{"id":2841,"date":"2025-04-02T07:47:35","date_gmt":"2025-04-02T07:47:35","guid":{"rendered":"https:\/\/paul-tech.com\/?p=2841"},"modified":"2026-03-12T15:39:42","modified_gmt":"2026-03-12T15:39:42","slug":"kevatlannoitus-ja-paul-techin-mittausasema-miksi-nitraatin-no3-seuranta-on-tarkeaa","status":"publish","type":"post","link":"https:\/\/paul-tech.com\/fi\/kevatlannoitus-ja-paul-techin-mittausasema-miksi-nitraatin-no3-seuranta-on-tarkeaa\/","title":{"rendered":"Kev\u00e4tlannoitus ja Paul-Techin mittausasema: Miksi nitraatin (NO3) seuranta on t\u00e4rke\u00e4\u00e4?"},"content":{"rendered":"<div class=\"wp-block-post-date\"><time datetime=\"2025-04-02T07:47:35+00:00\">April 2, 2025<\/time><\/div>\n\n\n<ul class=\"wp-block-social-links is-layout-flex wp-block-social-links-is-layout-flex\"><li class=\"wp-social-link wp-social-link-facebook  wp-block-social-link\"><a rel=\"noopener nofollow\" target=\"_blank\" href=\"https:\/\/www.facebook.com\/PaulTechEstonia\" 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C21,3.582,20.418,3,19.7,3z M8.339,18.338H5.667v-8.59h2.672V18.338z M7.004,8.574c-0.857,0-1.549-0.694-1.549-1.548 c0-0.855,0.691-1.548,1.549-1.548c0.854,0,1.547,0.694,1.547,1.548C8.551,7.881,7.858,8.574,7.004,8.574z M18.339,18.338h-2.669 v-4.177c0-0.996-0.017-2.278-1.387-2.278c-1.389,0-1.601,1.086-1.601,2.206v4.249h-2.667v-8.59h2.559v1.174h0.037 c0.356-0.675,1.227-1.387,2.526-1.387c2.703,0,3.203,1.779,3.203,4.092V18.338z\"><\/path><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">LinkedIn<\/span><\/a><\/li>\n\n<li class=\"wp-social-link wp-social-link-instagram  wp-block-social-link\"><a rel=\"noopener nofollow\" target=\"_blank\" href=\"https:\/\/www.instagram.com\/paultech_esoil\/\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" focusable=\"false\"><path 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c-0.5,0.5-0.808,1.002-1.038,1.594C3.25,6.677,3.098,7.331,3.054,8.289C3.01,9.249,3,9.556,3,12c0,2.444,0.01,2.751,0.054,3.711 c0.044,0.958,0.196,1.612,0.418,2.185c0.23,0.592,0.538,1.094,1.038,1.594c0.5,0.5,1.002,0.808,1.594,1.038 c0.572,0.222,1.227,0.375,2.185,0.418C9.249,20.99,9.556,21,12,21s2.751-0.01,3.711-0.054c0.958-0.044,1.612-0.196,2.185-0.418 c0.592-0.23,1.094-0.538,1.594-1.038c0.5-0.5,0.808-1.002,1.038-1.594c0.222-0.572,0.375-1.227,0.418-2.185 C20.99,14.751,21,14.444,21,12s-0.01-2.751-0.054-3.711c-0.044-0.958-0.196-1.612-0.418-2.185c-0.23-0.592-0.538-1.094-1.038-1.594 c-0.5-0.5-1.002-0.808-1.594-1.038c-0.572-0.222-1.227-0.375-2.185-0.418C14.751,3.01,14.444,3,12,3L12,3z M12,7.378 c-2.552,0-4.622,2.069-4.622,4.622S9.448,16.622,12,16.622s4.622-2.069,4.622-4.622S14.552,7.378,12,7.378z M12,15 c-1.657,0-3-1.343-3-3s1.343-3,3-3s3,1.343,3,3S13.657,15,12,15z M16.804,6.116c-0.596,0-1.08,0.484-1.08,1.08 s0.484,1.08,1.08,1.08c0.596,0,1.08-0.484,1.08-1.08S17.401,6.116,16.804,6.116z\"><\/path><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">Instagram<\/span><\/a><\/li>\n\n<li