{"id":854,"date":"2018-09-05T18:14:39","date_gmt":"2018-09-05T16:14:39","guid":{"rendered":"http:\/\/cliniquedugazon.fr\/?p=854"},"modified":"2021-03-19T06:58:56","modified_gmt":"2021-03-19T05:58:56","slug":"quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps","status":"publish","type":"post","link":"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/","title":{"rendered":"Quelle vari\u00e9t\u00e9 d&rsquo;agrostide pour green lors de l&rsquo;a\u00e9ration de printemps?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-69f0add30acdf\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69f0add30acdf\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/#Methodologie\" >M\u00e9thodologie<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/#Resultats_des_essais_a_basse_temperature\" >R\u00e9sultats des essais \u00e0 basse temp\u00e9rature<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/#Lavis_et_les_recommandations_de_la_clinique_du_gazon\" >L\u2019avis et les recommandations de la clinique du gazon<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/#Bibliographie\" >Bibliographie<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div class=\"avisclinique\">\n<div class=\"td_text_columns_two_cols\">\n<p>Alors que les plannings de comp\u00e9titions sont toujours plus remplis, il devient difficile pour le greenkeeper de r\u00e9aliser l&rsquo;a\u00e9ration de printemps dans les conditions optimales de temp\u00e9ratures. Il n&rsquo;est pas rare d\u00e9sormais de voir des a\u00e9rations d\u00e9but Mars pour g\u00eaner le jeu au minimum.<\/p>\n<p>A\u00e9rer en conditions froides, c&rsquo;est d&rsquo;abord des greens qui se \u00ab\u00a0referment\u00a0\u00bb plus lentement. Mais c&rsquo;est \u00e9galement des regarnissages avec des r\u00e9sultats peu satisfaisants. En effet, l&rsquo;agrostide germe et s&rsquo;installe bien lorsque la temp\u00e9rature d\u00e9passe les 20\u00b0C mais c&rsquo;est beaucoup moins s\u00fbr lorsque la temp\u00e9rature descend en-dessous de 15\u00b0C.<\/p>\n<p>Quand un regarnissage \u00e0 3g\/m\u00b2 revient \u00e0 1800\u20ac H.T. en moyenne pour 18 trous en comptant simplement le prix des semences, le greenkeeper est en droit de se demander quelles vari\u00e9t\u00e9s sont susceptibles de s&rsquo;implanter le mieux \u00e0 cette p\u00e9riode de l&rsquo;ann\u00e9e. Cet article tente d&rsquo;apporter quelques \u00e9l\u00e9ments de r\u00e9ponses pour aider au mieux l&rsquo;intendant.<\/p>\n<p><a href=\"https:\/\/plantscience.psu.edu\/directory\/jek156\">John Kaminsky<\/a> est un chercheur reconnu dans les sciences du gazon \u00e0 l&rsquo;universit\u00e9 de Penn State. Avec une \u00e9tudiante en master : <a href=\"https:\/\/twitter.com\/turfgirl24\">Devon Carroll<\/a>, le chercheur a tent\u00e9 de d\u00e9terminer les capacit\u00e9s de germination de diff\u00e9rents cultivars d&rsquo;agrostides (stolonif\u00e8res et canina) sous diff\u00e9rentes temp\u00e9ratures (10, 15, 20 et 25\u00b0C)<sup>1<\/sup>.<\/p>\n<p>Jusqu&rsquo;alors, tr\u00e8s peu d&rsquo;\u00e9tudes se sont pench\u00e9es sur cet aspect. Les r\u00e9sultats sont d&rsquo;un grand int\u00e9r\u00eat potentiel pour l&rsquo;intendant qui peut alors choisir de mani\u00e8re objective la bonne vari\u00e9t\u00e9 pour son a\u00e9ration de printemps sans risquer de perdre les graines sem\u00e9es.<\/p>\n<\/div>\n<p><a href=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/penn-state-college-logo.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-649 size-full\" title=\"Logo PennState University\" src=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/penn-state-college-logo.png\" alt=\"Logo PennState University\" width=\"400\" height=\"75\" srcset=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/penn-state-college-logo.png 400w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/penn-state-college-logo-300x56.