{"id":23153,"date":"2021-01-15T16:05:50","date_gmt":"2021-01-15T16:05:50","guid":{"rendered":"https:\/\/prograin.ca\/ca-west\/?p=23153"},"modified":"2025-06-25T13:22:24","modified_gmt":"2025-06-25T13:22:24","slug":"a-status-update-on-the-soybean-cyst-nematode","status":"publish","type":"post","link":"https:\/\/prograin.ca\/ca-west\/en\/2021\/01\/15\/a-status-update-on-the-soybean-cyst-nematode\/","title":{"rendered":"A Status Update on the Soybean Cyst Nematode"},"content":{"rendered":"\n<p>While it has been commonly found in southwestern Ontario since 1988, the soybean cyst nematode (SCN) first appeared in Qu\u00e9bec in 2013. SCN is one of the parasites causing the most damage to soybean crops in the world and can lead to a yield loss of up to 30&nbsp;% without visible symptoms being exhibited. While impossible to eradicate, the disease can still be controlled through testing and the implementation of best crop management practices to limit the spread and active reproduction of the parasite.&nbsp;<\/p>\n\n\n\n<h2>What are the symptoms?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"355\" height=\"265\" src=\"https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/Soya_Kystes_N\u00e9matode.png\" alt=\"\" class=\"wp-image-23151\" srcset=\"https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/Soya_Kystes_N\u00e9matode.png 355w, https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/Soya_Kystes_N\u00e9matode-300x224.png 300w, https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/Soya_Kystes_N\u00e9matode-24x18.png 24w, https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/Soya_Kystes_N\u00e9matode-36x27.png 36w, https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/Soya_Kystes_N\u00e9matode-48x36.png 48w\" sizes=\"(max-width: 355px) 100vw, 355px\" \/><\/figure>\n\n\n\n<p>The various signs of SCN infestation generally appear two months after seeding. The symptoms are:<\/p>\n\n\n\n<ul><li>White, yellow or brown cysts on the secondary roots (visible to the naked eye)<\/li><li>Chlorosis (leaf yellowing)<\/li><li>Round yellow patches in the field along the tillage direction<\/li><li>Stunting<\/li><li>Reduced number of side roots<\/li><li>Reduced nodulation of the soybean<\/li><li>Canopy slower to cover the space between rows<\/li><li>Early maturity of certain zones<\/li><li>Yield loss<\/li><li>Plant death (in extreme cases)<\/li><\/ul>\n\n\n\n<h2>How to detect SCN?<\/h2>\n\n\n\n<p>Cyst population density is at its highest when soybean plants are fully mature. Testing for SCN should be performed at plant maturity or immediately after harvesting. However, the absence of cysts on a plant doesn\u2019t mean there are no parasites in the field. For this reason, it is recommended to analyze the soil and roots in at-risk soybean fields in the fall. A field is deemed at risk if:<\/p>\n\n\n\n<ul><li>It shows one or many of the symptoms listed above&nbsp;<\/li><li>Soybean has been grown as a monoculture for at least three consecutive years<\/li><li>Contract work is often performed&nbsp;<\/li><li>There is significant weed presence<\/li><li>The field is located near another field where SCN was detected&nbsp;<\/li><\/ul>\n\n\n\n<p><strong>Sampling&nbsp;&gt;<\/strong> Collect 25&nbsp;soil samples from the root zone with a probe or an auger. Mix the samples and collect 1&nbsp;litre of the mixture to create a representative sample. Send this sample to the MAPAQ\u2019s <a href=\"https:\/\/www.mapaq.gouv.qc.ca\/demandephytoprotection\/Pages\/demande.aspx\" target=\"_blank\" rel=\"noreferrer noopener\">Laboratoire d\u2019expertise et de diagnostic en phytoprotection (LEDP) <\/a>or any Ontario soil laboratory that tests for SCN.<\/p>\n\n\n\n<h2>What should you do if SCN is detected?<\/h2>\n\n\n\n<p>It is advised to rotate crops with a non-host crop such as corn, wheat or non-susceptible soybean varieties such as Enyo E3, Rick R2X and Nano R2X and purchase seeds that were treated against SCN. SCN can be spread by the wind, birds and soil transportation. Cleaning machines and equipment, as well as screening guests is also advisable. Infested fields must also be harvested or seeded last.&nbsp;<\/p>\n\n\n\n<h2>What\u2019s the situation?<\/h2>\n\n\n\n<p>At the moment, SCN is fortunately not an issue in Qu\u00e9bec, but we must remain cautious in the future. Let\u2019s not forget that waterhemp was introduced in the province through soil residues on used equipment coming from the United States. We must be vigilant if we don\u2019t want the same thing to happen with SCN!