp;categorieLien=cid\">l\u2019article\u00a0L.211-3\u00a0<\/a><\/em><a class=\"ek-link\" href=\"https:\/\/www.legifrance.gouv.fr\/affichCodeArticle.do?cidTexte=LEGITEXT000006074220&amp;idArticle=LEGIARTI000006832985&amp;dateTexte=&amp;categorieLien=cid\"><em>II-1\u00b0 du code de l\u2019environnement.\u00a0<\/em><\/a>\u00bb Avec le changement climatique et les s\u00e9cheresses \u00e0 r\u00e9p\u00e9tition, les cultures ne sont plus prioritaires, dans certains d\u00e9partements, pour l\u2019acc\u00e8s \u00e0 l\u2019eau.<\/p>\n<h2 class=\"wp-block-heading\">Les s\u00e9cheresses, un risque r\u00e9el de perte de rendement<\/h2>\n<p>Or, le ma\u00efs a besoin d\u2019eau \u00e0 des stades bien pr\u00e9cis de son d\u00e9veloppement. A d\u00e9faut, une baisse de rendement sera observ\u00e9e comme le montre les r\u00e9sultats de campagnes de 2020, ann\u00e9e la plus chaude jamais enregistr\u00e9e en France\u00a0:\u00a0<em>\u00ab\u00a0Cette ann\u00e9e encore, le ma\u00efs fran\u00e7ais a subi de plein fouet les caprices du climat. [\u2026] Malgr\u00e9 une hausse des surfaces de 10\u00a0%, la production de ma\u00efs grain \u00e9valu\u00e9e \u00e0 13,6 Mt est d\u00e9cevante en raison d\u2019un rendement moyen de 89,4\u00a0q\/ha, [\u2026] inf\u00e9rieur \u00e0 la moyenne quinquennale (93,1\u00a0q\/ha). Comme pour 2019, les ma\u00efs irrigu\u00e9s remontent la moyenne\u00a0: l\u2019irrigation ne concerne que 35\u00a0% des surfaces de ma\u00efs grain mais 45\u00a0% de la production\u00a0\u00bb<\/em>. Il faut bien \u00e9videmment distinguer la production de ma\u00efs grain et celle de ma\u00efs fourrage. L\u2019impact d\u2019une s\u00e9cheresse sera moindre sur du ma\u00efs fourrage puisque l\u2019ensemble de la plante est r\u00e9colt\u00e9. Pour autant, dans certaines zones d\u2019\u00e9levages, sa culture est aussi remise en question du fait des s\u00e9cheresses r\u00e9currentes. Tout comme pour le ma\u00efs grain,\u00a0<a href=\"https:\/\/www.elicit-plant.com\/fr\/produits\/best-a-mais\/\" target=\"_blank\" rel=\"noreferrer noopener\">l\u2019agriculteur devra g\u00e9rer le risque d\u2019un manque d\u2019eau<\/a>.<\/p>\n<p>&nbsp;<\/p>\n<blockquote>\n<p>Le ma\u00efs, plante d\u00e9couverte au XVe si\u00e8cle par Christophe Colomb, occupe une large place dans le paysage agricole mondial. Il est la premi\u00e8re c\u00e9r\u00e9ale cultiv\u00e9e dans le monde devant le bl\u00e9 et le riz, observe l\u2019interprofession de semences et plants (Gnis)\u00a0et l\u2019Organisation des Nations-unies pour l\u2019alimentation et l\u2019agriculture (FAO). Le d\u00e9veloppement de cette plante est li\u00e9 \u00e0 son utilisation aussi bien en alimentation humaine qu\u2019animale. En France, d\u2019apr\u00e8s le Gnis, le ma\u00efs est utilis\u00e9 \u00e0 60\u00a0%\u00a0pour l\u2019alimentation animale, 30\u00a0%\u00a0pour l\u2019industrie et 10\u00a0%\u00a0pour l\u2019alimentation humaine. Cette r\u00e9partition diff\u00e8re selon les pays, le ma\u00efs \u00e9tant dans certains la premi\u00e8re ressource de l\u2019alimentation humaine. La consommation fran\u00e7aise de ma\u00efs doux est de moins de 1\u00a0kg par an et par habitant alors que les Am\u00e9ricains en consomment, eux, 11 kg\u00a0!\u00a0En alimentation animale, la culture apporte de l\u2019\u00e9nergie, sous forme de sucres, et vient en compl\u00e9ment du soja, qui fournit les prot\u00e9ines.<\/p>\n<\/blockquote>\n\n            <div style=\"clear: both;\"><\/div>\n        <\/div>\n    <\/div>\n<\/section>\n\n\n<section class=\"cbo-text cbo-margin-container\">\n    <div class=\"\n        text-inner\n                cbo-container\n        container--small        \"\n    >\n        <div class=\"text-content cbo-cms cms--large\">\n            <h2><strong>Int\u00e9ress\u00e9 par le Best-a ?