{"id":13883,"date":"2022-03-10T09:29:44","date_gmt":"2022-03-10T08:29:44","guid":{"rendered":"https:\/\/evajura.com\/dossiers\/meteo-de-lherbe-du-21-octobre-2021-copy\/"},"modified":"2022-03-10T09:46:23","modified_gmt":"2022-03-10T08:46:23","slug":"meteo-de-lherbe-du-8-mars-2022","status":"publish","type":"dossiers","link":"https:\/\/evajura.com\/en\/dossiers\/meteo-de-lherbe-du-8-mars-2022\/","title":{"rendered":"M\u00e9t\u00e9o de l’herbe du 8 Mars"},"content":{"rendered":"

La pousse de l’herbe est encore tr\u00e8s timide m\u00eame en plaine avec des temp\u00e9ratures fraiches la nuit et des gel\u00e9s marqu\u00e9es sur les plateaux.<\/span><\/h2>\n

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Rep\u00e8res conduite du troupeau : du 28 F\u00e9vrier au 7 Mars 2022<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
\u00a0<\/strong><\/td>\n39 Foin<\/strong><\/td>\n39 Ensilage<\/strong><\/td>\n25-90 Foin<\/strong><\/td>\n25-90 Ensilage<\/strong><\/td>\n70 Foin \/ Enrubannage<\/strong><\/td>\n70 Ensilage<\/strong><\/td>\n<\/tr>\n
Lait moyen \/ vache traite (kg)<\/strong><\/td>\n22,6<\/td>\n24,5<\/td>\n24,0<\/td>\n27,9<\/td>\nNC<\/td>\nNC<\/td>\n<\/tr>\n
TB Moyen (g\/kg)<\/strong><\/td>\n37,2<\/td>\n41,9<\/td>\n37,7<\/td>\n39,3<\/td>\nNC<\/td>\nNC<\/td>\n<\/tr>\n
TP Moyen (g\/kg)<\/strong><\/td>\n32,3<\/td>\n34,1<\/td>\n32,7<\/td>\n32,8<\/td>\nNC<\/td>\nNC<\/td>\n<\/tr>\n
Valorisation ration de base (kg)<\/strong><\/td>\n9,2<\/td>\n14,3<\/td>\n11,2<\/td>\n14,3<\/td>\nNC<\/td>\nNC<\/td>\n<\/tr>\n
Co\u00fbt HFPE (\u20ac \/ 1000 kg lait)<\/strong><\/td>\n92,2<\/td>\n74,2<\/td>\n88,5<\/td>\n102,0<\/td>\nNC<\/td>\nNC<\/td>\n<\/tr>\n
g de concentr\u00e9s \/ kg de lait<\/strong><\/td>\n267<\/td>\n220<\/td>\n243<\/td>\n230<\/td>\nNC<\/td>\nNC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mesure d’herbe : explications !
\n<\/span><\/strong><\/p>\n

Les donn\u00e9es chiffr\u00e9es figurant sur la carte de la m\u00e9t\u00e9o de l\u2019herbe sont exprim\u00e9es en kg de MS\/ha\/jour. Ces mesures sont r\u00e9alis\u00e9es chaque d\u00e9but de semaine sur des exploitations de plaine, plateau et montagne (> 800m) selon leur type de sol (superficiel ou profond).<\/p>\n

Ces croissances traduisent des \u00e9carts de mesure de hauteurs d\u2019herbe d\u2019une semaine \u00e0 l\u2019autre fournies par l\u2019herbom\u00e8tre. En multipliant ces hauteurs par une densit\u00e9 de l\u2019herbe au p\u00e2turage (en moyenne 250 kg de MS\/cm avec des \u00e9carts de 190 \u00e0 270 kg selon la saison et le type de prairie), on d\u00e9termine la croissance journali\u00e8re.<\/p>\n

Exemple\u00a0: mesure semaine en cours = 10 cm \u2013 mesure semaine pr\u00e9c\u00e9dente (7.5 cm) = 2.5 cm x 250 kg MS\/cm = 625 kg MS\/7 jours = 89 kg de croissance MS\/ha\/jour.<\/p>\n

Un cumul des mesures herbes sur les parcelles p\u00e2tur\u00e9es permet de conna\u00eetre un stock d\u2019herbe disponible \u00e0 un moment donn\u00e9 pour d\u00e9terminer le nombre de jours d\u2019avance au p\u00e2turage afin de prendre les bonnes d\u00e9cisions (ex\u00a0: d\u00e9brayage de parcelle en fauche si n\u00e9cessaire).<\/p>\n

Les croissances moyennes potentielles mesur\u00e9es de 2008 \u00e0 2021 servent aussi \u00e0 d\u00e9finir des surfaces \u00e0 allouer au p\u00e2turage selon la p\u00e9riode (cf. tableau)<\/p>\n

