{"id":2766,"date":"2023-09-05T09:37:32","date_gmt":"2023-09-05T07:37:32","guid":{"rendered":"https:\/\/normandiemaine.cerfrance.fr\/arad2\/?p=2766"},"modified":"2023-11-30T19:15:38","modified_gmt":"2023-11-30T18:15:38","slug":"regulation-biologique-des-adventices-par-les-couverts-vegetaux","status":"publish","type":"post","link":"https:\/\/normandiemaine.cerfrance.fr\/arad2\/regulation-biologique-des-adventices-par-les-couverts-vegetaux\/","title":{"rendered":"R\u00e9gulation biologique des adventices par les couverts v\u00e9g\u00e9taux"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">M\u00e9canismes de r\u00e9gulation des adventices par les couverts v\u00e9g\u00e9taux<\/h1>\n\n\n\n<p>D\u00e9couvrez dans cet article quels sont les m\u00e9canismes de r\u00e9gulation biologique des adventices par les couverts v\u00e9g\u00e9taux.<\/p>\n\n\n\n<p>Les syst\u00e8mes de culture agro\u00e9cologiques ont pour objectif de valoriser les services rendus par les interactions entre organismes dans la parcelle agricole afin de r\u00e9duire le recours aux intrants chimiques. La r\u00e9gulation biologique des adventices par les couverts v\u00e9g\u00e9taux cultiv\u00e9s en est un exemple et peut impliquer diff\u00e9rents m\u00e9canismes.<\/p>\n\n\n\n<p>La comp\u00e9tition pour les ressources est le m\u00e9canisme pr\u00e9pond\u00e9rant mais l\u2019all\u00e9lopathie peut \u00e9galement jouer un r\u00f4le m\u00eame si ses effets au champ sont difficiles \u00e0 d\u00e9montrer. Les couverts v\u00e9g\u00e9taux peuvent \u00e9galement affecter les adventices en modifiant le microclimat \u00e0 la surface du sol. Cette r\u00e9gulation peut aussi se faire par l\u2019intervention d\u2019organismes auxiliaires comme des insectes responsables de pr\u00e9dation ou des microorganismes pathog\u00e8nes responsables de parasitisme. Cependant, on ne sait pas \u00e0 ce jour si ces m\u00e9canismes peuvent avoir un impact significatif sur la banque de graines et la flore adventice exprim\u00e9es dans les cultures suivantes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Deux cat\u00e9gories de m\u00e9canismes de r\u00e9gulation biologique des adventices par les couverts v\u00e9g\u00e9taux<\/strong><\/h2>\n\n\n\n<p>Les m\u00e9canismes de r\u00e9gulation biologique des adventices par les couverts v\u00e9g\u00e9taux se r\u00e9partissent en deux cat\u00e9gories :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Les m\u00e9canismes \u00e0 effet direct regroupant la comp\u00e9tition pour les ressources (lumi\u00e8re et ressources du sol), l\u2019all\u00e9lopathie (lib\u00e9ration de compos\u00e9s biochimiques par une plante vivante ou par les r\u00e9sidus de la plante apr\u00e8s sa destruction) et la modification du microclimat \u00e0 la surface du sol.<\/li>\n\n\n\n<li>Les m\u00e9canismes \u00e0 effet indirect faisant intervenir des organismes auxiliaires comme des insectes pr\u00e9dateurs ou des microorganismes parasistes.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"656\" height=\"394\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/regulation-des-adventices.png?resize=656%2C394&#038;ssl=1\" alt=\"m\u00e9canismes r\u00e9gulation adventices\" class=\"wp-image-2767\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/regulation-des-adventices.png?w=656&amp;ssl=1 656w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/regulation-des-adventices.png?resize=300%2C180&amp;ssl=1 300w\" sizes=\"(max-width: 656px) 100vw, 656px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Comp\u00e9tition sur les ressources entre couvert et adventices<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Cinq facteurs influen\u00e7ant le niveau de comp\u00e9tition<\/strong> <\/h3>\n\n\n\n<p>La comp\u00e9tition g\u00e9n\u00e9r\u00e9e par les couverts cultiv\u00e9s sur les adventices d\u00e9pend&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Des dates de lev\u00e9e relatives des diff\u00e9rentes plantes composant la communaut\u00e9. Les adventices les plus nuisibles sont celles qui l\u00e8vent au m\u00eame moment que le couvert cultiv\u00e9. Celles qui l\u00e8vent avant sont le plus souvent d\u00e9truites lors d\u2019op\u00e9rations culturales, alors que celles qui l\u00e8vent apr\u00e8s subissent la comp\u00e9tition g\u00e9n\u00e9r\u00e9e par le couvert d\u00e9j\u00e0 en place.