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><\/p>\n<\/div>\n<figure id=\"attachment_877\" aria-describedby=\"caption-attachment-877\" style=\"width: 850px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/regarnissage-greens-1024\/\"><img loading=\"lazy\" decoding=\"async\" class=\" td-modal-image wp-image-877\" title=\"Regarnissage r\u00e9ussi sur green de golf\" src=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/regarnissage-greens-1024.jpg\" alt=\"Regarnissage r\u00e9ussi sur green de golf\" width=\"850\" height=\"477\" srcset=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/regarnissage-greens-1024.jpg 1024w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/regarnissage-greens-1024-300x168.jpg 300w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/regarnissage-greens-1024-768x431.jpg 768w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/regarnissage-greens-1024-696x391.jpg 696w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/regarnissage-greens-1024-748x420.jpg 748w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/a><figcaption id=\"caption-attachment-877\" class=\"wp-caption-text\">Un regarnissage r\u00e9ussi sur green de golf, les sillons de jeunes plantules sont largement visibles. <strong>Licence :<\/strong> \u00ab\u00a0<a href=\"https:\/\/www.externalworksindex.co.uk\/entry\/47790\/Johnsons-Sports-Seeds\/J-All-Bent-grass-seed-for-golf-greens-overseeding\/\">J All Bent grass seed for golf greens (overseeding)<\/a>\u00a0\u00bb par <a href=\"https:\/\/www.johnsonssportsseed.co.uk\/?\">Johnsons sports seeds<\/a> <a href=\"https:\/\/www.tous-droits-reserves.com\/mention-tous-droits-reserves.html\">tous droits r\u00e9serv\u00e9s<\/a><\/figcaption><\/figure>\n<h1><span class=\"ez-toc-section\" id=\"Methodologie\"><\/span>M\u00e9thodologie<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>Le principe est simple : il consiste \u00e0 tester le pourcentage de germination de 18 cultivars d&rsquo;agrostides (dont 2 agrostides des chiens) \u00e0 diff\u00e9rents paliers de temp\u00e9ratures : 10\u00b0C, 15\u00b0C, 20\u00b0C et 25\u00b0C. Les cultivars choisis comprennent des t\u00e9moins largement r\u00e9pandu dans les golfs (<em>Penncross, Penn A1, Penn A4<\/em>) mais la plupart sont des vari\u00e9t\u00e9s connues pour leur qualit\u00e9 dans les essais nationaux (<a href=\"http:\/\/www.ntep.org\/\"><em>NTEP<\/em><\/a>).<\/p>\n<p>60 graines par vari\u00e9t\u00e9 sont d\u00e9pos\u00e9es dans des bo\u00eetes de P\u00e9tri contenant un m\u00e9lange d&rsquo;agar et d&rsquo;eau afin de permettre des conditions de germinations optimales (voir figure 1). Les graines sont ensuite laiss\u00e9es dans un incubateur aux diff\u00e9rentes temp\u00e9ratures cit\u00e9es pr\u00e9c\u00e9demment. Les graines qui germent sont compt\u00e9es au fur et \u00e0 mesure pour chaque vari\u00e9t\u00e9 et chaque temp\u00e9rature.<\/p>\n<figure id=\"attachment_884\" aria-describedby=\"caption-attachment-884\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/germ-petri\/\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-884\" src=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/germ-petri.jpg\" alt=\"Germination des agrostides en boite de P\u00e9tri \u00e0 basse temp\u00e9rature\" width=\"650\" height=\"364\" srcset=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/germ-petri.jpg 1372w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/germ-petri-300x168.jpg 300w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/germ-petri-768x430.jpg 768w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/germ-petri-1024x573.jpg 1024w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/germ-petri-696x390.jpg 696w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/germ-petri-1068x598.jpg 1068w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/germ-petri-750x420.jpg 750w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/a><figcaption id=\"caption-attachment-884\" class=\"wp-caption-text\">Figure 1 : Germination des graines d&rsquo;agrostide en bo\u00eete de P\u00e9tri sur milieu agar et eau.