{"id":1413,"date":"2026-08-18T10:40:50","date_gmt":"2026-08-18T09:40:50","guid":{"rendered":"https:\/\/ceres.srl\/?p=1413"},"modified":"2026-08-18T10:40:50","modified_gmt":"2026-08-18T09:40:50","slug":"tomato-crop-irrigation-stategy-in-august-adapting-irrigation-to-shorter-days","status":"publish","type":"post","link":"https:\/\/ceres.srl\/fr\/2026\/08\/18\/tomato-crop-irrigation-stategy-in-august-adapting-irrigation-to-shorter-days\/","title":{"rendered":"Strat\u00e9gie d'irrigation de la culture de tomate en Ao\u00fbt: adapter la conduite aux jours plus courts"},"content":{"rendered":"<p data-start=\"168\" data-end=\"380\" class=\"PDq2pG_selectionAnchorContainer\">En ao\u00fbt, la strat\u00e9gie d\u2019irrigation doit \u00e9voluer avec la diminution de la dur\u00e9e du jour. L\u2019objectif est double : maintenir un bon \u00e9quilibre hydrique du substrat et limiter les d\u00e9sordres physiologiques, notamment l\u2019\u00e9clatement des fruits.<\/p>\n<p data-start=\"168\" data-end=\"380\" class=\"PDq2pG_selectionAnchorContainer\"><span aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"><\/span><\/p><p data-start=\"382\" data-end=\"401\"><strong><u>Arr\u00eat d'irrigation<\/u><\/strong><\/p><p data-start=\"403\" data-end=\"624\">L\u2019irrigation peut \u00eatre arr\u00eat\u00e9e environ 1,5 \u00e0 2,5 heures avant le coucher du soleil, avec pour objectif d\u2019obtenir une baisse d\u2019environ 8 % de la teneur en eau du substrat (WC) avant le premier tour du lendemain matin.<\/p><p data-start=\"626\" data-end=\"787\">Si la teneur en eau chute de plus de 4 % dans les 3 heures suivant la derni\u00e8re irrigation, un l\u00e9ger apport nocturne peut \u00eatre r\u00e9alis\u00e9 entre le coucher du soleil et minuit.<\/p><p data-start=\"789\" data-end=\"974\">Cette strat\u00e9gie permet de r\u00e9tablir l\u2019humidit\u00e9 du substrat tout en \u00e9vitant un d\u00e9marrage trop pr\u00e9coce de l\u2019irrigation le matin, susceptible d\u2019augmenter la pression racinaire et le risque d\u2019\u00e9clatement des fruits.<\/p>\n<p data-start=\"976\" data-end=\"1010\"><strong>D\u00e9clenchement de l\u2019irrigation le matin<\/strong><\/p><p data-start=\"1012\" data-end=\"1039\">Trois param\u00e8tres peuvent \u00eatre utilis\u00e9s :<\/p><p data-start=\"1041\" data-end=\"1218\">\u2022 Poids du substrat : apr\u00e8s une baisse d\u2019environ 2 % de l\u2019humidit\u00e9 depuis le lever du soleil<br data-start=\"1126\" data-end=\"1129\">\n\u2022 Rayonnement cumul\u00e9 : autour de 120 J\/cm\u00b2<br data-start=\"1170\" data-end=\"1173\">\n\u2022 Temps : environ 2,5 heures apr\u00e8s le lever du soleil<\/p>\n<p data-start=\"1220\" data-end=\"1247\"><strong><u>Strat\u00e9gie au cours de la journ\u00e9e<\/u><\/strong><\/p><p data-start=\"1249\" data-end=\"1368\">Le premier drainage devrait \u00eatre obtenu au plus tard 4 heures apr\u00e8s le lever du soleil, ou apr\u00e8s 3 \u00e0 4 tours d\u2019irrigation maximum.<\/p><p data-start=\"1370\" data-end=\"1463\">L\u2019irrigation peut ensuite \u00eatre pilot\u00e9e en fonction de la lumi\u00e8re, avec une r\u00e9f\u00e9rence d\u2019environ :<\/p><p data-start=\"1465\" data-end=\"1512\">3,0 \u00e0 3,5 ml d\u2019eau par J\/cm\u00b2\/m\u00b2 accumul\u00e9.<\/p><p data-start=\"1514\" data-end=\"1742\">En fin de journ\u00e9e, une gestion plus pr\u00e9cise consiste \u00e0 arr\u00eater l\u2019irrigation lorsque le rayonnement instantan\u00e9 descend \u00e0 environ \ud835\udfd0\ud835\udfce\ud835\udfce \ud835\udc16\/\ud835\udc26\u00b2, ou lorsque le rayonnement restant jusqu\u2019au coucher du soleil est d\u2019environ \ud835\udfcf\ud835\udfd3\ud835\udfce \ud835\udc09\/\ud835\udc1c\ud835\udc26\u00b2.<\/p>\n<p>\n\n\n\n\n\n\n\n\n\n\n\n\n<\/p><p data-start=\"1744\" data-end=\"1876\" data-is-last-node=\"\" data-is-only-node=\"\" class=\"\">En Ao\u00fbt, quelques ajustements sur les horaires et les volumes peuvent faire une grande diff\u00e9rence sur la qualit\u00e9 des fruits et la stabilit\u00e9 de la culture.<\/p>\n\n<p data-start=\"834\" data-end=\"1009\"><\/p><p><br><br><br><br><\/p><p data-start=\"1347\" data-end=\"1556\"><br><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":1415,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_siteseo_robots_primary_cat":"18","pagelayer_contact_templates":[],"_pagelayer_content":"","_themeisle_gutenberg_block_has_review":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[20,1],"tags":[],"class_list":["post-1413","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical_advices","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/ceres.srl\/wp-content\/uploads\/2026\/08\/SWC-Graph.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/posts\/1413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/comments?post=1413"}],"version-history":[{"count":3,"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/posts\/1413\/revisions"}],"predecessor-version":[{"id":1417,"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/posts\/1413\/revisions\/1417"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/media\/1415"}],"wp:attachment":[{"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/media?parent=1413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/categories?post=1413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceres.srl\/fr\/wp-json\/wp\/v2\/tags?post=1413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}