{"id":1513,"date":"2005-03-23T07:45:00","date_gmt":"2005-03-23T07:45:00","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogjardin\/2005\/03\/23\/a-propos-des-en-2\/"},"modified":"2012-08-27T09:41:47","modified_gmt":"2012-08-27T09:41:47","slug":"a-propos-des-en-2","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogjardin\/2005\/03\/23\/a-propos-des-en-2\/","title":{"rendered":"A propos des engrais"},"content":{"rendered":"

<\/a>\"Image24a_engrais_naturel_farine_os_mt\"<\/a> Quels sont les engrais n\u00e9cessaires \u00e0 notre sol? Quels sont ceux qui conviennent le mieux \u00e0 chaque plante, comment et quand les appliquer? voici en r\u00e9sum\u00e9 la composition de ces engrais, et l’int\u00e9r\u00eat de leur emploi. La plante est un \u00eatre vivant qui a besoin d’air pour respirer (il lui fournit de l’oxyg\u00e8ne et du carbone) et d’eau pour pomper les  \u00e9l\u00e9ments min\u00e9raux contenus dans la terre; ce sont pour l’essentiel, de l’azote, de l’acide phosphorique et de la potasse, qui p\u00e9n\u00e9treront par les racines et seront v\u00e9hicul\u00e9s par la s\u00e8ve:<\/p>\n

L’azote<\/a>(N) pour stimuler la v\u00e9g\u00e9tation et la croissance de toutes les parties vertes: (engrais gazon par exp.) A n’employer qu’en p\u00e9riode de v\u00e9g\u00e9tation active, comme "coup de fouet".<\/p>\n

L’acide phosphorique<\/a>(P) pour doper la formation des fleurs et des fruits, rendre la plante plus r\u00e9sistante aux maladies, et la fortifier dans son ensemble tout en aidant au d\u00e9veloppement des racines: ( engrais rosiers, tomates, fruitiers).<\/p>\n

La potasse<\/a>(K) pour assurer la formation des r\u00e9serves des bulbes et tubercules, aider \u00e0 l’absorption de l’azote par la plante, am\u00e9liorer sa r\u00e9sistance \u00e0 la s\u00e9cheresse et intensifier la couleur des fleurs et le go\u00fbt des fruits et des l\u00e9gumes.<\/p>\n

D’autres \u00e9l\u00e9ments indispensables se trouvent dans le sol comme le calcium, le magn\u00e9sium et le souffre, n\u00e9cessaires \u00e0 la plante, mais absorb\u00e9s en faible quantit\u00e9, de m\u00eame que les oligo-\u00e9l\u00e9ments tels le fer(chlorose, s’il en manque) le bore, le zinc, le cuivre le mangan\u00e8se…<\/p>\n

Des formules toutes pr\u00eates sont propos\u00e9es dans le commerce pour simplifier nos choix, ainsi que des engrais \u00e0 diffusion lente qui nourrissent la plante durant 6 mois, l’engrais se diluant progressivement \u00e0 chaque arrosage. Retenir que les engrais liquides doivent toujours s’appliquer apr\u00e8s un arrosage sur un terreau humide, et qu’il ne faut jamais mettre les engrais en contact direct avec les racines pour ne pas les br\u00fbler.<\/p>\n","protected":false},"excerpt":{"rendered":"

Quels sont les engrais n\u00e9cessaires \u00e0 notre sol? Quels sont ceux qui conviennent le mieux \u00e0 chaque plante, comment et quand les appliquer? voici en r\u00e9sum\u00e9 la composition de ces engrais, et l’int\u00e9r\u00eat de leur emploi. La plante est un \u00eatre vivant qui a besoin d’air pour respirer (il lui fournit de l’oxyg\u00e8ne et du […]<\/p>\n","protected":false},"author":358,"featured_media":1716,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-1513","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-engrais"],"yoast_head":"\nA propos des engrais - Le blog jardin<\/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\/leblogjardin\/2005\/03\/23\/a-propos-des-en-2\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A propos des engrais - Le blog jardin\" \/>\n<meta property=\"og:description\" content=\"Quels sont les engrais n\u00e9cessaires \u00e0 notre sol? 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