{"id":1181,"date":"2023-03-13T15:45:00","date_gmt":"2023-03-13T14:45:00","guid":{"rendered":"https:\/\/www.elicit-plant.com\/?p=1181"},"modified":"2024-05-24T12:03:37","modified_gmt":"2024-05-24T10:03:37","slug":"le-stress-hydrique-nest-pas-une-fatalite-comment-le-prevenir","status":"publish","type":"post","link":"https:\/\/www.elicit-plant.com\/fr\/blog\/stress-hydrique\/le-stress-hydrique-nest-pas-une-fatalite-comment-le-prevenir\/","title":{"rendered":"Le stress hydrique n\u2019est pas une fatalit\u00e9. Comment le pr\u00e9venir\u00a0?"},"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\/dans-un-contexte-difficile-les-phytosterols-peuvent-ils-aider-a-tenir-le-choc-1.jpg\" srcset=\"https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/dans-un-contexte-difficile-les-phytosterols-peuvent-ils-aider-a-tenir-le-choc-1-320x180.jpg 320w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/dans-un-contexte-difficile-les-phytosterols-peuvent-ils-aider-a-tenir-le-choc-1-768x432.jpg 840w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/dans-un-contexte-difficile-les-phytosterols-peuvent-ils-aider-a-tenir-le-choc-1.jpg 1024w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/dans-un-contexte-difficile-les-phytosterols-peuvent-ils-aider-a-tenir-le-choc-1.jpg 1400w\" class=\"\" alt=\"Le stress hydrique n&rsquo;est pas une fatalit&eacute;. Comment le pr&eacute;venir ?\" 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            <p>Les rapports des experts en m\u00e9t\u00e9orologie convergent tous vers la m\u00eame conclusion\u00a0: d\u2019ici \u00e0 2050, il ne pleuvra pas moins, mais la r\u00e9partition de la pluviom\u00e9trie sur l\u2019ann\u00e9e sera diff\u00e9rente. Davantage de pluies en hiver et au printemps, moins en \u00e9t\u00e9 et \u00e0 l\u2019automne\u00a0: le tout, accompagn\u00e9 de s\u00e9cheresses estivales plus intenses. Le ma\u00efs n\u2019y \u00e9chappera pas. Alors sans \u00e9volution des pratiques culturales et de l\u2019itin\u00e9raire technique, son rendement sera, sans aucun doute, affect\u00e9. L\u2019exemple de la campagne pass\u00e9e nous l\u2019a prouv\u00e9\u00a0: un manque d\u2019eau durant la floraison impacte le nombre de grains, le poids de mille grains et, finalement, le rendement. Pour le ma\u00efs, la phase la plus sensible s\u2019\u00e9tend du stade \u00ab\u00a015 feuilles\u00a0\u00bb au stade \u00ab\u00a0limite d\u2019avortement des grains\u00a0\u00bb.<\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"wp-block-heading\">Opter pour des vari\u00e9t\u00e9s plus pr\u00e9coces<\/h2>\n<p>Heureusement, des leviers peuvent \u00eatre actionn\u00e9s pour contourner ou, du moins, att\u00e9nuer ce ph\u00e9nom\u00e8ne. Et d\u2019ailleurs, la combinaison de plusieurs d\u2019entre eux s\u2019affiche comme la strat\u00e9gie la plus efficace. Parmi ces leviers, le choix de vari\u00e9t\u00e9s pr\u00e9coces, plus r\u00e9sistantes \u00e0 la s\u00e9cheresse. Le ma\u00efs esquive ainsi les p\u00e9riodes de s\u00e9cheresse aux stades les plus sensibles. Un semis r\u00e9alis\u00e9 dans de bonnes conditions, dans un sol bien pr\u00e9par\u00e9, permettra \u00e9galement \u00e0 la plante d\u2019installer rapidement son syst\u00e8me racinaire, propice \u00e0 l\u2019exploration d\u2019une plus grande surface souterraine.<\/p>\n<h2 class=\"wp-block-heading\">Piloter l\u2019irrigation<\/h2>\n<p>Le pilotage de l\u2019irrigation concourt bien \u00e9videmment \u00e0 pr\u00e9server le rendement lors d\u2019ann\u00e9es difficiles. Mais rappelons que pr\u00e8s de 65\u00a0% des ma\u00efs grains fran\u00e7ais sont cultiv\u00e9s sans irrigation\u00a0: une part qui monte \u00e0 93\u00a0% en ma\u00efs fourrage. En situation irrigu\u00e9e, l\u2019utilisation d\u2019outils de pilotage, comme les sondes, devient incontournable pour raisonner au mieux les apports d\u2019eau. L\u2019enjeu\u00a0: d\u00e9clencher l\u2019irrigation au meilleur moment en tenant compte de la ressource r\u00e9ellement disponible dans le sol pour fournir la juste quantit\u00e9 aux cultures, au moment le plus opportun.