class=\"wp-social-link wp-social-link-youtube  wp-block-social-link\"><a rel=\"noopener nofollow\" target=\"_blank\" href=\"https:\/\/www.youtube.com\/@paul-tech_esoil\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M21.8,8.001c0,0-0.195-1.378-0.795-1.985c-0.76-0.797-1.613-0.801-2.004-0.847c-2.799-0.202-6.997-0.202-6.997-0.202 h-0.009c0,0-4.198,0-6.997,0.202C4.608,5.216,3.756,5.22,2.995,6.016C2.395,6.623,2.2,8.001,2.2,8.001S2,9.62,2,11.238v1.517 c0,1.618,0.2,3.237,0.2,3.237s0.195,1.378,0.795,1.985c0.761,0.797,1.76,0.771,2.205,0.855c1.6,0.153,6.8,0.201,6.8,0.201 s4.203-0.006,7.001-0.209c0.391-0.047,1.243-0.051,2.004-0.847c0.6-0.607,0.795-1.985,0.795-1.985s0.2-1.618,0.2-3.237v-1.517 C22,9.62,21.8,8.001,21.8,8.001z M9.935,14.594l-0.001-5.62l5.404,2.82L9.935,14.594z\"><\/path><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">YouTube<\/span><\/a><\/li>\n\n<li class=\"wp-social-link wp-social-link-tiktok  wp-block-social-link\"><a rel=\"noopener nofollow\" target=\"_blank\" href=\"https:\/\/www.tiktok.com\/@paultech_soil\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 32 32\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M16.708 0.027c1.745-0.027 3.48-0.011 5.213-0.027 0.105 2.041 0.839 4.12 2.333 5.563 1.491 1.479 3.6 2.156 5.652 2.385v5.369c-1.923-0.063-3.855-0.463-5.6-1.291-0.76-0.344-1.468-0.787-2.161-1.24-0.009 3.896 0.016 7.787-0.025 11.667-0.104 1.864-0.719 3.719-1.803 5.255-1.744 2.557-4.771 4.224-7.88 4.276-1.907 0.109-3.812-0.411-5.437-1.369-2.693-1.588-4.588-4.495-4.864-7.615-0.032-0.667-0.043-1.333-0.016-1.984 0.24-2.537 1.495-4.964 3.443-6.615 2.208-1.923 5.301-2.839 8.197-2.297 0.027 1.975-0.052 3.948-0.052 5.923-1.323-0.428-2.869-0.308-4.025 0.495-0.844 0.547-1.485 1.385-1.819 2.333-0.276 0.676-0.197 1.427-0.181 2.145 0.317 2.188 2.421 4.027 4.667 3.828 1.489-0.016 2.916-0.88 3.692-2.145 0.251-0.443 0.532-0.896 0.547-1.417 0.131-2.385 0.079-4.76 0.095-7.145 0.011-5.375-0.016-10.735 0.025-16.093z\" \/><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">TikTok<\/span><\/a><\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1000\" src=\"https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/03\/472391491_1133905071800638_4683449280181272686_n-2-1024x1000.jpg\" alt=\"\" class=\"wp-image-2749\" srcset=\"https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/03\/472391491_1133905071800638_4683449280181272686_n-2-1024x1000.jpg 1024w, https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/03\/472391491_1133905071800638_4683449280181272686_n-2-300x293.jpg 300w, https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/03\/472391491_1133905071800638_4683449280181272686_n-2-768x750.jpg 768w, https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/03\/472391491_1133905071800638_4683449280181272686_n-2.jpg 1199w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Kev\u00e4t