{"id":17061,"date":"2022-04-20T15:35:00","date_gmt":"2022-04-20T13:35:00","guid":{"rendered":"https:\/\/www.biovision.ch\/story\/wir-mussen-den-boden-futtern\/"},"modified":"2022-08-15T14:12:08","modified_gmt":"2022-08-15T12:12:08","slug":"il-est-temps-de-nourrir-le-sol","status":"publish","type":"story","link":"https:\/\/www.biovision.ch\/fr\/story\/il-est-temps-de-nourrir-le-sol\/","title":{"rendered":"Il est temps de nourrir le sol"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"17061\" class=\"elementor elementor-17061 elementor-16953\" data-elementor-post-type=\"story\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8af84e animated-slow elementor-section-boxed elementor-section-height-default elementor-section-height-default elementor-invisible\" data-id=\"8af84e\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;zoomIn&quot;,&quot;_ob_glider_is_slider&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-503c59bc\" data-id=\"503c59bc\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-22b8222c elementor-widget elementor-widget-image\" data-id=\"22b8222c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"659\" height=\"440\" src=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/Biovision_-_Joost_Bastmeijer_Feldarbeit.jpg\" class=\"attachment-large size-large wp-image-16968\" alt=\"Der Bauer Patrick Maive bewirtschaftet seinen Boden mit einer Hacke.\" srcset=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/Biovision_-_Joost_Bastmeijer_Feldarbeit.jpg 659w, https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/Biovision_-_Joost_Bastmeijer_Feldarbeit-300x200.jpg 300w\" sizes=\"(max-width: 659px) 100vw, 659px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Un sol cultiv\u00e9 de mani\u00e8re \u00e9cologique n\u00e9cessite des soins particuliers, surtout sous les tropiques - l'agriculteur Patrick Maive dans sa ferme biologique de la r\u00e9gion de Kangari, au Kenya. (Photo : Joost Bastmeijer)<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1b66eed8 elementor-section-boxed elementor-section-height-default elementor-section-height-default elementor-invisible\" data-id=\"1b66eed8\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;,&quot;_ob_glider_is_slider&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-3df51ee9 text-width\" data-id=\"3df51ee9\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-583ae2f3\" data-id=\"583ae2f3\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2cc435a0 text elementor-widget elementor-widget-text-editor\" data-id=\"2cc435a0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_postman_use&quot;:&quot;no&quot;,&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Au cours des derni\u00e8res d\u00e9cennies, des pratiques agricoles courantes et souvent nuisibles telles que la monoculture et une utilisation inappropri\u00e9e d\u2019engrais et de produits phytosanitaires de synth\u00e8se ont entra\u00een\u00e9 dans les r\u00e9gions tropicales un appauvrissement cons\u00e9quent de la teneur en humus des terres agricoles. Les atteintes aux fonctions naturelles des sols qui en ont r\u00e9sult\u00e9 ont engendr\u00e9 \u00e0 leur tour une perte de biodiversit\u00e9, une \u00e9rosion des sols et, par cons\u00e9quent, une diminution des r\u00e9coltes. Il est temps d\u2019agir, et vite.<\/p><p>Depuis de nombreuses ann\u00e9es, SysCom compare les eff ets \u00e0 long terme de l\u2019agriculture bio avec ceux de l\u2019agriculture conventionnelle dans les r\u00e9gions tropicales (voir p. 2\u20133). En la mati\u00e8re, les scientifi ques ont une bonne nouvelle\u2009: l\u2019agriculture biologique off re des solutions concr\u00e8tes\u2009! Et ces derni\u00e8res germent sous nos pieds.<\/p><p>Voici un des constats principaux\u2009: la qualit\u00e9 et la sant\u00e9 des sols sont essentielles pour garantir la productivit\u00e9 et la sant\u00e9 des syst\u00e8mes agricoles. L\u2019agriculture conventionnelle con\u00e7oit globalement le sol comme un milieu de transport qui am\u00e8ne aux plantes des nutriments et de l\u2019eau apport\u00e9s de fa\u00e7on artifi &#8211; cielle. L\u2019agriculture bio consid\u00e8re quant \u00e0 elle que le sol fait partie int\u00e9grante du syst\u00e8me de production et qu\u2019il s\u2019acquitte de fonctions tr\u00e8s diverses\u2009: une fonction d\u2019habitat pour une multitude de micro-organismes, mais aussi des fonctions de r\u00e9servoir, de fi ltre, de tampon, de transport ainsi que de transformation des nutriments et de l\u2019eau. Mais pour qu\u2019il puisse assurer toutes ces fonctions, le sol doit \u00eatre d\u00e9velopp\u00e9 et