
{"id":23315,"date":"2024-05-29T14:07:33","date_gmt":"2024-05-29T14:07:33","guid":{"rendered":"https:\/\/prograin.ca\/ca\/?p=23315"},"modified":"2025-08-13T14:26:33","modified_gmt":"2025-08-13T14:26:33","slug":"tout-savoir-sur-levaluation-des-populations-de-soya","status":"publish","type":"post","link":"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/","title":{"rendered":"Tout savoir sur l\u2019\u00e9valuation des populations de soya"},"content":{"rendered":"\n<p>Maintenant que les semis de soya sont pour la plupart termin\u00e9s ou tr\u00e8s avanc\u00e9s dans les champs des producteurs, il est temps de s\u2019attarder \u00e0 la population lev\u00e9e, soit le nombre de plants \u00e9merg\u00e9s par rapport aux grains sem\u00e9s. Afin d\u2019obtenir un rendement optimal, on fait le tour du sujet pour vous !<\/p>\n\n\n\n<h2>L\u2019\u00e9mergence des plans<\/h2>\n\n\n\n<p>Il faut compter environ 7 \u00e0 20 jours apr\u00e8s les semis pour que les plants de soya \u00e9mergent. Ce d\u00e9lai varie en fonction de la temp\u00e9rature du sol\u00a0: plus elle est \u00e9lev\u00e9e, plus la germination est rapide, moins il y a de risque de probl\u00e8mes de germination. On parle d&#8217;environ 7 jours si le sol est \u00e0 20 \u00b0C et de 21 jours si le sol est \u00e0 10 \u00b0C. Les semis sont faits plus tardivement que la normale cette ann\u00e9e, donc on peut s&#8217;attendre \u00e0 une germination rapide avec le r\u00e9chauffement des sols. Il faut \u00e9galement savoir que les cultivars de soya ne r\u00e9pondent pas tous de la m\u00eame fa\u00e7on aux diff\u00e9rentes populations. Le plus important, c\u2019est de semer la population recommand\u00e9e de chaque vari\u00e9t\u00e9 !<\/p>\n\n\n\n<h2>En chiffres<\/h2>\n\n\n\n<p>Normalement, le producteur s\u00e8me entre 375\u00a0000 et 500\u00a0000 grains \u00e0 l\u2019hectare. S\u2019il atteint une population lev\u00e9e de 250\u00a0000 \u00e0 450\u00a0000 grains \u00e0 l\u2019hectare, le pari est relev\u00e9 haut la main ! En somme, il faut viser une lev\u00e9e de plus de 85&nbsp;% des grains sem\u00e9s.<\/p>\n\n\n\n<h2>Et si \u00e7a ne se passe pas comme pr\u00e9vu?<\/h2>\n\n\n\n<p>La population vis\u00e9e versus la\npopulation lev\u00e9e n\u2019est pas concluante? En de\u00e7\u00e0 de 250&nbsp;000 grains \u00e0 l\u2019hectare\n\u00e9merg\u00e9s, il est alors recommand\u00e9 de r\u00e9ensemencer si la date le permet. Cela\ndit, il est important de faire un bon diagnostic afin de bien comprendre les\ncauses de la mauvaise lev\u00e9e. <\/p>\n\n\n\n<h2>Les principales causes de pertes<\/h2>\n\n\n\n<p><strong>Les fluctuations dues au froid<\/strong><\/p>\n\n\n\n<ul><li>L\u2019expression anglaise &#171;&nbsp;&nbsp;<em>chilling injury<\/em>&nbsp;&nbsp;&#187; d\u00e9crit bien ce qu\u2019on entend par les alt\u00e9rations dues au froid, qui peuvent se produire lorsque l\u2019eau tr\u00e8s froide du sol est absorb\u00e9e par la semence dans les 24 heures suivant le semis.<\/li><\/ul>\n\n\n\n<p><strong>Les insectes ravageurs<\/strong><\/p>\n\n\n\n<ul><li>Ex&nbsp;: mouche des semis<\/li><\/ul>\n\n\n\n<p><strong>La fonte des semis<\/strong><\/p>\n\n\n\n<ul><li>Maladie fongique due \u00e0 des champignons pathog\u00e8nes, la fonte des semis affecte les racines et le collet, entra\u00eenant la mort des jeunes pousses. Le phytophthora fait partie des maladies souvent observ\u00e9es dans le soya.<\/li><\/ul>\n\n\n\n<p><strong>La profondeur des semis<\/strong><\/p>\n\n\n\n<ul><li>Des semis trop profonds de 2 po ou 2,5 po ou trop \u00e0 la surface \u00e0 moins de 1 po peuvent r\u00e9duire les populations en d\u00e9but de saison.<\/li><\/ul>\n\n\n\n<p><strong>Le manque d\u2019eau<\/strong><\/p>\n\n\n\n<h2>Que faire?<\/h2>\n\n\n\n<p>Il n\u2019est certainement pas trop tard pour consid\u00e9rer un r\u00e9ensemencement ! Un repr\u00e9sentant Prograin vous aidera \u00e0 dresser un arbre d\u00e9cisionnel pour poser le diagnostic et ainsi, \u00e9valuer les diff\u00e9rentes actions possibles. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Maintenant que les semis de soya sont pour la plupart termin\u00e9s ou tr\u00e8s avanc\u00e9s dans les champs des producteurs, il est temps de s\u2019attarder \u00e0 la population lev\u00e9e, soit le nombre de plants \u00e9merg\u00e9s par rapport aux grains sem\u00e9s. Afin d\u2019obtenir un rendement optimal, on fait le tour du sujet pour vous ! L\u2019\u00e9mergence des [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":26375,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":""},"categories":[272],"tags":[],"author_meta":{"display_name":"devmxo","author_link":"https:\/\/prograin.ca\/ca\/author\/devmxo\/"},"featured_img":"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D-300x200.png","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.11 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Tout savoir sur l\u2019\u00e9valuation des populations de soya - Prograin - Canada<\/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:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tout savoir sur l\u2019\u00e9valuation des populations de soya - Prograin - Canada\" \/>\n<meta property=\"og:description\" content=\"Maintenant que les semis de soya sont pour la plupart termin\u00e9s ou tr\u00e8s avanc\u00e9s dans les champs des producteurs, il est temps de s\u2019attarder \u00e0 la population lev\u00e9e, soit le nombre de plants \u00e9merg\u00e9s par rapport aux grains sem\u00e9s. Afin d\u2019obtenir un rendement optimal, on fait le tour du sujet pour vous ! L\u2019\u00e9mergence des [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/\" \/>\n<meta property=\"og:site_name\" content=\"Prograin - Canada\" \/>\n<meta property=\"article:published_time\" content=\"2024-05-29T14:07:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-13T14:26:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1253\" \/>\n\t<meta property=\"og:image:height\" content=\"835\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"devmxo\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"devmxo\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimation du temps de lecture\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/\"},\"author\":{\"name\":\"devmxo\",\"@id\":\"https:\/\/prograin.ca\/ca\/#\/schema\/person\/ce50a7718330353c9a83518fb731ec28\"},\"headline\":\"Tout savoir sur l\u2019\u00e9valuation des populations de soya\",\"datePublished\":\"2024-05-29T14:07:33+00:00\",\"dateModified\":\"2025-08-13T14:26:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/\"},\"wordCount\":485,\"publisher\":{\"@id\":\"https:\/\/prograin.ca\/ca\/#organization\"},\"inLanguage\":\"fr-CA\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/\",\"url\":\"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/\",\"name\":\"Tout savoir sur l\u2019\u00e9valuation des populations de soya - 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Afin d\u2019obtenir un rendement optimal, on fait le tour du sujet pour vous ! L\u2019\u00e9mergence des [&hellip;]","og_url":"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/","og_site_name":"Prograin - Canada","article_published_time":"2024-05-29T14:07:33+00:00","article_modified_time":"2025-08-13T14:26:33+00:00","og_image":[{"width":1253,"height":835,"url":"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D.png","type":"image\/png"}],"author":"devmxo","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"devmxo","Estimation du temps de lecture":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/#article","isPartOf":{"@id":"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/"},"author":{"name":"devmxo","@id":"https:\/\/prograin.ca\/ca\/#\/schema\/person\/ce50a7718330353c9a83518fb731ec28"},"headline":"Tout savoir sur l\u2019\u00e9valuation des populations de soya","datePublished":"2024-05-29T14:07:33+00:00","dateModified":"2025-08-13T14:26:33+00:00","mainEntityOfPage":{"@id":"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/"},"wordCount":485,"publisher":{"@id":"https:\/\/prograin.ca\/ca\/#organization"},"inLanguage":"fr-CA"},{"@type":"WebPage","@id":"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/","url":"https:\/\/prograin.ca\/ca\/fr\/2024\/05\/29\/tout-savoir-sur-levaluation-des-populations-de-soya\/","name":"Tout