{"id":8699,"date":"2026-01-30T13:00:17","date_gmt":"2026-01-30T13:00:17","guid":{"rendered":"https:\/\/lynxee.consulting\/?p=8699"},"modified":"2026-02-02T11:25:45","modified_gmt":"2026-02-02T11:25:45","slug":"france-2026-national-memo-on-the-sustainable-management-of-resistance-to-fungicides-in-cereals","status":"publish","type":"post","link":"https:\/\/lynxee.consulting\/en\/france-2026-national-memo-on-the-sustainable-management-of-resistance-to-fungicides-in-cereals\/","title":{"rendered":"FRANCE: 2026 national memo on the sustainable management of resistance to fungicides in cereals"},"content":{"rendered":"<p style=\"text-align: justify\"><span style=\"font-weight: 400\">This memo has been written by experts from INRAE, ANSES and ARVALIS. Its objective is to provide an overview (by disease and mode of action) of resistance to fungicides used on straw cereals, and to make recommendations with regard to these resistances with the aim of reducing and optimising fungicide treatments. The recommendations made in this memo encourage the use of prophylaxis, resistant varieties and decision support tools, to limit the use of treatments. National surveillance plans (DGAL, Arvalis performance network, <\/span><i><span style=\"font-weight: 400\">etc<\/span><\/i><span style=\"font-weight: 400\">.) and field data were used, among other things, to draft this memo.<\/span><\/p>\n<p style=\"text-align: justify\"><span style=\"font-weight: 400\">The note indicates that, concerning SDHI (Succinate DesHydrogenase Inhibitors), the proportion of resistant strains of <\/span><i><span style=\"font-weight: 400\">Zymoseptoria tritici<\/span><\/i><span style=\"font-weight: 400\"> remains stable (average frequency 36%), the resistance of <\/span><i><span style=\"font-weight: 400\">Pyrenophora teres<\/span><\/i><span style=\"font-weight: 400\"> is overall generalized, while those of <\/span><i><span style=\"font-weight: 400\">Puccinia triticina<\/span><\/i><span style=\"font-weight: 400\">, <\/span><i><span style=\"font-weight: 400\">P. striiformis<\/span><\/i><span style=\"font-weight: 400\"> and <\/span><i><span style=\"font-weight: 400\">P. hordei<\/span><\/i><span style=\"font-weight: 400\"> seem to progress at varying frequencies depending on the species and region.<\/span><\/p>\n<p style=\"text-align: justify\"><span style=\"font-weight: 400\">For <\/span><i><span style=\"font-weight: 400\">Zymoseptoria tritici<\/span><\/i><span style=\"font-weight: 400\">, it seems that resistance to SDHI is responsible for drop of efficacy, while for <\/span><i><span style=\"font-weight: 400\">Pyrenophora teres<\/span><\/i><span style=\"font-weight: 400\"> the loss of efficacy is obvious, and more or less serious depending on the frequency and nature of the resistant strains present. A drop of efficacy for several SDHIs was also observed on brown rust of wheat in some regions.<\/span><\/p>\n<p style=\"text-align: justify\"><span style=\"font-weight: 400\">It is therefore recommended to limit the use of SDHIs to a single application per campaign, all diseases combined, to diversify the modes of action, and to favor multi-site and\/or bio-fungicides when they can improve the efficacy and\/or the resistance management.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>To download (in French):\u00a0<\/b><\/p>\n<p><a href=\"https:\/\/www.yvoir.fr\/file-download\/download\/public\/81054\"><span style=\"font-weight: 400\">Note commune 2026 INRAE\/ANSES\/ARVALIS &#8211; fongicides c\u00e9r\u00e9ales \u00e0 paille<\/span><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><b>See also our previous articles:\u00a0<\/b><\/p>\n<p><a href=\"https:\/\/lynxee.consulting\/france-note-nationale-2025-pour-la-gestion-durable-de-la-resistance-aux-fongicides-sur-les-cereales-a-paille\/\"><span style=\"font-weight: 400\">FRANCE : Note nationale 2025 pour la gestion durable de la r\u00e9sistance aux fongicides sur les c\u00e9r\u00e9ales \u00e0 paille<\/span><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><b>Lynxee consulting<\/b><span style=\"font-weight: 400\">\u2019s team is at your disposal to answer your questions.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Contact us!<\/b> <a href=\"http:\/\/lynxee.consulting\/en\/contact\/\"><span style=\"font-weight: 400\">http:\/\/lynxee.consulting\/en\/contact\/<\/span><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h6><span style=\"font-weight: 400\">Photo credit: <\/span><span style=\"font-weight: 400\">Minka2507\/pixabay<\/span><\/h6>\n","protected":false},"excerpt":{"rendered":"<p>This memo has been written by experts from INRAE, ANSES and ARVALIS. Its objective is to provide an overview (by disease and mode of action) of<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":16,"featured_media":8693,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[564,153,522],"class_list":["post-8699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-regulation","tag-cereals","tag-resistance-en","tag-sdhi-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>FRANCE: 2026 national memo on the sustainable management of resistance to fungicides in cereals - Lynxee consulting<\/title>\n<meta name=\"description\" content=\"This memo has been written by experts from INRAE, ANSES and ARVALIS. 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