{"id":25684,"date":"2023-07-12T18:44:09","date_gmt":"2023-07-12T18:44:09","guid":{"rendered":"https:\/\/prograin.ca\/ca\/?p=25684"},"modified":"2025-08-13T14:38:28","modified_gmt":"2025-08-13T14:38:28","slug":"fertilisation-de-lazote-et-du-soufre-dans-le-soya","status":"publish","type":"post","link":"https:\/\/prograin.ca\/ca\/fr\/2023\/07\/12\/fertilisation-de-lazote-et-du-soufre-dans-le-soya\/","title":{"rendered":"Fertilisation de l&#8217;azote et du soufre dans le soya"},"content":{"rendered":"\n<p>Au cours de la saison, des probl\u00e8mes d\u2019insectes ou de mauvaises herbes peuvent survenir. Mais qu\u2019en est-il des carences en min\u00e9raux\u2009? Aujourd\u2019hui, on s\u2019int\u00e9resse \u00e0 la fertilisation de l\u2019azote et du soufre dans le soya ! Augmente-t-elle le rendement\u2009? C\u2019est ce que nous allons voir dans ce nouvel article de blogue !<\/p>\n\n\n\n<h2>L\u2019azote (N)<\/h2>\n\n\n\n<p>Bien que le soya capte l\u2019azote dans l\u2019air, les <a href=\"https:\/\/prograin.ca\/ca\/fr\/2020\/07\/22\/nutrient-deficiencies-in-soybeans\/\">carences<\/a> ne sont pas rares. C\u2019est au stade&nbsp;R4 et R5 que les besoins augmentent et plus particuli\u00e8rement dans un soya qui produit plus de 70 boisseaux\/acre. Pour un rendement \u00e9lev\u00e9, une population n\u00e9cessite de 200 \u00e0 300&nbsp;lb\/ac d\u2019azote. <\/p>\n\n\n\n<p>Le manque d\u00e9coule souvent d\u2019un sol trop humide, mal a\u00e9r\u00e9 ou trop sec. Dans ces conditions, la fixation de l\u2019azote devient plus difficile. Ainsi, les feuilles deviennent vert-clair et l\u2019on observe des probl\u00e8mes au niveau de la nodulation ou des racines.<\/p>\n\n\n\n<p><strong><u>Important<\/u><\/strong>&nbsp;: Si les carences en N ne sont pas corrig\u00e9es, elles peuvent entrainer une br\u00fblure des feuilles et m\u00eame une n\u00e9crose. <\/p>\n\n\n\n<h2>Le soufre (S)<\/h2>\n\n\n\n<p>Le soufre aide \u00e0 la formation d\u2019acides amin\u00e9s essentiels et \u00e0 l\u2019absorption de l\u2019azote. Il permet au soya de bien grandir tout au long du stade v\u00e9g\u00e9tatif et reproducteur. En d\u2019autres mots, c\u2019est un \u00e9l\u00e9ment important dans le d\u00e9veloppement des semences et dans le processus de photosynth\u00e8se.<\/p>\n\n\n\n<p>Plusieurs aspects jouent un r\u00f4le dans la faible quantit\u00e9 de soufre dans le soya&nbsp;:<\/p>\n\n\n\n<ul><li>R\u00e9duction des \u00e9missions industrielles, avec des taux actuels d\u2019environ 5&nbsp;livres par acre;<\/li><li>Un rendement \u00e9lev\u00e9 de 70 boisseaux de soya \u00e9limine en moyenne 13 livres de soufre;<\/li><li>Utilisation d\u2019un engrais sans soufre;<\/li><li>\u00c9vacuation du soufre par les racines en cas de pluie abondante ou d\u2019irrigation excessive.<\/li><\/ul>\n\n\n\n<p>Pour savoir si vos plantations de soya sont en carence, observez la coloration des feuilles. Une coloration vert-pale sur de jeunes plants est souvent un signe. <\/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\/07\/Capture2-1.png\" alt=\"\" class=\"wp-image-25718\" width=\"367\" height=\"274\" srcset=\"https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Capture2-1.png 716w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Capture2-1-300x223.png 300w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Capture2-1-24x18.png 24w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Capture2-1-36x27.png 36w, https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Capture2-1-48x36.png 48w\" sizes=\"(max-width: 367px) 100vw, 367px\" \/><\/figure>\n\n\n\n<p>@University of Nebraska et Mississippi State University<\/p>\n\n\n\n<h2>\u00c9tude &nbsp;<\/h2>\n\n\n\n<p>Une \u00e9quipe de chercheurs de Science for Success a test\u00e9 diverses strat\u00e9gies de fertilisation d\u2019azote et de soufre dans le soya et ce, \u00e0 diff\u00e9rents moments. Au total, c\u2019est plus de 26 essais d\u2019application faits dans plus de 12 \u00e9tats am\u00e9ricains ! <\/p>\n\n\n\n<p><strong>Voici les quatre points sur lesquels l\u2019\u00e9tude s\u2019est concentr\u00e9e&nbsp;: &nbsp;<\/strong><\/p>\n\n\n\n<p>1- Le rendement;<\/p>\n\n\n\n<p>2- Le statut de l\u2019azote dans le soya;<\/p>\n\n\n\n<p>3-&nbsp;La contribution de la fixation de l\u2019azote;<\/p>\n\n\n\n<p>4- Les incertitudes des trois derniers points mentionn\u00e9s en r\u00e9ponse \u00e0 la fertilisation de l\u2019azote et du soufre dans le soya en utilisant un protocole uniforme dans tous les environnements.