<\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"wp-block-heading\">Ne pas n\u00e9gliger le d\u00e9sherbage et la gestion des r\u00e9sidus<\/h2>\n<p>Autre levier \u00e0 activer\u00a0: la gestion du d\u00e9sherbage. En effet, la pr\u00e9sence d\u2019adventices dans la parcelle augmente la concurrence pour l\u2019eau et les \u00e9l\u00e9ments min\u00e9raux entre le ma\u00efs et les mauvaises herbes. Ma\u00eetriser le salissement participe donc \u00e0 pr\u00e9server la plante d\u2019un \u00e9ventuel stress hydrique \u00e0 venir. \u00c0 l\u2019\u00e9chelle de la rotation, la mise en place de techniques culturales simplifi\u00e9es am\u00e9liore la teneur en mati\u00e8re organique des sols et leur capacit\u00e9 de r\u00e9tention de l\u2019eau. La gestion des pailles et des r\u00e9sidus de r\u00e9colte est \u00e0 ce titre capitale.<\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"wp-block-heading\">Les phytost\u00e9rols, pour aider le ma\u00efs \u00e0 se pr\u00e9parer<\/h2>\n<p>Au rang des nouveaut\u00e9s, pensons aussi aux biosolutions, \u00e0 l\u2019image du biostimulant BEST-a de la soci\u00e9t\u00e9 Elicit Plant. Cette solution \u00e0 base de phytost\u00e9rols aide la plante \u00e0 se pr\u00e9parer \u00e0 un \u00e9ventuel stress hydrique. Comment\u00a0? Les phytost\u00e9rols envoient des messages dans la plante pour qu\u2019elle limite l\u2019\u00e9vapotranspiration, r\u00e9duisant sa consommation d\u2019eau (de 10 \u00e0 20\u00a0%), sans impact sur l\u2019\u00e9laboration du rendement. L\u2019objectif est de l\u2019appliquer en pr\u00e9ventif, en une seule fois, avant que l\u2019eau ne vienne \u00e0 manquer. Si la s\u00e9cheresse survient, pas de stress\u00a0! La plante sera alors pr\u00eate \u00e0 l\u2019affronter.<\/p>\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 stress hydrique\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\/les-fortes-chaleurs-et-le-manque-deau-ont-penalise-la-production\/\">\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\/les-fortes-chaleurs-et-le-manque-d-eau-ont-penalise-la-production-1000x562-1-768x432.jpg\" srcset=\"https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/les-fortes-chaleurs-et-le-manque-d-eau-ont-penalise-la-production-1000x562-1-320x180.jpg 320w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/les-fortes-chaleurs-et-le-manque-d-eau-ont-penalise-la-production-1000x562-1-768x432.jpg 840w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/les-fortes-chaleurs-et-le-manque-d-eau-ont-penalise-la-production-1000x562-1-768x432.jpg 1024w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/les-fortes-chaleurs-et-le-manque-d-eau-ont-penalise-la-production-1000x562-1-768x432.jpg 1400w\" class=\"\" alt=\"Les fortes chaleurs et le manque d\u2019eau ont p\u00e9nalis\u00e9 la production\" width=\"768\" height=\"432\" 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\tLes fortes chaleurs et le manque d\u2019eau ont p\u00e9nalis\u00e9 la production\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\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\/stress-hydrique\/temoignages-ils-ont-choisi-best-a-mais-pour-securiser-les-rendements\/\">\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\/temoignages-ils-ont-choisi-best-a-pour-securiser-les-rendements.jpg\" srcset=\"https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/temoignages-ils-ont-choisi-best-a-pour-securiser-les-rendements-320x180.jpg 320w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/temoignages-ils-ont-choisi-best-a-pour-securiser-les-rendements.jpg 840w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/temoignages-ils-ont-choisi-best-a-pour-securiser-les-rendements.jpg 1024w, https:\/\/www.elicit-plant.com\/app\/uploads\/sites\/1\/2023\/07\/temoignages-ils-ont-choisi-best-a-pour-securiser-les-rendements.jpg 1400w\" class=\"\" alt=\"T\u00e9moignages\u00a0: ils ont choisi BEST-a ma\u00efs pour\u00a0s\u00e9curiser les rendements\" width=\"480\" height=\"270\" 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\tT\u00e9moignages : ils ont choisi BEST-a ma\u00efs pour s\u00e9curiser les rendements\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>Pas de doute, le ma\u00efs est de plus en plus souvent soumis \u00e0 des stress hydriques. Mais pas de panique, des leviers d\u2019action existent pour les pr\u00e9venir, les contourner ou, du moins, en att\u00e9nuer les effets. Et les essais le montrent, c\u2019est la combinaison de plusieurs solutions qui apporte les meilleurs r\u00e9sultats.<\/p>\n","protected":false},"author":3,"featured_media":1083,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"class_list":["post-1181","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stress-hydrique"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Le stress hydrique n\u2019est pas une fatalit\u00e9. 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