{"id":1088965,"date":"2026-04-05T07:57:22","date_gmt":"2026-04-05T07:57:22","guid":{"rendered":"https:\/\/profertilizer.dk\/?p=1088965"},"modified":"2026-04-05T07:57:24","modified_gmt":"2026-04-05T07:57:24","slug":"ujaevn-vaekst-i-marken-et-klassisk-problem","status":"publish","type":"post","link":"https:\/\/profertilizer.dk\/en\/ujaevn-vaekst-i-marken-et-klassisk-problem\/","title":{"rendered":"Uj\u00e6vn v\u00e6kst i marken \u2013 et klassisk problem"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Uj\u00e6vn v\u00e6kst i marken \u2013 et klassisk problem<\/h2>\n\n\n\n<p>Uj\u00e6vn v\u00e6kst i marken er noget, de fleste planteavlere oplever hvert \u00e5r.<\/p>\n\n\n\n<p>Du ser det tydeligt:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pletter der halter<\/li>\n\n\n\n<li>Omr\u00e5der der er lysere<\/li>\n\n\n\n<li>Planter der ikke f\u00f8lger resten<\/li>\n<\/ul>\n\n\n\n<p>Det virker tilf\u00e6ldigt \u2013 men det er det sj\u00e6ldent.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Hvorfor opst\u00e5r uj\u00e6vn v\u00e6kst i marken?<\/h2>\n\n\n\n<p>Uj\u00e6vn v\u00e6kst i marken opst\u00e5r typisk som et samspil mellem:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Jordstruktur (pakning og variation)<\/li>\n\n\n\n<li>Vand (for meget eller for lidt)<\/li>\n\n\n\n<li>Temperaturforskelle<\/li>\n\n\n\n<li>N\u00e6ringsstof-tilg\u00e6ngelighed<\/li>\n<\/ul>\n\n\n\n<p>Men en afg\u00f8rende faktor bliver ofte overset:<\/p>\n\n\n\n<p><strong>Plantens evne til at optage n\u00e6ring.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Rodzonen \u2013 der hvor forskellene starter<\/h2>\n\n\n\n<p>Selvom der er n\u00e6ringsstoffer i jorden, er det ikke sikkert, at planten kan optage dem.<\/p>\n\n\n\n<p>I omr\u00e5der med:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pakning<\/li>\n\n\n\n<li>Kolde forhold<\/li>\n\n\n\n<li>H\u00f8j vandm\u00e6tning<\/li>\n<\/ul>\n\n\n\n<p>vil rodaktiviteten v\u00e6re lav.<\/p>\n\n\n\n<p>Resultatet er, at nogle planter f\u00e5r n\u00e6ring \u2013 mens andre ikke g\u00f8r.<\/p>\n\n\n\n<p>Det er her, uj\u00e6vn v\u00e6kst i marken begynder.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Mangan og svovl \u2013 n\u00f8glen i tidlig v\u00e6kst<\/h2>\n\n\n\n<p>I praksis ser vi ofte, at uj\u00e6vn v\u00e6kst i marken h\u00e6nger sammen med:<\/p>\n\n\n\n<p><strong>Mangan (Mn)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sv\u00e6rt tilg\u00e6ngeligt i kolde og iltfattige jorde<\/li>\n\n\n\n<li>Kr\u00e6ver aktiv optagelse<\/li>\n\n\n\n<li>Mangler viser sig hurtigt som lysfarvning og v\u00e6ksth\u00e6mning<\/li>\n<\/ul>\n\n\n\n<p><strong>Svovl (S)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lav tilg\u00e6ngelighed tidligt i s\u00e6sonen<\/li>\n\n\n\n<li>Afg\u00f8rende for kv\u00e6lstofudnyttelse<\/li>\n\n\n\n<li>P\u00e5virker plantens v\u00e6kst og ensartethed<\/li>\n<\/ul>\n\n\n\n<p>Det er kombinationen, der er interessant.<\/p>\n\n\n\n<p>Hvis planten mangler svovl, udnyttes kv\u00e6lstof d\u00e5rligere \u2013<br>og s\u00e5 bliver forskellene i marken endnu tydeligere.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Det er ikke altid et mangelproblem<\/h2>\n\n\n\n<p>En vigtig pointe:<\/p>\n\n\n\n<p>Uj\u00e6vn v\u00e6kst i marken skyldes ikke n\u00f8dvendigvis, at der mangler n\u00e6ringsstoffer i jorden.