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 <\/p>\n\n\n\n\n\n\n\n
P\u00e9riode<\/strong><\/td>\nPotentiel moyen de croissance
\nde l\u2019herbe (kg MS\/ha\/jour)<\/strong><\/td>\n		Quantit\u00e9 de MS d\u2019herbe offerte\/VL\/jour<\/strong><\/td>\nSurface de p\u00e2turage n\u00e9cessaire par VL<\/strong><\/td>\nExemple pour un troupeau
\n<\/strong> de 50 VL\u00a0 <\/strong><\/td>\n<\/tr>\n
Avril<\/strong><\/td>\n45<\/strong><\/td>\n17 kg offerts pour 16 Kg MS ing\u00e9r\u00e9e<\/td>\n16\/45 = 35 ares<\/strong><\/td>\n17.5 ha<\/strong><\/td>\n<\/tr>\n
Mai<\/strong><\/td>\n50<\/td>\n16\/50 = 32 ares<\/strong><\/td>\n16 ha<\/td>\n<\/tr>\n
Juin<\/strong><\/td>\n43<\/td>\n16\/43 = 37 ares<\/strong><\/td>\n18.5 ha<\/td>\n<\/tr>\n
Juillet<\/strong><\/td>\n30<\/td>\n16\/30 = 53 ares<\/strong><\/td>\n26.5 ha<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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Avec ces rep\u00e8res, c\u2019est avant tout \u00ab\u00a0l\u2019art du p\u00e2turage\u00a0\u00bb\u00a0 que l\u2019\u00e9leveur devra exercer avec beaucoup d\u2019observations et d\u2019ajustements au fil des saisons et des conditions m\u00e9t\u00e9o. Au final\u00a0: des b\u00e9n\u00e9fices av\u00e9r\u00e9s d\u2019une valorisation optimale de l\u2019herbe au stade feuillu pour une production maximale de lait autonome et \u00e9conome !<\/p>\n

Merci aux conseillers qui assurent ces suivis hebdomadaires et qui restent \u00e0 votre disposition pour vous accompagner.<\/span><\/h3>\n

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Radio Prairies<\/em><\/strong> –\u00a0<\/em>Votre rendez-vous “herb’domadaire” : Rendez-vous chaque mardi sur la cha\u00eene YouTube du Groupe Herbe Franche-Comt\u00e9\u00a0\ud83d\ude41<\/em>https:\/\/www.youtube.com\/channel\/UCDU8brAMmEMYv7X0dQ9Lx9g<\/em><\/a><\/span>)<\/span> <\/em><\/p>\n

Retrouvez chaque semaine des interviews d’experts, de techniciens et d’agriculteurs sur le th\u00e8me de la prairie (p\u00e2turage, entretien, r\u00e9colte, t\u00e9moignages, adaptation au changement climatique,\u2026).<\/p>\n

Cette semaine, Fr\u00e9d\u00e9ric Morcet nous pr\u00e9sente l’exploitation du lyc\u00e9e de Montmorot o\u00f9 se tiendra la journ\u00e9e de l’herbe le 17 mars prochain !<\/p>\n

Vous pouvez \u00e9galement acc\u00e9der au podcast en scannant ce QR Code :<\/p>\n

N’h\u00e9sitez pas \u00e0 vous abonner !<\/p>\n

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R\u00e9alis\u00e9 avec le soutien financier de\u00a0:<\/p>\n\"\" \"\"\n","protected":false},"author":4,"featured_media":13889,"comment_status":"open","ping_status":"closed","template":"","categories":[97],"tags":[28,54],"class_list":["post-13883","dossiers","type-dossiers","status-publish","has-post-thumbnail","hentry","category-meteo-de-lherbe","tag-evajura","tag-meteo-de-lherbe"],"acf":[],"yoast_head":"\nM\u00e9t\u00e9o de l'herbe du 8 Mars - Eva Jura<\/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:\/\/evajura.com\/es\/dossiers\/meteo-de-lherbe-du-8-mars-2022\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M\u00e9t\u00e9o de l'herbe du 8 Mars - Eva Jura\" \/>\n<meta property=\"og:description\" content=\"La pousse de l’herbe est encore tr\u00e8s timide m\u00eame en plaine avec des temp\u00e9ratures fraiches la nuit et des gel\u00e9s marqu\u00e9es sur les plateaux.       Rep\u00e8res conduite du troupeau : du 28 F\u00e9vrier au 7 Mars 2022 \u00a0 39 Foin 39 Ensilage 25-90 Foin 25-90 Ensilage 70 Foin \/ Enrubannage 70 Ensilage Lait... 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