<\/p>\n\n\n\n<p>Tout d\u2019abord, les membres de l\u2019\u00e9quipe ont test\u00e9 ind\u00e9pendamment les deux m\u00e9thodes de fertilisation. Ils ont aussi m\u00e9lang\u00e9 l\u2019azote et le soufre en fertilisant \u00bd des doses \u00e0 la plantation et \u00bd des doses au stade&nbsp;R3.<\/p>\n\n\n\n<p>Pour les trois quarts des sites, il n&#8217;y a pas eu, ou tr\u00e8s peu, de lien entre la fertilisation azot\u00e9e et le rendement obtenu. Quant au quart des sites restants, ils ont principalement r\u00e9agi aux applications de soufre et \u00e0 la combinaison de soufre et d&#8217;azote.<\/p>\n\n\n\n<p>Selon cette \u00e9tude, la fertilisation d\u2019azote n\u2019augmente pas le rendement. Il demeure cependant une incertitude face \u00e0 la r\u00e9ponse du traitement, ce qui peut conduire \u00e0 des recommandations non rentables et non durables.<\/p>\n\n\n\n<h2>Un mot pour la fin<\/h2>\n\n\n\n<p>Enfin, aucune \u00e9tude ne d\u00e9montre que la fertilisation de l\u2019azote avant ou pendant les semis am\u00e9liore le rendement. Quelques recherches r\u00e9alis\u00e9es aux \u00c9tats-Unis et en Ontario d\u00e9montrent quelques petites am\u00e9liorations, mais rien de plus (moins de 2 boisseaux\/ac).<\/p>\n\n\n\n<p>La plupart du temps, les besoins en N sont combl\u00e9s naturellement sauf dans le cas o\u00f9 le sol ne favorise pas la production de nodules. Les fertilisations d\u2019azote ne sont donc pas recommand\u00e9es, sauf en cas de carence. Quant \u00e0 la fertilisation en soufre, des recherches suppl\u00e9mentaires permettront d\u2019affirmer ou non si elle augmente le rendement.&nbsp;<\/p>\n\n\n\n<p class=\"has-small-font-size\"><strong>Sources&nbsp;:<\/strong><\/p>\n\n\n\n<p class=\"has-small-font-size\">A. Almeida <em>et al<\/em>., (2023). Soybean yield response to nitrogen and sulfur fertilization in the United States: contribution of soil N and N fixation process. <em>Science Direct<\/em>, <em>Volume<\/em> (145), 126791. <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S116103012300059X\">https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S116103012300059X<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\">A. Ciampitti, Antunes de Almeida and A. Correndo. (2023). <em>Nitrogen Fixation and Sulfur Fertility in Soybeans<\/em>. [Webinar] Sciences for Success. YouTube. <a href=\"https:\/\/www.youtube.com\/watch?v=N5WK0MAOhx8&amp;t=12s\">https:\/\/www.youtube.com\/watch?v=N5WK0MAOhx8&amp;t=12s<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\">Gouvernement de l\u2019Ontario. (2022). Apport en azote pour le soya \u00e0 fort rendement. <a href=\"https:\/\/www.ontario.ca\/fr\/page\/apport-dazote-pour-le-soya-fort-rendement\">Apport d\u2019azote pour le soya \u00e0 fort rendement | ontario.ca<\/a>&nbsp;<\/p>\n\n\n\n<p class=\"has-small-font-size\">Haigwood, W. (2023). Nitrogen and sulfur applications in soybean. <em>Delta FarmPress<\/em>. <a href=\"https:\/\/www.farmprogress.com\/soybean\/nitrogen-and-sulfur-applications-in-soybean-\">https:\/\/www.farmprogress.com\/soybean\/nitrogen-and-sulfur-applications-in-soybean-<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\">Le Bulletin des agriculteurs. (2022). S\u2019agit-il de jaunissement h\u00e2tif du soya\u2009? <em>Le Bulletin des agriculteurs. <\/em><a href=\"https:\/\/www.lebulletin.com\/cultures\/sagit-il-de-jaunissement-hatif-du-soya-120937\">https:\/\/www.lebulletin.com\/cultures\/sagit-il-de-jaunissement-hatif-du-soya-120937<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\">The Soy Hopper. (2023). The Difference Sulfur Makes in Soybeans. <em>United Soybean Board<\/em>. <a href=\"https:\/\/www.unitedsoybean.org\/hopper\/the-difference-sulfur-makes-in-soybeans\/\">The Difference Sulfur Makes in Soybeans &#8211; United Soybean Board<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Au cours de la saison, des probl\u00e8mes d\u2019insectes ou de mauvaises herbes peuvent survenir. Mais qu\u2019en est-il des carences en min\u00e9raux\u2009? Aujourd\u2019hui, on s\u2019int\u00e9resse \u00e0 la fertilisation de l\u2019azote et du soufre dans le soya ! Augmente-t-elle le rendement\u2009? C\u2019est ce que nous allons voir dans ce nouvel article de blogue ! L\u2019azote (N) Bien [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":25701,"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\/07\/Photo-Blogue-fotor-20230712153619-300x200.jpg","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.11 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Fertilisation de l&#039;azote et du soufre dans le 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\/07\/12\/fertilisation-de-lazote-et-du-soufre-dans-le-soya\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fertilisation de l&#039;azote et du soufre dans le soya - Prograin - Canada\" \/>\n<meta property=\"og:description\" content=\"Au cours de la saison, des probl\u00e8mes d\u2019insectes ou de mauvaises herbes peuvent survenir. 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Mais qu\u2019en est-il des carences en min\u00e9raux\u2009? Aujourd\u2019hui, on s\u2019int\u00e9resse \u00e0 la fertilisation de l\u2019azote et du soufre dans le soya ! Augmente-t-elle le rendement\u2009? C\u2019est ce que nous allons voir dans ce nouvel article de blogue ! L\u2019azote (N) Bien que le soya capte l\u2019azote dans l\u2019air, les carences ne sont pas rares. C\u2019est au stade&nbsp;R4 et R5 que les besoins augmentent et plus particuli\u00e8rement dans un soya qui produit plus de 70 boisseaux\/acre. Pour un rendement \u00e9lev\u00e9, une population n\u00e9cessite de 200 \u00e0 300&nbsp;lb\/ac&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\/07\/Photo-Blogue-fotor-20230712153619.jpg",1253,835,false],"thumbnail":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Photo-Blogue-fotor-20230712153619-150x150.jpg",150,150,true],"medium":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Photo-Blogue-fotor-20230712153619-300x200.jpg",300,200,true],"medium_large":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Photo-Blogue-fotor-20230712153619-768x512.jpg",768,512,true],"large":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Photo-Blogue-fotor-20230712153619.jpg",1253,835,false],"1536x1536":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Photo-Blogue-fotor-20230712153619.jpg",1253,835,false],"2048x2048":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Photo-Blogue-fotor-20230712153619.jpg",1253,835,false],"menu-24x24":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Photo-Blogue-fotor-20230712153619-24x16.jpg",24,16,true],"menu-36x36":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Photo-Blogue-fotor-20230712153619-36x24.jpg",36,24,true],"menu-48x48":["https:\/\/prograin.ca\/app\/uploads\/sites\/3\/2023\/07\/Photo-Blogue-fotor-20230712153619-48x32.jpg",48,32,true]},"post_excerpt_stackable_v2":"<p>Au cours de la saison, des probl\u00e8mes d\u2019insectes ou de mauvaises herbes peuvent survenir. Mais qu\u2019en est-il des carences en min\u00e9raux\u2009? Aujourd\u2019hui, on s\u2019int\u00e9resse \u00e0 la fertilisation de l\u2019azote et du soufre dans le soya ! Augmente-t-elle le rendement\u2009? C\u2019est ce que nous allons voir dans ce nouvel article de blogue ! L\u2019azote (N) Bien que le soya capte l\u2019azote dans l\u2019air, les carences ne sont pas rares. C\u2019est au stade&nbsp;R4 et R5 que les besoins augmentent et plus particuli\u00e8rement dans un soya qui produit plus de 70 boisseaux\/acre. Pour un rendement \u00e9lev\u00e9, une population n\u00e9cessite de 200 \u00e0 300&nbsp;lb\/ac&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 8 mois ago"},"absolute_dates":{"created":"Posted on 12 juillet 2023","modified":"Updated on 13 ao\u00fbt 2025"},"absolute_dates_time":{"created":"Posted on 12 juillet 2023 18 h 44 min","modified":"Updated on 13 ao\u00fbt 2025 14 h 38 min"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts\/25684"}],"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=25684"}],"version-history":[{"count":28,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts\/25684\/revisions"}],"predecessor-version":[{"id":27689,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/posts\/25684\/revisions\/27689"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/media\/25701"}],"wp:attachment":[{"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/media?parent=25684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/categories?post=25684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prograin.ca\/ca\/wp-json\/wp\/v2\/tags?post=25684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}