<\/li>\n\n\n\n<li>Du niveau de disponibilit\u00e9 en ressources&nbsp;: pour une plante donn\u00e9e, l\u2019acc\u00e8s \u00e0 la lumi\u00e8re d\u00e9pend fortement de son positionnement hi\u00e9rarchique dans le couvert.<\/li>\n\n\n\n<li>De la dynamique des besoins des plantes qui sont d\u00e9pendants de la vitesse et du potentiel de croissances des plantes.<\/li>\n\n\n\n<li>De la capacit\u00e9 des plantes \u00e0 pr\u00e9lever les ressources. Ainsi, une colonisation du sol rapide en largeur et en profondeur, avec une forte densit\u00e9 de racines et\/ou une forte capacit\u00e9 d\u2019absorption par les racines seront favorables \u00e0 un accroissement du pouvoir comp\u00e9titif.<\/li>\n\n\n\n<li>De la capacit\u00e9 des plantes \u00e0 s\u2019adapter \u00e0 une limitation des ressources en modifiant par exemple leur morphologie et\/ou l\u2019allocation de biomasse entre les diff\u00e9rents compartiments a\u00e9rien et racinaire.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D\u2019abord une comp\u00e9tition pour la lumi\u00e8re<\/strong><\/h3>\n\n\n\n<p>La comp\u00e9tition pour les ressources est le m\u00e9canisme consid\u00e9r\u00e9 comme pr\u00e9pond\u00e9rant dans la r\u00e9gulation des adventices par les couverts v\u00e9g\u00e9taux. Elle se produit lorsque les plantes partagent un pool de ressources commun, dans l\u2019espace et dans le temps, et qui est insuffisant pour r\u00e9pondre aux besoins de toutes les plantes.<\/p>\n\n\n\n<p>Les plantes les plus efficaces pour r\u00e9primer les adventices par comp\u00e9tition pour la lumi\u00e8re sont celles qui s\u2019installent rapidement avec des feuilles fines et larges (plut\u00f4t que petites et \u00e9paisses), qui ont tendance \u00e0 cro\u00eetre en largeur et qui sont capables d\u2019adapter leur morphologie en cas d\u2019ombrage par les plantes voisines.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Encore peu de r\u00e9f\u00e9rences sur la comp\u00e9tition pour les ressources du sol<\/strong><\/h3>\n\n\n\n<p>Si la lumi\u00e8re a longtemps \u00e9t\u00e9 consid\u00e9e comme la principale ressource pour laquelle la comp\u00e9tition s\u2019exerce, celle pour les ressources du sol peut \u00eatre tr\u00e8s importante dans les couverts v\u00e9g\u00e9taux. En effet, ils sont souvent implant\u00e9s en \u00e9t\u00e9, p\u00e9riode pendant laquelle les ressources en nutriments et en eau peuvent \u00eatre faibles.<\/p>\n\n\n\n<p>Une analyse d\u00e9taill\u00e9e de la litt\u00e9rature scientifique indique, dans la moiti\u00e9 des articles analysant les effets de la fertilisation azot\u00e9e sur les rapports culture-adventices, qu\u2019une r\u00e9duction de la quantit\u00e9 d\u2019azote apport\u00e9e favorise les adventices au d\u00e9triment des cultures. Un quart des \u00e9tudes montre l\u2019inverse alors qu\u2019aucun effet n\u2019est observ\u00e9 pour le dernier quart.<\/p>\n\n\n\n<p>Les adventices les plus probl\u00e9matiques en culture sont g\u00e9n\u00e9ralement des esp\u00e8ces tr\u00e8s nitrophiles car elles occupent pr\u00e9f\u00e9rentiellement des habitats riches en azote. Plus une esp\u00e8ce est nitrophile, plus son potentiel de croissance a\u00e9rienne est \u00e9lev\u00e9 et plus sa croissance d\u00e9pend de la disponibilit\u00e9 en azote du sol. En outre, moins elle alloue de biomasse \u00e0 ses racines mais chaque unit\u00e9 racinaire est plus efficiente \u00e0 pr\u00e9lever l\u2019azote du sol.