entretenu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-432f2076\" data-id=\"432f2076\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-22d37275\" data-id=\"22d37275\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-1823e2db elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1823e2db\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ob_glider_is_slider&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-26d9018\" data-id=\"26d9018\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-aa3c07e elementor-widget elementor-widget-image\" data-id=\"aa3c07e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"150\" height=\"200\" src=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/Biovision_David_Bautze_Bild.jpg\" class=\"attachment-large size-large wp-image-16978\" alt=\"Portr\u00e4t von David Bautze.\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div data-dce-title-color=\"#333333\" class=\"elementor-element elementor-element-10d59c6b elementor-widget elementor-widget-heading\" data-id=\"10d59c6b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www.fibl.org\/de\/ueber-uns\/team\/bautze-david\">David Bautze<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2348594e text elementor-widget elementor-widget-text-editor\" data-id=\"2348594e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_postman_use&quot;:&quot;no&quot;,&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>est chercheur au D\u00e9partement de la coop\u00e9ration internationale du <a href=\"https:\/\/www.fibl.org\/fr\/\" target=\"_blank\" rel=\"noopener\">FiBL<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-27067c71 animated-slow elementor-section-boxed elementor-section-height-default elementor-section-height-default elementor-invisible\" data-id=\"27067c71\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;zoomIn&quot;,&quot;_ob_glider_is_slider&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1e575981\" data-id=\"1e575981\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-30ee4ffb elementor-widget elementor-widget-image\" data-id=\"30ee4ffb\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/08\/Biovision_Infografik_Boden_fuettern_FR.pdf\" target=\"_blank\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"659\" height=\"920\" src=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/Biovision_Infografik_Boden_BVM69_FR.jpg\" class=\"attachment-full size-full wp-image-17074\" alt=\"Infographie: Daniel R\u00f6ttele, infografik.ch. Source: Biovision, Le Monde diplomatique.\" srcset=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/Biovision_Infografik_Boden_BVM69_FR.jpg 659w, https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/Biovision_Infografik_Boden_BVM69_FR-215x300.jpg 215w\" sizes=\"(max-width: 659px) 100vw, 659px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Infographie: Daniel R\u00f6ttele, infografik.ch. Source: Biovision, Le Monde diplomatique. Cliquez sur l'image pour ouvrir le PDF (affichage optimal en cas d'impression au format A3).<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-11c15023 elementor-section-boxed elementor-section-height-default elementor-section-height-default elementor-invisible\" data-id=\"11c15023\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;,&quot;_ob_glider_is_slider&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-722f5fff\" data-id=\"722f5fff\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-431d08eb text elementor-widget elementor-widget-text-editor\" data-id=\"431d08eb\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_postman_use&quot;:&quot;no&quot;,&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Le carbone comme \u00e9l\u00e9ment fondamental<\/h2><p>Dans l\u2019agriculture bio, on ne se contente pas de nourrir les plantes\u2009: on nourrit aussi le sol. Car un sol en bonne sant\u00e9 est \u00e0 m\u00eame de nourrir durablement les plantes qui y poussent. \u00c9l\u00e9ment fondamental commun \u00e0 tous les \u00eatres vivants, connu \u00e9galement sous la forme de dioxyde de carbone (CO2) et tristement c\u00e9l\u00e8bre en tant que gaz \u00e0 eff et de serre, le carbone joue un r\u00f4le essentiel dans ce processus. Il est stock\u00e9 dans les sols sous forme d\u2019humus et peut \u00eatre lib\u00e9r\u00e9 dans l\u2019atmosph\u00e8re si les sols sont malmen\u00e9s.<\/p><p>L\u2019humus est une forme complexe de carbone qui se d\u00e9veloppe \u00e0 travers un long processus de transformation de mati\u00e8re organique morte (r\u00e9sidus v\u00e9g\u00e9taux). Diff \u00e9rents organismes du sol tels que vers de terre, collemboles, bact\u00e9ries et champignons se chargent de d\u00e9composer la mati\u00e8re. Ils produisent d\u2019une part l\u2019humus jeune, disponible \u00e0 court terme, et d\u2019autre part l\u2019humus stable, qui peut subsister sur plusieurs d\u00e9cennies.