{"id":2849,"date":"2008-03-23T08:23:14","date_gmt":"2008-03-23T08:23:14","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/2008\/03\/23\/un-essai-amrica\/"},"modified":"2012-07-12T10:31:10","modified_gmt":"2012-07-12T10:31:10","slug":"un-essai-amrica","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2008\/03\/23\/un-essai-amrica\/","title":{"rendered":"Un essai am\u00e9ricain : du switchgrass \u00e0 50$ la tonne"},"content":{"rendered":"<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/switchgrassculture1.gif\"><img loading=\"lazy\" decoding=\"async\" height=\"327\" alt=\"Switchgrassculture\" src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/switchgrassculture.gif\" width=\"250\"  \/><\/a>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;Le switchgrass est un des mat\u00e9riaux cellulosiques pr\u00e9conis\u00e9s pour alimenter une future fili\u00e8re de bio \u00e9thanol de deuxi\u00e8me g\u00e9n\u00e9ration. En effet cette plante ne n\u00e9cessite pas de sols tr\u00e8s riches, elle est robuste et peut \u00eatre r\u00e9colt\u00e9e six fois par an. Une \u00e9tude en vraie grandeur conduite depuis 2000, par le Minist\u00e8re de l&rsquo;Agriculture des USA et ses homologues de Nebraska, conduite sur dix exploitations agricoles du Nebraska, du Sud et du Nord Dakota, vient de montrer qu&rsquo;il est possible de produire du switchgrass avec des rendements pouvant atteindre entre 6 \u00e0 8 tonnes \u00e0 l&rsquo;hectare sur une production moyenne sur 10 ans. Une \u00e9tude analytique des co\u00fbts d&rsquo;exploitation comprenant les divers postes de frais (semences, engrais, r\u00e9colte, location de mat\u00e9riel, location du sol, main d&rsquo;oeuvre) conclut que le prix de revient de ces r\u00e9coltes est de <u>50$ \u00e0 55$ la tonne<\/u> \u00e0 la sortie de la ferme. Dans une production d&rsquo;\u00e9thanol qui conduirait \u00e0 260 litres d&rsquo;\u00e9thanol par tonne le poste switchgrass serait donc de <u>0.19$ \u00e0 0.21$ par litre d&rsquo;alcool.<\/u><\/p>\n<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/switchgrassharvest_21.gif\"><img loading=\"lazy\" decoding=\"async\" height=\"149\" alt=\"Switchgrassharvest_2\" src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/switchgrassharvest_2.gif\" width=\"250\"  \/><\/a>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; Cette \u00e9tude r\u00e9alis\u00e9e dans des conditions r\u00e9elles sur 10 sites pr\u00e9cise les donn\u00e9es d&rsquo;exploitation de cette herbe avec la croissance des productions au cours des premi\u00e8res ann\u00e9es de croissance de la plante (Fig.) et en fonction des conditions climatiques r\u00e9elles responsables des baisses de production durant la cinqui\u00e8me ann\u00e9e.<\/p>\n<p>Lire cette tr\u00e8s <a href=\"http:\/\/www.springerlink.com\/content\/f85977006m871205\/fulltext.pdf\">int\u00e9ressante \u00e9tude<\/a>. (En anglais)<a href=\"http:\/\/clabedan.typepad.com\/photos\/uncategorized\/2008\/03\/22\/switchgrassharvest.gif\"><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;Le switchgrass est un des mat\u00e9riaux cellulosiques pr\u00e9conis\u00e9s pour alimenter une future fili\u00e8re de bio \u00e9thanol de deuxi\u00e8me g\u00e9n\u00e9ration. En effet cette plante ne n\u00e9cessite pas de sols tr\u00e8s riches, elle est robuste et peut \u00eatre r\u00e9colt\u00e9e six fois par an. Une \u00e9tude en vraie grandeur [&hellip;]<\/p>\n","protected":false},"author":341,"featured_media":8241,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2849","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bio-carburants"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Un essai am\u00e9ricain : du switchgrass \u00e0 50$ la tonne - leblogenergie.com<\/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:\/\/blogs.thesocialmedia.com\/leblogenergie\/2008\/03\/23\/un-essai-amrica\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Un essai am\u00e9ricain : du switchgrass \u00e0 50$ la tonne - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;Le switchgrass est un des mat\u00e9riaux cellulosiques pr\u00e9conis\u00e9s pour alimenter une future fili\u00e8re de bio \u00e9thanol de deuxi\u00e8me g\u00e9n\u00e9ration. 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