{"id":25552,"date":"2023-06-08T12:34:23","date_gmt":"2023-06-08T12:34:23","guid":{"rendered":"https:\/\/prograin.ca\/ca\/?p=25552"},"modified":"2025-03-26T15:44:26","modified_gmt":"2025-03-26T15:44:26","slug":"levaluation-de-lemergence-du-soya","status":"publish","type":"post","link":"https:\/\/prograin.ca\/ca\/fr\/2023\/06\/08\/levaluation-de-lemergence-du-soya\/","title":{"rendered":"L&#8217;\u00e9valuation de l&#8217;\u00e9mergence du soya"},"content":{"rendered":"\n<p>Pour la majorit\u00e9 des agriculteurs, les <a href=\"https:\/\/prograin.ca\/ca\/fr\/2022\/04\/28\/les-meilleures-conditions-pour-des-semis-reussis\/\">semis<\/a> sont termin\u00e9s. Il est maintenant temps d\u2019\u00e9valuer la quantit\u00e9 de grains de soya qui ont \u00e9merg\u00e9 dans les champs. Au courant des premi\u00e8res semaines, le producteur doit v\u00e9rifier avec pr\u00e9cision la densit\u00e9 et la sant\u00e9 de sa population de soya. C\u2019est durant cette courte p\u00e9riode qu\u2019il peut ressemer si n\u00e9cessaire. <\/p>\n\n\n\n<h2>En chiffres\u00a0<\/h2>\n\n\n\n<p>Une bonne lev\u00e9e se situe au minimum autour de 85&nbsp;% de la population de grains sem\u00e9s, pour un total de 250&nbsp;000 (Minimum absolu) \u00e0 450&nbsp;000 plants \u00e0 l\u2019hectare. (100&nbsp;000 plants \u00e0 182&nbsp;000 plants\/acre)<\/p>\n\n\n\n<h2>Techniques pour calculer votre population<\/h2>\n\n\n\n<p><strong>La technique du cerceau<\/strong> et celle du<strong> c\u00e2ble <\/strong>sont de bons outils faciles d\u2019utilisation, efficaces et rapides pour d\u00e9terminer la densit\u00e9 du peuplement de la culture.<\/p>\n\n\n\n<h2>Le cerceau<\/h2>\n\n\n\n<ul type=\"1\"><li>Vous devez vous munir d\u2019un cerceau de style \u201chula hoop\u201d<\/li><li>Lancez-le \u00e0 au moins 5 endroits distincts dans votre champ au hasard en vous assurant d\u2019inclure les zones o\u00f9 certains grains n\u2019ont pas bien \u00e9merg\u00e9.<\/li><li>Comptez les plants dans chaque zone, calculez la moyenne, puis multipliez-l\u00e0 par le nombre appropri\u00e9.<\/li><\/ul>\n\n\n\n<p>Ce tableau fournit des facteurs de multiplication pour divers diam\u00e8tres de cerceaux qui permettent de calculer le taux de population \u00e0 l\u2019acre.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" src=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/05\/Capture-decran-2023-05-25-155138.png\" alt=\"\" class=\"wp-image-25597\" width=\"897\" height=\"433\" srcset=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/05\/Capture-decran-2023-05-25-155138.png 1142w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/05\/Capture-decran-2023-05-25-155138-300x145.png 300w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/05\/Capture-decran-2023-05-25-155138-768x372.png 768w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/05\/Capture-decran-2023-05-25-155138-24x12.png 24w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/05\/Capture-decran-2023-05-25-155138-36x17.png 36w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/05\/Capture-decran-2023-05-25-155138-48x23.png 48w\" sizes=\"(max-width: 897px) 100vw, 897px\" \/><\/figure>\n\n\n\n<p>Par exemple, si un cercle a un diam\u00e8tre de 21 pouces, multiplier le nombre de plants par 18&nbsp;119 pour d\u00e9terminer le nombre de plants par acre.<\/p>\n\n\n\n<h2>Le c\u00e2ble<\/h2>\n\n\n\n<p>Cette technique donne la population lev\u00e9e par acre \u00e0 partir d\u2019un simple calcul sur 3 m\u00e8tres de l\u2019un de vos rangs&nbsp;:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" src=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Capture-3.png\" alt=\"\" class=\"wp-image-25610\" width=\"544\" height=\"56\" srcset=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Capture-3.png 652w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Capture-3-300x31.png 300w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Capture-3-24x2.png 24w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Capture-3-36x4.png 36w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Capture-3-48x5.png 48w\" sizes=\"(max-width: 544px) 100vw, 544px\" \/><\/figure>\n\n\n\n<h2>Il est \u00e0 noter<\/h2>\n\n\n\n<p>Dans un cas de populations plus faibles, les plants de soya prennent de l\u2019expansion en grandissant et peuvent combler un certain vide. Les vari\u00e9t\u00e9s de soya qui ont une bonne capacit\u00e9 \u00e0 faire des branches peuvent occuper jusqu\u2019\u00e0 30 cm (12 po) \u00e0 l\u2019int\u00e9rieur des rangs et dans les entre-rangs. <\/p>\n\n\n\n<p>En revanche, lors de trop grands espaces entre les plants, les tiges risquent de se ramifier et de s\u2019affaisser. Certaines gousses peuvent aussi pousser pr\u00e8s du sol et entrainer des pertes. Enfin, l\u2019affaissement des plants apparait normalement lorsque la densit\u00e9 a diminu\u00e9 \u00e0 moins de 60&nbsp;% de la population.