&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>While it has been commonly found in southwestern Ontario since 1988, the soybean cyst nematode (SCN) first appeared in Qu\u00e9bec in 2013. SCN is one of the parasites causing the most damage to soybean crops in the world and can lead to a yield loss of up to 30&nbsp;% without visible symptoms being exhibited. While [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":23152,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":""},"categories":[15],"tags":[],"author_meta":{"display_name":"devmxo","author_link":"https:\/\/prograin.ca\/ca-west\/author\/devmxo\/"},"featured_img":"https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-300x200.jpg","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.11 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A Status Update on the Soybean Cyst Nematode - Western 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-west\/en\/2021\/01\/15\/a-status-update-on-the-soybean-cyst-nematode\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Status Update on the Soybean Cyst Nematode - Western Canada\" \/>\n<meta property=\"og:description\" content=\"While it has been commonly found in southwestern Ontario since 1988, the soybean cyst nematode (SCN) first appeared in Qu\u00e9bec in 2013. 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SCN is one of the parasites causing the most damage to soybean crops in the world and can lead to a yield loss of up to 30&nbsp;% without visible symptoms being exhibited. While impossible to eradicate, the disease can still be controlled through testing and the implementation of best crop management practices to limit the spread and active reproduction of the parasite.&nbsp; What are the symptoms? The various signs of SCN infestation generally appear two months after seeding.&hellip;<\/p>\n","category_list":"<a href=\"https:\/\/prograin.ca\/ca-west\/en\/category\/unclassified\/\" rel=\"category tag\">Unclassified<\/a>","author_info":{"name":"devmxo","url":"https:\/\/prograin.ca\/ca-west\/author\/devmxo\/"},"comments_num":"0 comments","featured_image_urls_v2":{"full":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-scaled.jpg",2560,1710,false],"thumbnail":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-150x150.jpg",150,150,true],"medium":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-300x200.jpg",300,200,true],"medium_large":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-768x513.jpg",768,513,true],"large":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-2000x1336.jpg",2000,1336,true],"1536x1536":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-1536x1026.jpg",1536,1026,true],"2048x2048":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-2048x1368.jpg",2048,1368,true],"menu-24x24":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-24x16.jpg",24,16,true],"menu-36x36":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-36x24.jpg",36,24,true],"menu-48x48":["https:\/\/prograin.ca\/app\/uploads\/sites\/4\/2021\/01\/ProGrain-134-48x32.jpg",48,32,true]},"post_excerpt_stackable_v2":"<p>While it has been commonly found in southwestern Ontario since 1988, the soybean cyst nematode (SCN) first appeared in Qu\u00e9bec in 2013. SCN is one of the parasites causing the most damage to soybean crops in the world and can lead to a yield loss of up to 30&nbsp;% without visible symptoms being exhibited. While impossible to eradicate, the disease can still be controlled through testing and the implementation of best crop management practices to limit the spread and active reproduction of the parasite.&nbsp; What are the symptoms? The various signs of SCN infestation generally appear two months after seeding.&hellip;<\/p>\n","category_list_v2":"<a href=\"https:\/\/prograin.ca\/ca-west\/en\/category\/unclassified\/\" rel=\"category tag\">Unclassified<\/a>","author_info_v2":{"name":"devmxo","url":"https:\/\/prograin.ca\/ca-west\/author\/devmxo\/"},"comments_num_v2":"0 comments","coauthors":[],"tax_additional":{"categories":{"linked":["<a href=\"https:\/\/prograin.ca\/ca-west\/en\/category\/unclassified\/\" class=\"advgb-post-tax-term\">Unclassified<\/a>"],"unlinked":["<span class=\"advgb-post-tax-term\">Unclassified<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Posted 5 ann\u00e9es ago","modified":"Updated 10 mois ago"},"absolute_dates":{"created":"Posted on 15 janvier 2021","modified":"Updated on 25 juin 2025"},"absolute_dates_time":{"created":"Posted on 15 janvier 2021 16 h 05 min","modified":"Updated on 25 juin 2025 13 h 22 min"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/posts\/23153"}],"collection":[{"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/comments?post=23153"}],"version-history":[{"count":4,"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/posts\/23153\/revisions"}],"predecessor-version":[{"id":23681,"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/posts\/23153\/revisions\/23681"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/media\/23152"}],"wp:attachment":[{"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/media?parent=23153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/categories?post=23153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prograin.ca\/ca-west\/wp-json\/wp\/v2\/tags?post=23153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}