{"id":1064,"date":"2021-10-28T10:12:17","date_gmt":"2021-10-28T08:12:17","guid":{"rendered":"https:\/\/legrowshop.com\/blog\/?p=1064"},"modified":"2022-12-02T16:28:14","modified_gmt":"2022-12-02T15:28:14","slug":"la-conductivite-en-culture-en-interieur","status":"publish","type":"post","link":"https:\/\/legrowshop.com\/blog\/la-conductivite-en-culture-en-interieur\/","title":{"rendered":"La conductivit\u00e9 en culture en int\u00e9rieur"},"content":{"rendered":"Temps de lecture\u00a0: <\/span> 4<\/span> minutes<\/span><\/span>

[vc_row][vc_column][vc_column_text]<\/p>\n

La conductivit\u00e9 \u00e9lectrique de l\u2019eau<\/strong> est un sujet que tout cultivateur en int\u00e9rieur se doit de ma\u00eetriser. Si vos plantes pr\u00e9sentent des signes de maladies ou de carences, c\u2019est m\u00eame le premier facteur qu\u2019il faudra v\u00e9rifier. Dans cet article on vous explique ce qu’est la conductivit\u00e9 \u00e9lectrique, comment la mesurer et surtout comme l’ajuster.<\/p>\n

Le principe de la conductivit\u00e9<\/h2>\n

L\u2019\u00e9lectro conductivit\u00e9 (EC) est la mesure pr\u00e9cise de la conductivit\u00e9 \u00e9lectrique d\u2019une solution aqueuse. Plus pr\u00e9cis\u00e9ment, c\u2019est la concentration ionique des diff\u00e9rents \u00e9l\u00e9ments min\u00e9raux<\/strong>, pr\u00e9sents dans une solution nutritive. Les ions pr\u00e9sents sont class\u00e9s en deux groupes\u00a0: les anions<\/strong> qui poss\u00e8dent une charge \u00e9lectrique n\u00e9gative et les cations<\/strong> qui, eux, poss\u00e8dent une charge \u00e9lectrique positive.<\/p>\n

\u00c7a vous avance\u00a0? Nous pas vraiment, on va tenter de simplifier un peu tout \u00e7a.<\/p>\n

En r\u00e9sume, la conductivit\u00e9, c\u2019est simplement la mesure de la quantit\u00e9 d\u2019\u00e9l\u00e9ments solubles<\/strong> pr\u00e9sents dans l\u2019eau ou dans une solution nutritive<\/strong>. L\u2019eau pure ne contient pas d\u2019\u00e9l\u00e9ments solubles par exemple, sa conductivit\u00e9 est donc \u00e9gale \u00e0 z\u00e9ro. L\u2019eau du robinet en revanche, en comprend, ce qui va avoir pour effet le d\u00e9placement de l\u2019\u00e9lectricit\u00e9 \u00e0 travers la solution<\/strong>. On appelle ce ph\u00e9nom\u00e8ne la conductivit\u00e9 \u00e9lectrique. On mesure l\u2019EC avec un testeur \u00e9lectronique<\/a> et elle se traduit en PPM<\/strong> (parties par million).<\/p>\n

La conductivit\u00e9 d\u2019une solution d\u00e9pend donc de la composition et de la concentration d\u2019ions de celle-ci.<\/p>\n

S\u2019il est si important de mesurer la conductivit\u00e9 de sa solution nutritive, c\u2019est que cette mesure vous permettra de conna\u00eetre sa concentration min\u00e9rale<\/strong>. Une fois d\u00e9termin\u00e9e, vous pourrez conna\u00eetre la quantit\u00e9 de nutriments \u00e0 apporter \u00e0 votre plante. Ainsi elle pourra se d\u00e9velopper au mieux.<\/p>\n

Le r\u00f4le de la temp\u00e9rature et du pH dans la conductivit\u00e9 \u00e9lectrique<\/h2>\n
\"\"