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>All\u00e9lopathie<\/strong> pour r\u00e9guler les adventices<\/h2>\n\n\n\n<p>L\u2019all\u00e9lopathie est un m\u00e9canisme par lequel une plante (vivante ou ses r\u00e9sidus en d\u00e9composition) affecte la croissance des plantes voisines par la production de compos\u00e9s chimiques lib\u00e9r\u00e9s dans l&rsquo;environnement. Alors que de nombreuses \u00e9tudes montrent des effets all\u00e9lopathiques en laboratoire, les effets au champ sont difficiles \u00e0 d\u00e9montrer car ils sont difficiles \u00e0 dissocier de ceux de la comp\u00e9tition pour les ressources. En effet, le proximit\u00e9 des racines des plantes vivantes et des adventices n\u00e9cessaire pour que des effets all\u00e9lopathiques soient d\u00e9celables favorise \u00e9galement la comp\u00e9tition pour les ressources.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Modification du microclimat \u00e0 la surface du sol<\/strong><\/h2>\n\n\n\n<p>Les couverts v\u00e9g\u00e9taux sont en capacit\u00e9 de modifier le microclimat \u00e0 la surface du sol, notamment en termes de temp\u00e9rature, lumi\u00e8re et humidit\u00e9. Ces facteurs influencent notamment la germination et l\u2019\u00e9mergence des adventices. En effet, environ la moiti\u00e9 des esp\u00e8ces adventices sont photosensibles, c\u2019est-\u00e0-dire n\u00e9cessitant de la lumi\u00e8re pour germer. La pr\u00e9sence d\u2019un couvert peut r\u00e9duire l\u2019exposition \u00e0 la lumi\u00e8re mais \u00e9galement modifier sa qualit\u00e9 (diminution du ratio rouge clair\/rouge sombre). Ainsi, des travaux ont montr\u00e9 qu\u2019en pr\u00e9sence d\u2019un couvert, l\u2019\u00e9mergence des adventices a tendance \u00e0 diminuer significativement de 17,1&nbsp;% mais de mani\u00e8re variable entre les esp\u00e8ces adventices.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"669\" height=\"365\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/emergence-adventices.png?resize=669%2C365&#038;ssl=1\" alt=\"\u00e9mergence adventices\" class=\"wp-image-2768\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/emergence-adventices.png?w=669&amp;ssl=1 669w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/emergence-adventices.png?resize=300%2C164&amp;ssl=1 300w\" sizes=\"(max-width: 669px) 100vw, 669px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pr\u00e9dation<\/strong> des adventices par la faune auxiliaire<\/h2>\n\n\n\n<p>La pr\u00e9dation est une interaction qui rel\u00e8ve d\u2019une approche verticale entre niveaux trophiques. La flore adventice est compos\u00e9e essentiellement d\u2019esp\u00e8ces annuelles produisant d\u2019importantes quantit\u00e9s de graines tombant au sol et qui r\u00e9alimentent le stock semencier chaque ann\u00e9e. Ces graines repr\u00e9sentent une ressource alimentaire importante pour de nombreux arthropodes tels que les carabes, petits mammif\u00e8res et oiseaux.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"740\" height=\"367\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/predation-adventices.png?resize=740%2C367&#038;ssl=1\" alt=\"pr\u00e9dation adventices\" class=\"wp-image-2769\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/predation-adventices.png?w=740&amp;ssl=1 740w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/predation-adventices.png?resize=300%2C149&amp;ssl=1 300w\" sizes=\"(max-width: 740px) 100vw, 740px\" \/><\/figure>\n\n\n\n<p>Sur la base d\u2019une dizaine d\u2019\u00e9tudes men\u00e9es en Europe et aux Etas Unis, le taux annuel de pr\u00e9dation est d\u2019environ 40% mais il est tr\u00e8s variable de 8 \u00e0 70&nbsp;% en fonction des esp\u00e8ces adventices et du contexte agronomique.