<\/p>\n\n\n\n<h2>Doit-on reprendre le travail?<\/h2>\n\n\n\n<p>Les grains de soya doivent d\u00e9ployer plus d\u2019effort qu\u2019un grain de ma\u00efs ou de bl\u00e9 lors de l\u2019\u00e9mergence. Pour sortir de terre, les jeunes pousses doivent litt\u00e9ralement tirer les cotyl\u00e9dons vers la surface. D\u00e9pendamment des conditions de sol apr\u00e8s les semis, ce travail peut s\u2019av\u00e9rer fastidieux. <\/p>\n\n\n\n<p>Pour une \u00e9valuation pr\u00e9cise de la population en champ, calculer l\u2019\u00e9mergence de vos plantules de soya dans plusieurs parties du champ, avec les techniques d\u00e9j\u00e0 propos\u00e9es.<\/p>\n\n\n\n<h2>Les causes d\u2019une mauvaise lev\u00e9e<\/h2>\n\n\n\n<ul><li>Certains <a href=\"https:\/\/prograin.ca\/ca\/fr\/2021\/10\/06\/le-phomopsis-dans-le-soya\/\">champignons<\/a> peuvent faire pourrir les semences (<em>Pythium<\/em>, <em>Phytophthora<\/em>, etc.); <\/li><li>Dommages caus\u00e9s par des insectes ravageurs comme la <a href=\"https:\/\/prograin.ca\/ca\/fr\/2023\/05\/11\/la-mouche-des-semis\/\">mouche des semis<\/a>; <\/li><li>Mauvaises conditions de sol; <\/li><li>Mauvais r\u00e9glages des \u00e9quipements de semis (grains en surface ou trop profonds); <\/li><li>Dommages caus\u00e9s par phytotoxicit\u00e9 (herbicide ou fertilisant); <\/li><li>Les conditions m\u00e9t\u00e9orologiques (croutage lorsque trop sec, etc). <\/li><\/ul>\n\n\n\n<p>Donc, pour prendre une d\u00e9cision \u00e9clair\u00e9e, il faut:<\/p>\n\n\n\n<ul><li>\u00c9valuer si la population est inf\u00e9rieure \u00e0 100,000 plants \u00e0 l&#8217;acre;<\/li><li>Identifier et corriger la cause d\u2019une population inad\u00e9quate;<\/li><li>Calculer que le rendement attendu est sup\u00e9rieur aux co\u00fbts de resemis.<\/li><\/ul>\n\n\n\n<p>Pour toutes questions suppl\u00e9mentaires, n\u2019h\u00e9sitez pas \u00e0 <a href=\"https:\/\/prograin.ca\/ca\/fr\/contact\/\">contacter<\/a> notre \u00e9quipe qui se fera un plaisir de vous r\u00e9pondre.<\/p>\n\n\n\n<p><strong>Vous pouvez aussi utiliser ce document pour plus d\u2019information: <\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"646\" height=\"846\" src=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calculations-des-populations-de-soya.png\" alt=\"\" class=\"wp-image-25619\" srcset=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calculations-des-populations-de-soya.png 646w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calculations-des-populations-de-soya-229x300.png 229w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calculations-des-populations-de-soya-18x24.png 18w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calculations-des-populations-de-soya-27x36.png 27w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calculations-des-populations-de-soya-37x48.png 37w\" sizes=\"(max-width: 646px) 100vw, 646px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"642\" height=\"804\" src=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calcul-des-populations-de-soya-2.png\" alt=\"\" class=\"wp-image-25620\" srcset=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calcul-des-populations-de-soya-2.png 642w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calcul-des-populations-de-soya-2-240x300.png 240w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calcul-des-populations-de-soya-2-19x24.png 19w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calcul-des-populations-de-soya-2-29x36.png 29w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/Calcul-des-populations-de-soya-2-38x48.png 38w\" sizes=\"(max-width: 642px) 100vw, 642px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Pour la majorit\u00e9 des agriculteurs, les semis sont termin\u00e9s. Il est maintenant temps d\u2019\u00e9valuer la quantit\u00e9 de grains de soya qui ont \u00e9merg\u00e9 dans les champs. Au courant des premi\u00e8res semaines, le producteur doit v\u00e9rifier avec pr\u00e9cision la densit\u00e9 et la sant\u00e9 de sa population de soya. C\u2019est durant cette courte p\u00e9riode qu\u2019il peut ressemer [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":25641,"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":"anouk","author_link":"https:\/\/prograin.ca\/ca\/author\/anouk\/"},"featured_img":"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-300x200.jpg","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.11 