\u00a0Source : (<a href=\"https:\/\/fr.slideshare.net\/johnkaminski\/influence-of-temperature-on-germination-of-various-agrostis-cultivars\">Kaminski et Caroll, 2017<\/a>). <strong>Licence :<\/strong> \u00ab\u00a0<span class=\"j-title-breadcrumb\"><a href=\"https:\/\/fr.slideshare.net\/johnkaminski\/influence-of-temperature-on-germination-of-various-agrostis-cultivars\">Influence of Temperature on Germination of Various Agrostis Cultivars<\/a>\u00a0\u00bb par <a href=\"https:\/\/fr.slideshare.net\/\">SlideShare<\/a> <a href=\"https:\/\/www.tous-droits-reserves.com\/mention-tous-droits-reserves.html\">tous droits r\u00e9serv\u00e9s<\/a><\/span><\/figcaption><\/figure>\n<h1><span class=\"ez-toc-section\" id=\"Resultats_des_essais_a_basse_temperature\"><\/span>R\u00e9sultats des essais \u00e0 basse temp\u00e9rature<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>A 10\u00b0C, toutes les vari\u00e9t\u00e9s atteignent environ leur germination maximale au bout de 11-12 jours sauf pour la vari\u00e9t\u00e9 <em>Penn A4<\/em> qui atteint son pallier au bout de 15-16 jours (voir figure 2).<\/p>\n<figure id=\"attachment_863\" aria-describedby=\"caption-attachment-863\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/kaminski-pallier-10deg\/\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-863\" src=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-pallier-10deg.png\" alt=\"Taux de germination de diff\u00e9rents cultivars \u00e0 10\u00b0C en fonction du temps (jours)\" width=\"700\" height=\"304\" srcset=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-pallier-10deg.png 1276w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-pallier-10deg-300x130.png 300w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-pallier-10deg-768x333.png 768w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-pallier-10deg-1024x445.png 1024w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-pallier-10deg-696x302.png 696w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-pallier-10deg-1068x464.png 1068w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-pallier-10deg-967x420.png 967w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><figcaption id=\"caption-attachment-863\" class=\"wp-caption-text\">Figure 2 : Taux de germination de diff\u00e9rents cultivars \u00e0 10\u00b0C en fonction du temps (jours). Un pallier avec un taux de germination maximal qui n&rsquo;\u00e9voluera plus est visible pour 11-12 jours chez la majorit\u00e9 des cultivars.\u00a0Source : (<a href=\"https:\/\/fr.slideshare.net\/johnkaminski\/influence-of-temperature-on-germination-of-various-agrostis-cultivars\">Kaminski et Caroll, 2017<\/a>).\u00a0<strong>Licence :<\/strong> \u00ab\u00a0<span class=\"j-title-breadcrumb\"><a href=\"https:\/\/fr.slideshare.net\/johnkaminski\/influence-of-temperature-on-germination-of-various-agrostis-cultivars\">Influence of Temperature on Germination of Various Agrostis Cultivars<\/a>\u00a0\u00bb par <a href=\"https:\/\/fr.slideshare.net\/\">SlideShare<\/a> <a href=\"https:\/\/www.tous-droits-reserves.com\/mention-tous-droits-reserves.html\">tous droits r\u00e9serv\u00e9s<\/a><\/span><\/figcaption><\/figure>\n<p>Les donn\u00e9es ne sont malheureusement pas exploitables pour une des vari\u00e9t\u00e9s d&rsquo;agrostides envahie par un champignon d&rsquo;o\u00f9 un taux de germination tr\u00e8s faible : <em>Villa 1<\/em>.<\/p>\n<p>La figure 3 montre les taux germination de l&rsquo;ensemble des vari\u00e9t\u00e9s pour une temp\u00e9rature de 10\u00b0C.