<\/p><p>L\u2019humus remplit des fonctions tr\u00e8s vari\u00e9es\u2009:<\/p><ul><li>Il accumule des \u00e9l\u00e9ments nutritifs importants pour les plantes et stocke l\u2019eau telle une \u00e9ponge.<\/li><li>Il est capable de fi xer des substances nocives comme les m\u00e9taux lourds et donc de les neutraliser.<\/li><li>Il contribue \u00e0 perm\u00e9abiliser et \u00e0 stabiliser le sol, pr\u00e9venant ainsi son \u00e9rosion.<\/li><li>Il joue le r\u00f4le d\u2019habitat pour des organismes du sol et des v\u00e9g\u00e9taux.<\/li><li>Il peut stocker du carbone dans le sol, contribuant ainsi \u00e0 la protection du climat.<\/li><\/ul><p>\u00a0<\/p><p>Dans un climat tropical, il est plus diffi cile de constituer de l\u2019humus et de le pr\u00e9server. L\u2019activit\u00e9 des organismes du sol y est en g\u00e9n\u00e9ral plus importante en raison des temp\u00e9ratures \u00e9lev\u00e9es et de l\u2019humidit\u00e9 qui r\u00e8gnent toute l\u2019ann\u00e9e. D\u00e8s que le sol est labour\u00e9, il est a\u00e9r\u00e9, ce qui accro\u00eet encore cette activit\u00e9. Il se peut alors que la quantit\u00e9 d\u2019humus qui se d\u00e9compose soit sup\u00e9rieure \u00e0 celle qui se d\u00e9veloppe, ce qui se traduit par la perte d\u2019un sol sain et pr\u00e9cieux.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-525cca44 elementor-section-boxed elementor-section-height-default elementor-section-height-default elementor-invisible\" data-id=\"525cca44\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;,&quot;_ob_glider_is_slider&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2535f80d\" data-id=\"2535f80d\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4b4bc32d text elementor-widget elementor-widget-text-editor\" data-id=\"4b4bc32d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_postman_use&quot;:&quot;no&quot;,&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>La sant\u00e9 de la terre passe par l\u2019apport de mati\u00e8res organiques<\/h2><p>Nos essais comparatifs ont d\u00e9montr\u00e9 que la formation d\u2019humus dans les champs cultiv\u00e9s en agriculture biologique n\u2019est possible que si les apports de mati\u00e8re organique, et donc de carbone, sont cons\u00e9quents. Nous avons pu en r\u00e9unir des quantit\u00e9s suffi santes en utilisant du compost qui contenait de la paille de ma\u00efs, du fumier de bovins, des cendres ainsi que diff \u00e9rents v\u00e9g\u00e9taux riches en nutriments (Tithonia). Une fois les couches dispos\u00e9es de mani\u00e8re optimale, le compost a \u00e9t\u00e9 retourn\u00e9 r\u00e9guli\u00e8rement puis stock\u00e9 plusieurs semaines, afi n de permettre aux parts de carbone de se fi xer ad\u00e9quatement. L\u2019apport direct de mati\u00e8res v\u00e9g\u00e9tales sur les surfaces cultiv\u00e9es contribue lui aussi \u00e0 am\u00e9liorer la qualit\u00e9 du sol. Couvrir le sol avec un paillis ou incorporer du compost ne prot\u00e8ge pas seulement le sol du lessivage et de la dessication. Les organismes du sol travaillent \u00e9galement activement pour transformer la mati\u00e8re en humus. Apr\u00e8s cinq ans environ, l\u2019augmentation de la quantit\u00e9 d\u2019humus et les b\u00e9n\u00e9fi ces qui en d\u00e9coulent assurent de meilleures r\u00e9coltes. Les exemples de Joyce Wangari et de Patrick Maive aux pages pr\u00e9c\u00e9dentes illustrent ce ph\u00e9nom\u00e8ne.<\/p><p>Pour conclure, deux facteurs sont d\u00e9cisifs pour la r\u00e9g\u00e9n\u00e9ration des sols. Le premier est la connaissance de m\u00e9thodes pratiques, effi caces et adapt\u00e9es aux conditions locales pour d\u00e9velopper activement l\u2019humus. Le second est la patience.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-25075a26 elementor-reverse-mobile elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default elementor-invisible\" data-id=\"25075a26\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;stretch_section&quot;:&quot;section-stretched&quot;,&quot;animation&quot;:&quot;fadeInUp&quot;,&quot;_ob_glider_is_slider&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-3b7f187b elementor-hidden-mobile\" data-id=\"3b7f187b\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-2d5374c0\" data-id=\"2d5374c0\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div data-dce-title-color=\"#333333\" class=\"elementor-element elementor-element-3eae9382 elementor-widget elementor-widget-heading\" data-id=\"3eae9382\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/08\/web_220525_BVM70_fr.pdf\" target=\"_blank\">Biovision magazine juin 2022 (N\u00b0 70)<\/a><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-752437b2 text elementor-widget elementor-widget-text-editor\" data-id=\"752437b2\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_postman_use&quot;:&quot;no&quot;,&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Dans le dernier num\u00e9ro de notre magazine consacr\u00e9 au th\u00e8me du sol, d\u00e9couvrez comment une agricultrice et un agriculteur au Kenya ont rendu leur sol \u00e0 nouveau fertile, pourquoi (et comment) il faut nourrir les sols et \u00e0 quel point les \u0153ufs bio sont durables.