<\/p>\n\n\n\n<p>Ofte handler det om:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nutrient availability<\/li>\n\n\n\n<li>Optagelsesforhold<\/li>\n\n\n\n<li>Timing<\/li>\n<\/ul>\n\n\n\n<p>Derfor hj\u00e6lper det ikke altid bare at tilf\u00f8re mere.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Hvad kan du g\u00f8re ved uj\u00e6vn v\u00e6kst i marken?<\/h2>\n\n\n\n<p>Hvis du vil reducere uj\u00e6vn v\u00e6kst i marken, handler det om at arbejde med betingelserne:<\/p>\n\n\n\n<p><strong>1. Underst\u00f8t optagelsen<\/strong><br>Bladg\u00f8dskning med mangan kan sikre hurtig tilg\u00e6ngelighed<\/p>\n\n\n\n<p><strong>2. T\u00e6nk svovl tidligt<\/strong><br>S\u00f8rg for, at planten kan udnytte kv\u00e6lstof optimalt<\/p>\n\n\n\n<p><strong>3. Reag\u00e9r i tide<\/strong><br>Jo tidligere du handler, jo st\u00f8rre effekt kan du opn\u00e5<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Eksempel fra praksis<\/h2>\n\n\n\n<p>I for\u00e5ret ser vi ofte uj\u00e6vn v\u00e6kst i kornmarker.<\/p>\n\n\n\n<p>Typisk:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kolde omr\u00e5der halter<\/li>\n\n\n\n<li>Lavninger er bagefter<\/li>\n\n\n\n<li>Planter med lav rodaktivitet mangler mangan<\/li>\n<\/ul>\n\n\n\n<p>Samtidig er svovltilg\u00e6ngeligheden lav.<\/p>\n\n\n\n<p>Ved at arbejde med begge dele kan du:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reducere forskelle<\/li>\n\n\n\n<li>F\u00e5 en mere ensartet mark<\/li>\n\n\n\n<li>Give planterne en bedre start<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Konklusion: Uj\u00e6vn v\u00e6kst starter under overfladen<\/h2>\n\n\n\n<p>Uj\u00e6vn v\u00e6kst i marken er ikke tilf\u00e6ldig.<\/p>\n\n\n\n<p>Den starter i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rodzonen<\/li>\n\n\n\n<li>Optagelsen<\/li>\n\n\n\n<li>Samspillet mellem n\u00e6ringsstoffer<\/li>\n<\/ul>\n\n\n\n<p>N\u00e5r du arbejder med \u00e5rsagen \u2013 ikke kun symptomet \u2013 kan du reducere forskellene markant.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Kort sagt<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Uj\u00e6vn v\u00e6kst i marken skyldes ofte optagelsesproblemer<\/li>\n\n\n\n<li>Rodaktivitet er afg\u00f8rende<\/li>\n\n\n\n<li>Mangan og svovl spiller en central rolle<\/li>\n\n\n\n<li>Timing er vigtigere end m\u00e6ngde<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Hvis du vil arbejde med l\u00f8sninger fremfor produkter, handler det om dette:<\/p>\n\n\n\n<p><strong>At sikre, at planten kan optage det, der allerede er der.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>Uj\u00e6vn v\u00e6kst i marken \u2013 et klassisk problem Uj\u00e6vn v\u00e6kst i marken er noget, de fleste planteavlere oplever hvert \u00e5r. Du ser det tydeligt: Det virker tilf\u00e6ldigt \u2013 men det er det sj\u00e6ldent. Hvorfor opst\u00e5r uj\u00e6vn v\u00e6kst i marken? Uj\u00e6vn v\u00e6kst i marken opst\u00e5r typisk som et samspil mellem: Men en afg\u00f8rende faktor bliver ofte [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1088849,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[10],"tags":[],"class_list":["post-1088965","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landbrug"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Uj\u00e6vn v\u00e6kst i marken \u2013 et klassisk problem - ProFertilizer<\/title>\n<meta name=\"description\" content=\"Oplever du uj\u00e6vn v\u00e6kst i marken? 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