<\/p>\n<figure id=\"attachment_861\" aria-describedby=\"caption-attachment-861\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/kaminski-10deg\/\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-861\" src=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-10deg.png\" alt=\"Taux de germination de diff\u00e9rents cultivars d'agrostides pour une temp\u00e9rature de 10\u00b0C. \" width=\"700\" height=\"434\" srcset=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-10deg.png 974w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-10deg-300x186.png 300w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-10deg-768x476.png 768w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-10deg-356x220.png 356w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-10deg-696x432.png 696w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-10deg-677x420.png 677w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><figcaption id=\"caption-attachment-861\" class=\"wp-caption-text\">Figure 3 : taux de germination de diff\u00e9rents cultivars d&rsquo;agrostides pour une temp\u00e9rature de 10\u00b0C. En Violet : les vari\u00e9t\u00e9s t\u00e9moins. En Vert : les agrostides des chiens. En bleu : les autres agrostides stolonif\u00e8res. Les bo\u00eete de P\u00e9tri ont \u00e9t\u00e9 envahie par un champignon pour la vari\u00e9t\u00e9 Villa 1 d&rsquo;o\u00f9 les r\u00e9sultats faibles. Source : (<a href=\"https:\/\/fr.slideshare.net\/johnkaminski\/influence-of-temperature-on-germination-of-various-agrostis-cultivars\">Kaminski et Caroll, 2017<\/a>).<\/figcaption><\/figure>\n<p>La figure 4 montre les m\u00eames r\u00e9sultats pour une temp\u00e9rature de 15\u00b0C.<\/p>\n<figure id=\"attachment_864\" aria-describedby=\"caption-attachment-864\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/kaminski-15-deg\/\"><img loading=\"lazy\" decoding=\"async\" class=\" td-modal-image wp-image-864\" src=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-15-deg.png\" alt=\"Taux de germination de diff\u00e9rents cultivars d'agrostides pour une temp\u00e9rature de 15\u00b0C\" width=\"700\" height=\"435\" srcset=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-15-deg.png 973w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-15-deg-300x187.png 300w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-15-deg-768x478.png 768w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-15-deg-356x220.png 356w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-15-deg-696x433.png 696w, https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2018\/09\/kaminski-15-deg-675x420.png 675w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><figcaption id=\"caption-attachment-864\" class=\"wp-caption-text\">Figure 4 :\u00a0taux de germination de diff\u00e9rents cultivars d&rsquo;agrostides pour une temp\u00e9rature de 15\u00b0C. En Violet : les vari\u00e9t\u00e9s t\u00e9moins. En Vert : les agrostides des chiens. En bleu : les autres agrostides stolonif\u00e8res.\u00a0Source : (<a href=\"https:\/\/fr.slideshare.net\/johnkaminski\/influence-of-temperature-on-germination-of-various-agrostis-cultivars\">Kaminski et Caroll, 2017<\/a>).<\/figcaption><\/figure>\n<p>Il existe des diff\u00e9rences significatives dans la capacit\u00e9 des diff\u00e9rents cultivars \u00e0 germer \u00e0 basse temp\u00e9rature (10\u00b0C et 15\u00b0C).<\/p>\n<ul class=\"td-arrow-list\">\n<li>A 10\u00b0C, certains cultivars peuvent germer jusqu&rsquo;\u00e0 plus de 70% (<em>Pure Select<\/em>, <em>Penn A4<\/em>) alors que d&rsquo;autres ne d\u00e9passent pas 25% (<em>T1, Mackenzie, Tyee, Focus, Penncross, Alpha, Ignite<\/em>).<\/li>\n<li>A 15\u00b0C, les taux de germination augmentent largement et le taux de germination de la moiti\u00e9 des cultivars d\u00e9passe 70%. Les vari\u00e9t\u00e9s <em>T1, Mackenzie, Focus<\/em> restent en-dessous de 65%.<\/li>\n<\/ul>\n<p>Il est ainsi possible au greenkeeper de choisir parmi les vari\u00e9t\u00e9s dont le taux de germination est \u00e9lev\u00e9 pour 10\u00b0C afin de maximiser la r\u00e9ussite de son regarnissage lors des a\u00e9rations de printemps.<\/p>\n<p>Toutes ces vari\u00e9t\u00e9s ne sont malheureusement pas disponibles en France. Les r\u00e9sultats obtenus \u00e0 10\u00b0C en ne gardant que les vari\u00e9t\u00e9s inscrites en Europe et par cons\u00e9quent potentiellement disponibles en France sont visibles sur la figure 5.