savoir sur l\u2019\u00e9valuation des populations de soya - 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Afin d\u2019obtenir un rendement optimal, on fait le tour du sujet pour vous ! L\u2019\u00e9mergence des plans Il faut compter environ 7 \u00e0 20 jours apr\u00e8s les semis pour que les plants de soya \u00e9mergent. Ce d\u00e9lai varie en fonction de la temp\u00e9rature du sol\u00a0: plus elle est \u00e9lev\u00e9e, plus la germination est rapide, moins il y a de risque de&hellip;<\/p>\n","category_list":"<a href=\"https:\/\/prograin.ca\/ca\/fr\/category\/non-classe-fr\/\" rel=\"category tag\">Non class\u00e9<\/a>","author_info":{"name":"devmxo","url":"https:\/\/prograin.ca\/ca\/author\/devmxo\/"},"comments_num":"0 comments","featured_image_urls_v2":{"full":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D.png",1253,835,false],"thumbnail":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D-150x150.png",150,150,true],"medium":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D-300x200.png",300,200,true],"medium_large":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D-768x512.png",768,512,true],"large":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D.png",1253,835,false],"1536x1536":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D.png",1253,835,false],"2048x2048":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D.png",1253,835,false],"menu-24x24":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D-24x16.png",24,16,true],"menu-36x36":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D-36x24.png",36,24,true],"menu-48x48":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2020\/05\/D-48x32.png",48,32,true]},"post_excerpt_stackable_v2":"<p>Maintenant que les semis de soya sont pour la plupart termin\u00e9s ou tr\u00e8s avanc\u00e9s dans les champs des producteurs, il est temps de s\u2019attarder \u00e0 la population lev\u00e9e, soit le nombre de plants \u00e9merg\u00e9s par rapport aux grains sem\u00e9s. Afin d\u2019obtenir un rendement optimal, on fait le tour du sujet pour vous ! L\u2019\u00e9mergence des plans Il faut compter environ 7 \u00e0 20 jours apr\u00e8s les semis pour que les plants de soya \u00e9mergent. Ce d\u00e9lai varie en fonction de la temp\u00e9rature du sol\u00a0: plus elle est \u00e9lev\u00e9e, plus la germination est rapide, moins il y a de risque de&hellip;<\/p>\n","category_list_v2":"<a href=\"https:\/\/prograin.ca\/ca\/fr\/category\/non-classe-fr\/\" rel=\"category tag\">Non class\u00e9<\/a>","author_info_v2":{"name":"devmxo","url":"https:\/\/prograin.ca\/ca\/author\/devmxo\/"},"comments_num_v2":"0 comments","coauthors":[],"tax_additional":{"categories":{"linked":["<a href=\"https:\/\/prograin.ca\/ca\/fr\/category\/non-classe-fr\/\" class=\"advgb-post-tax-term\">Non class\u00e9<\/a>"],"unlinked":["<span class=\"advgb-post-tax-term\">Non class\u00e9<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Posted 2 ann\u00e9es ago","modified":"Updated 8 mois ago"},"absolute_dates":{"created":"Posted on 29 mai 2024","modified":"Updated on 13 ao\u00fbt 2025"},"absolute_dates_time":{"created":"Posted on 29 mai 2024 14 h 07 min","modified":"Updated on 13 ao\u00fbt 2025 14 h 26 min"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts\/23315"}],"collection":[{"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/comments?post=23315"}],"version-history":[{"count":17,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts\/23315\/revisions"}],"predecessor-version":[{"id":27679,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts\/23315\/revisions\/27679"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/media\/26375"}],"wp:attachment":[{"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/media?parent=23315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/categories?post=23315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/tags?post=23315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}