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div data-dce-background-color=\"#F6F6F600\" class=\"elementor-element elementor-element-2e07b8f9 elementor-align-left elementor-widget elementor-widget-button\" data-id=\"2e07b8f9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/08\/web_220525_BVM70_fr.pdf\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Version \u00e0 imprimer<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-4cb0bca1\" data-id=\"4cb0bca1\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-5fa28e08 elementor-invisible\" data-id=\"5fa28e08\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;animation&quot;:&quot;fadeInRight&quot;,&quot;_ob_column_hoveranimator&quot;:&quot;no&quot;,&quot;_ob_column_has_pseudo&quot;:&quot;no&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-75e31fff elementor-widget elementor-widget-image\" data-id=\"75e31fff\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_ob_widget_stalker_use&quot;:&quot;no&quot;,&quot;_ob_allow_hoveranimator&quot;:&quot;no&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/08\/web_220525_BVM70_fr.pdf\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1072\" src=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/web_220525_BVM70_fr-768x1072.jpg\" class=\"attachment-medium_large size-medium_large wp-image-17091\" alt=\"\" srcset=\"https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/web_220525_BVM70_fr-768x1072.jpg 768w, https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/web_220525_BVM70_fr-215x300.jpg 215w, https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/web_220525_BVM70_fr-734x1024.jpg 734w, https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/web_220525_BVM70_fr-1101x1536.jpg 1101w, https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/web_220525_BVM70_fr-1468x2048.jpg 1468w, https:\/\/www.biovision.ch\/wp-content\/uploads\/2022\/04\/web_220525_BVM70_fr-scaled.jpg 1835w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Lutter contre la faim, pr\u00e9server la biodiversit\u00e9 et s\u2019adapter au changement climatique : l\u2019agriculture des r\u00e9gions tropicales doit elle aussi relever des d\u00e9fis aussi urgents qu\u2019importants. Les solutions sont bio et germent juste sous nos pieds.<\/p>\n","protected":false},"featured_media":9551,"template":"","exclude-from-search":[],"newsletter":[],"region":[237],"projektthema":[488,545],"themen":[250,254],"class_list":["post-17061","story","type-story","status-publish","has-post-thumbnail","hentry","region-action-en-afrique-subsaharienne","projektthema-boden-fr","projektthema-syscom-fr","themen-agriculture","themen-savoir"],"publishpress_future_action":{"enabled":false,"date":"2026-06-12 10:27:32","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"newsletter","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/story\/17061","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/story"}],"about":[{"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/types\/story"}],"version-history":[{"count":0,"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/story\/17061\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/media\/9551"}],"wp:attachment":[{"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/media?parent=17061"}],"wp:term":[{"taxonomy":"exclude-from-search","embeddable":true,"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/exclude-from-search?post=17061"},{"taxonomy":"newsletter","embeddable":true,"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/newsletter?post=17061"},{"taxonomy":"region","embeddable":true,"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/region?post=17061"},{"taxonomy":"projektthema","embeddable":true,"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/projektthema?post=17061"},{"taxonomy":"themen","embeddable":true,"href":"https:\/\/www.biovision.ch\/fr\/wp-json\/wp\/v2\/themen?post=17061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}