Contr\u00f4le de la temp\u00e9rature<\/p><\/div>\n

<\/h2>\n

Si les engrais et les fertilisants agissent sur les fluctuations de l\u2019EC, la temp\u00e9rature de votre solution nutritive aussi. La temp\u00e9rature de l\u2019eau favorisera l\u2019oxyg\u00e9nation et donc l\u2019assimilation des nutriments par la plante.<\/strong> Pour une assimilation optimale, il est conseill\u00e9 de nourrir sa plante avec une solution nutritive comprise en 18 et 22 \u00b0C<\/strong>. Si la temp\u00e9rature de votre solution est trop fra\u00eeche ou trop chaude, cela risque de diminuer la capacit\u00e9 d\u2019assimilation<\/strong> de votre plante. En dessous de 10\u00b0 ou au-dessus de 30\u00b0C la solution aura une carence en oxyg\u00e8ne. Cela entra\u00eenera l\u2019asphyxie des racines<\/strong> de votre plante.<\/p>\n

Le pH<\/strong> <\/a>est lui aussi un facteur capital<\/strong> de la conductivit\u00e9 \u00e9lectrique. Il devra \u00eatre adapt\u00e9 pour assurer une absorption optimale des nutriments. Pour une culture en terre, le pH devra id\u00e9alement se trouver entre 6,0 et 6,5<\/strong>. Si vous cultivez avec un syst\u00e8me hydroponique<\/a> ou avec un substrat coco, vous devriez adapter votre pH entre 5,5 et 6,1<\/strong>.<\/p>\n

En conclusion, si vous mesurez une EC trop haute ou trop basse, pensez \u00e0 v\u00e9rifier la temp\u00e9rature et le pH !<\/strong><\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb2\/3″][vc_column_text]<\/p>\n

Les diff\u00e9rentes r\u00e9actions de mes plantes \u00e0 la conductivit\u00e9<\/h2>\n

Si vous utilisez des engrais et des fertilisants pour booster la croissance de vos plantes, sachez qu\u2019un mauvais contr\u00f4le de l\u2019EC peut provoquer la mort des racines<\/strong> de vos plantes. Il faut comprendre que l\u2019EC du votre solution nutritive doit \u00eatre inf\u00e9rieur \u00e0 l\u2019EC des racines de votre plante. Ainsi la plante s\u2019alimentera correctement.<\/p>\n

En revanche, si la conductivit\u00e9 n\u2019est pas stable, la plante pourra stocker beaucoup trop de nutriments<\/strong> dans ses racines, ce qui provoquera des br\u00fblures et la mort de cette derni\u00e8re. De plus, si l\u2019EC est trop basse, les nutriments ne circuleront pas correctement. La plante risque alors, de montrer des signes de carences.<\/p>\n

Vous l\u2019aurez compris\u00a0: une mauvaise conductivit\u00e9 peut ruiner votre culture.<\/strong> Il est donc important de prendre r\u00e9guli\u00e8rement des mesures et de l\u2019ajuster au besoin, surtout si vous cultivez en hydroponie. Pas de panique, on vous explique tout.<\/p>\n

Comment mesurer et ajuster la conductivit\u00e9\u00a0?<\/h2>\n

Pour pouvoir mesurer l\u2019\u00e9lectro conductivit\u00e9, vous pouvez utiliser un testeur \u00e9lectronique. Il vous donnera une mesure pr\u00e9cise de l\u2019EC de votre eau ou votre solution nutritive. Afin de pr\u00e9venir les risques de manque ou de surdose de nutriments, il existe un intervalle optimal<\/strong> pour chaque syst\u00e8me de culture.<\/p>\n

\"\"

Intervalle optimal de la conductivit\u00e9 \u00e9lectrique<\/p><\/div>\n

Pour ajuster une conductivit\u00e9 trop basse ou trop haute, vous devrez faire attention \u00e0 la quantit\u00e9 de nutriments<\/strong> que vous administrez \u00e0 votre plante. Si votre EC est haut, vous pourrez rincer votre substrat avec un liquide de rin\u00e7age<\/strong> ou tout simplement \u00e0 l\u2019eau clair. Vous pouvez \u00e9galement ajouter de l’eau \u00e0 votre solution, cela permettra de diluer et de faire baisser l’EC.<\/p>\n