<\/strong><\/h2>\n<div class=\"hs-cta-embed hs-cta-simple-placeholder hs-cta-embed-116449368823\" style=\"max-width: 100%; max-height: 100%; width: 350px; height: 435.40625px;\" data-hubspot-wrapper-cta-id=\"116449368823\"><a href=\"https:\/\/cta-eu1.hubspot.com\/web-interactives\/public\/v1\/track\/redirect?encryptedPayload=AVxigLIQ3T3H6ISih3xFgQd%2BBJnwcmc0WUNYpyRhFVK9Xnv9s%2BgE44yFBQ2e%2FJCPOrJYyrp4%2FTGeAtPEPkn%2FRczpOLNrqmAyXTg8Stkqucd3a25yzPd%2F4PVDM0G%2BKBq6zbATZWOLgrucmXfh2RHBk%2FWaoTPcWBrvutj7hAOwy0IpQoPmAlDYDr4av0AsDY5dlT6fHFrzyHGEZS9UW7HC43qUGKMRDLZF2%2Bh8x4PYX6RKuuJoqrUnQEfzZbHd4aX%2FovupSBCwng%3D%3D&amp;webInteractiveContentId=116449368823&amp;portalId=143801506\" target=\"_blank\" rel=\"noopener\"><br \/>\n<img decoding=\"async\" style=\"height: 100%; width: 100%; object-fit: fill;\" src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/143801506\/interactive-116449368823.png\" alt=\"Best-a-EliZea-Bayer-1\" \/><br \/>\n<\/a><\/div>\n\n            <div style=\"clear: both;\"><\/div>\n        <\/div>\n    <\/div>\n<\/section>\n\n\n<section class=\"cbo-featuredlinks featuredlinks--colorwhite\">\n\t<div class=\"featuredlinks-inner cbo-container \">\n\n\t\t\t\t\t<h2 class=\"cbo-title-2 featuredlinks-title\">\n\t\t\t\tNos autres articles autour du r\u00e9chauffement climatique\t\t\t<\/h2>\n\t\t\n\t\t<div class=\"featuredlinks-list\" data-anim-group data-group-delay=\"100\">\n\t\t\t\n\t\t\t<div class=\"list-el\">\n\t\t\t\t<a class=\"el-inner\" href=\"https:\/\/www.elicit-plant.com\/fr\/blog\/changement-climatique\/\">\n\n\t\t\t\t\t<figure class=\"inner-picture cbo-picture-cover\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/AdobeStock_243525780-768x428.jpeg\" srcset=\"https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/AdobeStock_243525780-320x178.jpeg 320w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/AdobeStock_243525780-768x428.jpeg 840w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/AdobeStock_243525780-768x428.jpeg 1024w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/AdobeStock_243525780-768x428.jpeg 1400w\" class=\"\" alt=\"Tractor spraying pesticides at soy bean fields\" width=\"768\" height=\"428\" sizes=\"auto, 100vw\" loading=\"lazy\" \/>\t\t\t\t\t<\/figure>\n\n\t\t\t\t\t<h3 class=\"inner-title cbo-title-3\">\n\t\t\t\t\t\tTous nos articles autour du changement climatique\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t<span class=\"inner-button cbo-buttonmore\">\n\t\t\t\t\t\t<i class=\"icon icon-cross\"><\/i>\n\t\t\t\t\t<\/span>\n\t\t\t\t<\/a>\n\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\n\t<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Bien que particuli\u00e8rement pr\u00e9sent en termes d\u2019utilisation, en alimentation animale et humaine, le ma\u00efs tend \u00e0 perdre des surfaces en France. Pourtant, les rendements y sont excellents. La gestion de l\u2019eau reste un \u00e9l\u00e9ment clef de son d\u00e9veloppement, et peut remettre en question son implantation, notamment avec les s\u00e9cheresses qui se multiplient.<\/p>\n","protected":false},"author":3,"featured_media":906,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[22],"class_list":["post-905","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-changement-climatique"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les\u00a0s\u00e9cheresses tendent \u00e0 remettre en question l\u2019implantation du ma\u00efs en France - Elicit Plant France<\/title>\n<meta name=\"description\" content=\"Le ma\u00efs tend \u00e0 perdre des surfaces en France. 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