<\/p>\n<figure id=\"attachment_866\" aria-describedby=\"caption-attachment-866\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cliniquedugazon.fr\/kaminski-10degres-fr\/\"><img loading=\"lazy\" decoding=\"async\" class=\" td-modal-image wp-image-866\" src=\"https:\/\/cliniquedugazon.fr\/wp-content\/uploads\/2019\/03\/kaminski-10degres-fr.png\" alt=\"Taux de germination des vari\u00e9t\u00e9s d'agrostides disponibles sur le march\u00e9 fran\u00e7ais pour une temp\u00e9rature de 10\u00b0C.\" width=\"700\" height=\"434\" \/><\/a><figcaption id=\"caption-attachment-866\" class=\"wp-caption-text\">Figure 5 : Taux de germination des vari\u00e9t\u00e9s d&rsquo;agrostides disponibles sur le march\u00e9 fran\u00e7ais pour une temp\u00e9rature de 10\u00b0C.\u00a0Source : (<a href=\"https:\/\/fr.slideshare.net\/johnkaminski\/influence-of-temperature-on-germination-of-various-agrostis-cultivars\">Kaminski et Caroll, 2017<\/a>).<\/figcaption><\/figure>\n<p>Enfin, le potentiel d&rsquo;installation \u00e0 basse temp\u00e9rature est une chose mais il ne faut pas oublier les nombreux autres crit\u00e8res de s\u00e9lection pour implanter la vari\u00e9t\u00e9 la plus performante et la mieux adapt\u00e9e possible. Ainsi, les recommandations suivantes peuvent \u00eatre faites pour choisir une vari\u00e9t\u00e9 aux excellentes performances capable de s&rsquo;installer le mieux possible dans les conditions froides des a\u00e9rations de printemps.<\/p>\n<div class=\"avisclinique\">\n<h1><span class=\"ez-toc-section\" id=\"Lavis_et_les_recommandations_de_la_clinique_du_gazon\"><\/span><i class=\"wp-svg-leaf leaf\"><\/i>L\u2019avis et les recommandations de la clinique du gazon<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>Il conviendra au greenkeeper de choisir le compromis au printemps entre les qualit\u00e9s de germination \u00e0 basse temp\u00e9rature et les performances g\u00e9n\u00e9rales de la vari\u00e9t\u00e9 dans les diff\u00e9rents essais nationaux. Le tableau ci-dessous synth\u00e9tise l&rsquo;ensemble des vari\u00e9t\u00e9s d&rsquo;agrostides disponibles en France dont les capacit\u00e9s de germination \u00e0 basse temp\u00e9rature ont \u00e9t\u00e9 \u00e9valu\u00e9es dans l&rsquo;\u00e9tude de\u00a0<a href=\"https:\/\/plantscience.psu.edu\/directory\/jek156\">John Kaminsky<\/a>\u00a0et <a href=\"https:\/\/plantscience.psu.edu\/directory\/dec5297\">Devon Caroll<\/a>. Les performances g\u00e9n\u00e9rales de chaque vari\u00e9t\u00e9 en fonction des r\u00e9sultats dans divers essais \u00e0 travers le monde sont \u00e9galement annot\u00e9es.<\/p>\n<div class=\"alertbox\"><strong>REMARQUE 1 :<\/strong> Certains cultivars n&rsquo;apparaissent pas dans le tableau, ils n&rsquo;ont simplement pas \u00e9t\u00e9 test\u00e9s pour leur germination \u00e0 basse temp\u00e9rature. Leur performance sur ce crit\u00e8re est peut \u00eatre excellent mais personne ne l&rsquo;a v\u00e9rifi\u00e9.<\/div>\n<div class=\"alertbox\"><strong>REMARQUE 2 :<\/strong> <a href=\"https:\/\/plantscience.psu.edu\/directory\/dec5297\">Devon Caroll<\/a>\u00a0rendra son m\u00e9moire officiellement en 2019 dans lequel l&rsquo;\u00e9tude a largement \u00e9t\u00e9 approfondie. Des cycles de lumi\u00e8res vari\u00e9s ainsi qu&rsquo;un passage au champ permettra d&rsquo;\u00e9tayer les r\u00e9sultats. Ils seront bien entendu mis \u00e0 jour et disponibles sur ce site.<\/div>\n<table class=\"table-fill\">\n<tbody>\n<tr>\n<th class=\"text-left\">Vari\u00e9t\u00e9<\/th>\n<th class=\"text-left\">Esp\u00e8ce<\/th>\n<th class=\"text-left\">Germination \u00e0 10\u00b0C<\/th>\n<th class=\"text-left\">Germination \u00e0 15\u00b0C<\/th>\n<th class=\"text-left\">Performances g\u00e9n\u00e9rales<\/th>\n<th class=\"text-left\">Distributeur<\/th>\n<\/tr>\n<tr>\n<td>Pure Select<\/td>\n<td>Stolo.<\/td>\n<td>Excellente<\/td>\n<td>Excellente<\/td>\n<td><div class=\"skillbar\" data-percent=\"95%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>Divers<\/td>\n<\/tr>\n<tr>\n<td>Penn A4<\/td>\n<td>Stolo.<\/td>\n<td>Excellente<\/td>\n<td>Excellente<\/td>\n<td><div class=\"skillbar\" data-percent=\"50%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>Divers<\/td>\n<\/tr>\n<tr>\n<td>OO7<\/td>\n<td>Stolo.