La s\u00e9lection du Growshop<\/h2>\n

[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb1\/3″][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb1\/6″][vc_single_image image=\u00a0\u00bb1076″ img_size=\u00a0\u00bb200×200″ add_caption=\u00a0\u00bbyes\u00a0\u00bb alignment=\u00a0\u00bbcenter\u00a0\u00bb onclick=\u00a0\u00bbcustom_link\u00a0\u00bb img_link_target=\u00a0\u00bb_blank\u00a0\u00bb link=\u00a0\u00bbhttps:\/\/legrowshop.com\/testeurs-ph\/112-kit-test-rapide-ph.html\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/6″][vc_single_image image=\u00a0\u00bb1074″ img_size=\u00a0\u00bb200×200″ add_caption=\u00a0\u00bbyes\u00a0\u00bb alignment=\u00a0\u00bbcenter\u00a0\u00bb onclick=\u00a0\u00bbcustom_link\u00a0\u00bb img_link_target=\u00a0\u00bb_blank\u00a0\u00bb link=\u00a0\u00bbhttps:\/\/legrowshop.com\/testeurs-ec\/100-testeur-stylo-ec-et-temperature-bluelab.html?fast_search=fs\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/6″][vc_single_image image=\u00a0\u00bb1075″ img_size=\u00a0\u00bb200×200″ add_caption=\u00a0\u00bbyes\u00a0\u00bb alignment=\u00a0\u00bbcenter\u00a0\u00bb onclick=\u00a0\u00bbcustom_link\u00a0\u00bb img_link_target=\u00a0\u00bb_blank\u00a0\u00bb link=\u00a0\u00bbhttps:\/\/legrowshop.com\/tests-etalonnage\/102-solution-d-etalonnage-ph4-bluelab.html\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/6″][vc_single_image image=\u00a0\u00bb151″ img_size=\u00a0\u00bb200×200″ add_caption=\u00a0\u00bbyes\u00a0\u00bb alignment=\u00a0\u00bbcenter\u00a0\u00bb onclick=\u00a0\u00bbcustom_link\u00a0\u00bb img_link_target=\u00a0\u00bb_blank\u00a0\u00bb link=\u00a0\u00bbhttps:\/\/legrowshop.com\/engrais\/87-solution-enzymatique-sensizym-advanced-nutrients.html?fast_search=fs\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/6″][\/vc_column][vc_column width=\u00a0\u00bb1\/6″][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"

Temps de lecture\u00a0: <\/span> 4<\/span> minutes<\/span><\/span> La conductivit\u00e9 \u00e9lectrique de l\u2019eau est un sujet que tout cultivateur en int\u00e9rieur se doit de ma\u00eetriser. Si vos plantes pr\u00e9sentent des signes de maladies ou de carences, c\u2019est m\u00eame le premier facteur qu\u2019il faudra v\u00e9rifier. Dans cet article on vous explique ce qu’est la conductivit\u00e9 \u00e9lectrique, comment la mesurer et surtout comme l’ajuster.<\/p>\n","protected":false},"author":3,"featured_media":1083,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ub_ctt_via":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1,3],"tags":[],"class_list":["post-1064","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conseils","category-tout-savoir-sur-leau"],"featured_image_src":"https:\/\/legrowshop.com\/blog\/wp-content\/uploads\/2021\/10\/Banniere-germination-2.png","author_info":{"display_name":"Jeanne","author_link":"https:\/\/legrowshop.com\/blog\/author\/growshop\/"},"yoast_head":"\nLa conductivit\u00e9 en culture en int\u00e9rieur — Blog GrowShop<\/title>\n<meta name=\"description\" content=\"La conductivit\u00e9 de l\u2019eau est un sujet que tout cultivateur en int\u00e9rieur se doit de ma\u00eetriser. 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