<\/p>\n\n\n\n<p>Des travaux de mod\u00e9lisation sugg\u00e8rent qu\u2019une perte annuelle de 25 \u00e0 50&nbsp;% des graines adventices serait suffisante pour affecter la dynamique des populations et les faire r\u00e9gresser. Dans les r\u00e9gions temp\u00e9r\u00e9es, les carabid\u00e9s sont les principaux invert\u00e9br\u00e9s consommateurs de graines d\u2019adventices. La pr\u00e9sence d\u2019un couvert peut les favoriser en leur fournissant un abri et des ressources. Toutefois, encore peu de travaux d\u00e9montrent que cette r\u00e9gulation est suffisamment intense pour avoir un impact significatif sur le stock semencier et la flore adventice qui va s\u2019exprimer dans les cultures suivantes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Parasitisme<\/strong> des graines d&rsquo;adventices<\/h2>\n\n\n\n<p>La pr\u00e9sence d\u2019un couvert peut induire une augmentation de l\u2019humidit\u00e9 de l\u2019air et une diminution de l\u2019humidit\u00e9 du sol. Il peut aussi tamponner la temp\u00e9rature du sol, en particulier diminuer sa temp\u00e9rature en p\u00e9riode chaude en limitant l\u2019intensit\u00e9 du rayonnement solaire atteignant le sol.<\/p>\n\n\n\n<p>Ces conditions sont a priori favorables aux champignons qui agissent sur les adventices de diff\u00e9rentes mani\u00e8res.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"747\" height=\"348\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/parasitisme-adventices.png?resize=747%2C348&#038;ssl=1\" alt=\"parasitisme adventices\" class=\"wp-image-2770\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/parasitisme-adventices.png?w=747&amp;ssl=1 747w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2023\/09\/parasitisme-adventices.png?resize=300%2C140&amp;ssl=1 300w\" sizes=\"(max-width: 747px) 100vw, 747px\" \/><\/figure>\n\n\n\n<p>Parmi ces champignons, certains sont phytopathog\u00e8nes des semences et\/ou des plantes adventices. Tr\u00e8s peu de donn\u00e9es sont disponibles sur cet aspect. L\u2019accroissement des connaissances sur l\u2019action de champignons phytopathog\u00e8nes sur les adventices pourrait permettre de mieux quantifier les effets de ce m\u00e9canisme et ses d\u00e9terminants, afin de d\u00e9terminer s\u2019il pourrait jouer un r\u00f4le pour favoriser la r\u00e9gulation des adventices sans affecter les cultures de rente.<\/p>\n\n\n<div class=\"_3d-flip-book  fb3d-fullscreen-mode full-size\" data-id=\"2764\" data-mode=\"fullscreen\" data-title=\"false\" data-template=\"short-white-book-view\" data-lightbox=\"dark-shadow\" data-urlparam=\"fb3d-page\" data-page-n=\"0\" data-pdf=\"\" data-tax=\"null\" data-thumbnail=\"\" data-cols=\"3\" data-book-template=\"default\" data-trigger=\"\"><\/div><script type=\"text\/javascript\">window.FB3D_CLIENT_DATA = window.FB3D_CLIENT_DATA || [];FB3D_CLIENT_DATA.push('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');window.FB3D_CLIENT_LOCALE && FB3D_CLIENT_LOCALE.render && FB3D_CLIENT_LOCALE.render();<\/script>\n\n\n\n<p>Pour en savoir plus sur les couverts, vous pouvez consulter notre derni\u00e8re publication sur les choix d&rsquo;esp\u00e8ces et modes d&rsquo;implantation via le lien : <a href=\"https:\/\/normandiemaine.cerfrance.fr\/arad2\/couverts-vegetauxe-et-services-ecosystemiques\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/normandiemaine.cerfrance.fr\/arad2\/couverts-vegetauxe-et-services-ecosystemiques\/<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Source <\/h2>\n\n\n\n<p><em>MOREAU D., et al, 2022. M\u00e9canismes de r\u00e9gulation biologique des adventices par les couverts v\u00e9g\u00e9taux. Revue AE&amp;S 12-1.<\/em><\/p>\n\n\n\n<p><a href=\"https:\/\/doi.org\/10.54800\/tre343\">https:\/\/doi.org\/10.54800\/tre343<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u00e9canismes de r\u00e9gulation des adventices par les couverts v\u00e9g\u00e9taux<\/p>\n","protected":false},"author":5,"featured_media":3053,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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