<\/td>\n<td>Bonne<\/td>\n<td>Excellente<\/td>\n<td><div class=\"skillbar\" data-percent=\"75%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>Divers<\/td>\n<\/tr>\n<tr>\n<td>Pure Distinction<\/td>\n<td>Stolo.<\/td>\n<td>Bonne<\/td>\n<td>Excellente<\/td>\n<td><div class=\"skillbar\" data-percent=\"95%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>?<\/td>\n<\/tr>\n<tr>\n<td>Vesper<\/td>\n<td>Canina<\/td>\n<td>Moyenne<\/td>\n<td>Bonne<\/td>\n<td><div class=\"skillbar\" data-percent=\"60%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>?<\/td>\n<\/tr>\n<tr>\n<td>Penn A1<\/td>\n<td>Stolo.<\/td>\n<td>Moyenne<\/td>\n<td>Excellente<\/td>\n<td><div class=\"skillbar\" data-percent=\"50%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>Divers<\/td>\n<\/tr>\n<tr>\n<td>Ignite<\/td>\n<td>Stolo.<\/td>\n<td>Moyenne<\/td>\n<td>Bonne<\/td>\n<td><div class=\"skillbar\" data-percent=\"95%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>Teamgreen<\/td>\n<\/tr>\n<tr>\n<td>Penncross<\/td>\n<td>Stolo.<\/td>\n<td>Moyenne<\/td>\n<td>Excellente<\/td>\n<td><div class=\"skillbar\" data-percent=\"25%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>Divers<\/td>\n<\/tr>\n<tr>\n<td>Tyee<\/td>\n<td>Stolo.<\/td>\n<td>Faible<\/td>\n<td>Bonne<\/td>\n<td><div class=\"skillbar\" data-percent=\"70%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>?<\/td>\n<\/tr>\n<tr>\n<td>Mackenzie<\/td>\n<td>Stolo.<\/td>\n<td>Faible<\/td>\n<td>Bonne<\/td>\n<td><div class=\"skillbar\" data-percent=\"60%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>?<\/td>\n<\/tr>\n<tr>\n<td>T1<\/td>\n<td>Stolo.<\/td>\n<td>Faible<\/td>\n<td>Moyenne<\/td>\n<td><div class=\"skillbar\" data-percent=\"50%\"><div class=\"skillbar-bar\" style=\"background: #0b8e36;\"><\/div><\/div><\/td>\n<td>Fito<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"biblio\">\n<h1><span class=\"ez-toc-section\" id=\"Bibliographie\"><\/span><i class=\"wp-svg-book book\"><\/i>Bibliographie<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<ol>\n<li><strong>Kaminski, J.E., Caroll, D. (2017).<\/strong>\u00a0Influence of temperature on germination of various agrostis cultivars <em>Penn State University Pr\u00e9sentation,<\/em>26p.\u00a0<a href=\"https:\/\/fr.slideshare.net\/johnkaminski\/influence-of-temperature-on-germination-of-various-agrostis-cultivars\">https:\/\/fr.slideshare.net\/johnkaminski\/influence-of-temperature-on-germination-of-various-agrostis-cultivars<\/a><\/li>\n<\/ol>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Introduction Alors que les plannings de comp\u00e9titions sont toujours plus remplis, il devient difficile pour le greenkeeper de r\u00e9aliser l&rsquo;a\u00e9ration de printemps dans les conditions optimales de temp\u00e9ratures. Il n&rsquo;est pas rare d\u00e9sormais de voir des a\u00e9rations d\u00e9but Mars pour g\u00eaner le jeu au minimum. A\u00e9rer en conditions froides, c&rsquo;est d&rsquo;abord des greens qui se [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":859,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[2,11],"tags":[],"class_list":{"0":"post-854","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-alaune","8":"category-semences"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Quelle vari\u00e9t\u00e9 d&#039;agrostide pour green lors de l&#039;a\u00e9ration de printemps? - Clinique du Gazon<\/title>\n<meta name=\"description\" content=\"Guide des vari\u00e9t\u00e9s d&#039;agrostides stolonif\u00e8res pour greens lors des regarnissages effectu\u00e9s pendant une a\u00e9ration de printemps pr\u00e9coce.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cliniquedugazon.fr\/index.php\/2018\/09\/05\/quelle-variete-dagrostide-pour-green-pour-laeration-de-printemps\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quelle vari\u00e9t\u00e9 d&#039;agrostide pour green lors de l&#039;a\u00e9ration de printemps? 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