on ratkaisevan t\u00e4rke\u00e4 ajankohta viljelyss\u00e4 \u2013 jokaisella p\u00e4\u00e4t\u00f6ksell\u00e4 on vaikutusta koko kasvukauden satoon. Yksi t\u00e4rkeimmist\u00e4 tekij\u00f6ist\u00e4 kev\u00e4tlannoituksessa on oikea ajoitus: lannoituksen kohdentaminen oikeaan aikaan auttaa hy\u00f6dynt\u00e4m\u00e4\u00e4n maaper\u00e4n kosteuden tehokkaasti ja varmistaa, ett\u00e4 ravinteet ovat kasvien k\u00e4ytett\u00e4viss\u00e4 juuri silloin, kun niit\u00e4 eniten tarvitaan.<\/p>\n\n\n\n<p>Mutta miten m\u00e4\u00e4ritell\u00e4\u00e4n oikea aika ja m\u00e4\u00e4r\u00e4 lannoitukselle? Miten voidaan luotettavasti arvioida nitraattitypen (NO3-N) m\u00e4\u00e4r\u00e4\u00e4 maassa ja p\u00e4\u00e4tt\u00e4\u00e4, tarvitaanko lis\u00e4lannoitusta? T\u00e4ss\u00e4 kohtaa Paul-Techin mittausasema nousee korvaamattomaksi apuv\u00e4lineeksi \u2013 se tarjoaa reaaliaikaista tietoa maaper\u00e4n ravinnetilanteesta ja prosesseista.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Miten kasvit ottavat typpe\u00e4?<\/strong><\/h2>\n\n\n\n<p>Typpi on yksi kasvien t\u00e4rkeimmist\u00e4 ravinteista, ja ne ottavat sit\u00e4 p\u00e4\u00e4asiassa nitraatti-ioneina (NO3-) maaliuoksesta. NO3-N on eritt\u00e4in liikkuvaa ja nopeasti vaikuttavaa \u2013 se tulee joko kasvien k\u00e4ytt\u00f6\u00f6n tai huuhtoutuu veden mukana syvemm\u00e4lle maaper\u00e4\u00e4n.<\/p>\n\n\n\n<p>Kasvukauden aikana Paul-Techin ravinneindikaattoreissa tapahtuvat muutokset liittyv\u00e4t suurelta osin NO3-N:n m\u00e4\u00e4r\u00e4\u00e4n. Nitraatin seuranta auttaa arvioimaan, kuinka paljon liuennutta ja kasvien k\u00e4ytett\u00e4viss\u00e4 olevaa typpe\u00e4 maassa on, kuinka paljon siit\u00e4 on kasvien ottamaa ja kuinka paljon on huuhtoutunut \u2013 n\u00e4m\u00e4 tiedot esitet\u00e4\u00e4n joko mg\/kg tai kg\/ha yksik\u00f6iss\u00e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Ammoniumtyppi maassa<\/strong><\/h2>\n\n\n\n<p>Ammoniumtyppi esiintyy maassa NH4+-ioneina, jotka ovat selv\u00e4sti v\u00e4hemm\u00e4n liikkuvia kuin nitraatit ja sitoutuvat maahiukkasiin. T\u00e4m\u00e4n vuoksi ammoniumtyppi ei juurikaan vaikuta maaper\u00e4n s\u00e4hk\u00f6njohtavuuteen.<\/p>\n\n\n\n<p>Ammoniumtyppi \u2013 kuten my\u00f6s orgaaninen typpi \u2013 muuttuu kasvien k\u00e4ytt\u00f6\u00f6n sopivaksi vasta nitrifikaation kautta. T\u00e4ss\u00e4 bakteerien aikaansaamassa prosessissa NH4+ muuttuu NO3-muotoon. T\u00e4m\u00e4 muutos n\u00e4kyy suoraan Paul-Techin ravinneindikaattoreissa, ja muodostuvan nitraatin m\u00e4\u00e4r\u00e4\u00e4 (kg\/ha) voidaan seurata mittausasemalta saatavien ravinnek\u00e4yrien avulla.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Mik\u00e4 on alkuper\u00e4inen ravinnetaso (AR)?<\/strong><\/h2>\n\n\n\n<p>Alkuper\u00e4inen ravinnetaso (AR) tarkoittaa maassa olevien liuenneiden ravinteiden m\u00e4\u00e4r\u00e4\u00e4 ennen kev\u00e4tlannoitusta. Tyypillisesti t\u00e4m\u00e4 taso ei sis\u00e4ll\u00e4 nitraattityppe\u00e4 (NO3-N).