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L&#039;\u00e9valuation de l&#039;\u00e9mergence du 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\/2023\/06\/08\/levaluation-de-lemergence-du-soya\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L&#039;\u00e9valuation de l&#039;\u00e9mergence du soya - Prograin - Canada\" \/>\n<meta property=\"og:description\" content=\"Pour la majorit\u00e9 des agriculteurs, les semis sont termin\u00e9s. Il est maintenant temps d\u2019\u00e9valuer la quantit\u00e9 de grains de soya qui ont \u00e9merg\u00e9 dans les champs. Au courant des premi\u00e8res semaines, le producteur doit v\u00e9rifier avec pr\u00e9cision la densit\u00e9 et la sant\u00e9 de sa population de soya. 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Il est maintenant temps d\u2019\u00e9valuer la quantit\u00e9 de grains de soya qui ont \u00e9merg\u00e9 dans les champs. Au courant des premi\u00e8res semaines, le producteur doit v\u00e9rifier avec pr\u00e9cision la densit\u00e9 et la sant\u00e9 de sa population de soya. C\u2019est durant cette courte p\u00e9riode qu\u2019il peut ressemer si n\u00e9cessaire. En chiffres\u00a0 Une bonne lev\u00e9e se situe au minimum autour de 85&nbsp;% de la population de grains sem\u00e9s, pour un total de 250&nbsp;000 (Minimum absolu) \u00e0 450&nbsp;000 plants \u00e0 l\u2019hectare. (100&nbsp;000 plants \u00e0 182&nbsp;000 plants\/acre) Techniques pour calculer votre population La technique du&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":"anouk","url":"https:\/\/prograin.ca\/ca\/author\/anouk\/"},"comments_num":"0 comments","featured_image_urls_v2":{"full":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51.jpg",2507,1670,false],"thumbnail":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-150x150.jpg",150,150,true],"medium":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-300x200.jpg",300,200,true],"medium_large":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-768x512.jpg",768,512,true],"large":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-2000x1332.jpg",2000,1332,true],"1536x1536":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-1536x1023.jpg",1536,1023,true],"2048x2048":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-2048x1364.jpg",2048,1364,true],"menu-24x24":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-24x16.jpg",24,16,true],"menu-36x36":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-36x24.jpg",36,24,true],"menu-48x48":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/06\/fotor_2023-6-8_10_8_51-48x32.jpg",48,32,true]},"post_excerpt_stackable_v2":"<p>Pour la majorit\u00e9 des agriculteurs, les semis sont termin\u00e9s. Il est maintenant temps d\u2019\u00e9valuer la quantit\u00e9 de grains de soya qui ont \u00e9merg\u00e9 dans les champs. Au courant des premi\u00e8res semaines, le producteur doit v\u00e9rifier avec pr\u00e9cision la densit\u00e9 et la sant\u00e9 de sa population de soya. C\u2019est durant cette courte p\u00e9riode qu\u2019il peut ressemer si n\u00e9cessaire. En chiffres\u00a0 Une bonne lev\u00e9e se situe au minimum autour de 85&nbsp;% de la population de grains sem\u00e9s, pour un total de 250&nbsp;000 (Minimum absolu) \u00e0 450&nbsp;000 plants \u00e0 l\u2019hectare. (100&nbsp;000 plants \u00e0 182&nbsp;000 plants\/acre) Techniques pour calculer votre population La technique du&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":"anouk","url":"https:\/\/prograin.ca\/ca\/author\/anouk\/"},"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 3 ann\u00e9es ago","modified":"Updated 1 ann\u00e9e ago"},"absolute_dates":{"created":"Posted on 8 juin 2023","modified":"Updated on 26 mars 2025"},"absolute_dates_time":{"created":"Posted on 8 juin 2023 12 h 34 min","modified":"Updated on 26 mars 2025 15 h 44 min"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts\/25552"}],"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\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/comments?post=25552"}],"version-history":[{"count":36,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts\/25552\/revisions"}],"predecessor-version":[{"id":27376,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts\/25552\/revisions\/27376"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/media\/25641"}],"wp:attachment":[{"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/media?parent=25552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/categories?post=25552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/tags?post=25552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}