{"id":468,"date":"2020-04-30T15:41:29","date_gmt":"2020-04-30T19:41:29","guid":{"rendered":"https:\/\/maizex.com\/attention-au-semis-trop-hatif\/"},"modified":"2022-08-08T22:41:14","modified_gmt":"2022-08-09T02:41:14","slug":"attention-au-semis-trop-hatif","status":"publish","type":"post","link":"https:\/\/maizex.com\/fr\/attention-au-semis-trop-hatif\/","title":{"rendered":"Attention au Semis trop H\u00e2tif"},"content":{"rendered":"<p>En tant qu&rsquo;agriculteurs, l&rsquo;objectif principal devrait-&ecirc;tre de semer votre ma&iuml;s au moment opportun. La gestion du risque fait partie de votre quotidien. Le semis est l&rsquo;un des facteurs de risque qu&rsquo;il faut &eacute;valuer ad&eacute;quatement. Suis-je mieux de semer t&ocirc;t dans un sol froid ou attendre la fen&ecirc;tre id&eacute;ale et peut-&ecirc;tre risquer de semer tardivement comme l&rsquo;an dernier?<\/p>\n\n<p>Le premier crit&egrave;re pour un semis optimum et avoir une lev&eacute;e ad&eacute;quate des plants est de semer dans un sol ressuy&eacute; ayant une temp&eacute;rature minimale de 10 C. Id&eacute;alement, la temp&eacute;rature du sol devrait &ecirc;tre en croissance les jours suivants.<\/p>\n\n<p>L&rsquo;option du semis h&acirc;tif comporte des risques (Nielsen, 2020). Le principal risque est celui associ&eacute; &agrave; la temp&eacute;rature du sol. Lorsque la temp&eacute;rature du sol se maintien pr&egrave;s de 10oC pendant des jours apr&egrave;s le semis, cela retarde la germination et peut retarder l&#39;&eacute;mergence des jeunes plantules. Ce retard d&rsquo;&eacute;mergence peut causer des pertes de population par la pourriture de la semence. Cependant, si la temp&eacute;rature du sol est inf&eacute;rieure &agrave; 10oC lors du semis, cela augmente le risque de gel par r&eacute;hydratation de la semence causant des dommages &agrave; la semence en germination.<\/p>\n\n<p>Ce ph&eacute;nom&egrave;ne fait r&eacute;f&eacute;rence &agrave; l&#39;absorption initiale d&#39;eau par la semence durant les 24 &agrave; 48 premi&egrave;res heures suivant le semis. La r&eacute;hydratation qui en r&eacute;sulte fait gonfler la semence et le processus de germination commence. Cela se produit ind&eacute;pendamment de la temp&eacute;rature du sol. Les risques de blessures caus&eacute;es par le refroidissement (gel) de la semence est plus susceptible de se produire au cours des 24 &agrave; 48 premi&egrave;res heures apr&egrave;s le semis dans un sol humide, car c&#39;est &agrave; ce moment que la r&eacute;hydratation (gonflement de la semence) se produit.<\/p>\n\n<p>Bon printemps!<\/p>","protected":false},"excerpt":{"rendered":"<p>En tant qu&rsquo;agriculteurs, l&rsquo;objectif principal devrait-&ecirc;tre de semer votre ma&iuml;s au moment opportun. La gestion du risque fait partie de votre quotidien. Le semis est l&rsquo;un des facteurs de risque&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":[],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"footnotes":"","_tec_slr_enabled":"","_tec_slr_layout":""},"categories":[63],"tags":[446,448,440],"class_list":["post-468","post","type-post","status-publish","format-standard","hentry","category-agronomie","tag-mais-grain","tag-semis","tag-tips-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Attention au Semis trop H\u00e2tif - Maizex Seeds Inc.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/maizex.com\/fr\/attention-au-semis-trop-hatif\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Attention au Semis trop H\u00e2tif - Maizex Seeds Inc.\" \/>\n<meta property=\"og:description\" content=\"En tant qu&rsquo;agriculteurs, l&rsquo;objectif principal devrait-&ecirc;tre de semer votre ma&iuml;s au moment opportun. 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