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Mit\u00e4 alkuper\u00e4inen ravinnetaso kertoo?<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Se mitataan varhain kev\u00e4\u00e4ll\u00e4 ja toimii vertailupohjana lannoitusp\u00e4\u00e4t\u00f6ksille.<\/li>\n\n\n\n<li>Se kuvaa kasveille k\u00e4ytt\u00f6kelpoisten ravinteiden m\u00e4\u00e4r\u00e4\u00e4 ilman liikkuvaa typpe\u00e4 (NO3-N).<\/li>\n\n\n\n<li>Sen avulla voidaan seurata typen kulutusta, huuhtoutumista ja ravinteiden liikett\u00e4 maakerroksissa.<\/li>\n\n\n\n<li>Alkuper\u00e4inen ravinnetaso luo perustan koko kasvukauden ravinneseurannalle ja lannoitusstrategialle.<\/li>\n\n\n\n<li>Kasvukauden lopulla mitattu liikkuvan typen m\u00e4\u00e4r\u00e4 auttaa tekem\u00e4\u00e4n p\u00e4\u00e4t\u00f6ksi\u00e4 esimerkiksi ker\u00e4\u00e4j\u00e4kasvien ja syysviljojen lannoituksesta seuraavalle vuodelle.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>AR-lukeman merkitys lannoitusp\u00e4\u00e4t\u00f6ksiss\u00e4<\/strong><\/h2>\n\n\n\n<p>Paul-Techin mittausasema m\u00e4\u00e4ritt\u00e4\u00e4 alkuper\u00e4isen ravinnetason kev\u00e4\u00e4ll\u00e4 ennen kasvukauden alkua. T\u00e4m\u00e4 kertoo, kuinka paljon kasvien k\u00e4ytt\u00f6\u00f6n soveltuvia ravinteita maassa on \u2013 ilman lis\u00e4tty\u00e4 nitraattityppe\u00e4.<\/p>\n\n\n\n<p>T\u00e4m\u00e4 tieto mahdollistaa t\u00e4sm\u00e4llisemm\u00e4t lannoitusp\u00e4\u00e4t\u00f6kset, mik\u00e4 v\u00e4hent\u00e4\u00e4 liikak\u00e4yt\u00f6n riski\u00e4 ja tukee sadon maksimointia.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Ravinnedynamiikan seuranta<\/strong><\/h2>\n\n\n\n<p>Paul-Techin mittausasemat ker\u00e4\u00e4v\u00e4t jatkuvaa dataa maaper\u00e4n ravinnetilasta. Anturit eri syvyyksill\u00e4 paljastavat, miten ravinnevarastot muuttuvat ja kuinka ravinteet huuhtoutuvat \u2013 n\u00e4in viljelij\u00e4 saa syv\u00e4llist\u00e4 ymm\u00e4rryst\u00e4 pellon toiminnasta ja voi suunnitella lannoitukset tarkemmin.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Typen otto ja huuhtoutuminen<\/strong><\/h2>\n\n\n\n<p>Typpi on yksi maaper\u00e4n liikkuvimmista ravinteista. Syksyll\u00e4 levitetty typpi joko imeytyy kasveihin tai huuhtoutuu alempiin maakerroksiin. Paul-Techin mittausasemat tarjoavat ty\u00f6kalun typen liikkeiden seurantaan \u2013 erityisen t\u00e4rke\u00e4\u00e4 t\u00e4m\u00e4 on esimerkiksi lietteen k\u00e4yt\u00f6n yhteydess\u00e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Tietoon perustuvat lannoitusp\u00e4\u00e4t\u00f6kset<\/strong><\/h2>\n\n\n\n<p>Paul-Techin ravinneindikaattorit antavat kokonaiskuvan kaikista maaliuoksessa olevista ravinteista kulloisellakin hetkell\u00e4. Eri ravinteiden vaikutus n\u00e4ihin indikaattoreihin m\u00e4\u00e4r\u00e4ytyy niiden osallisuudesta massavirtaperusteiseen ravinteiden ottoon.<\/p>\n\n\n\n<p>Alkuper\u00e4inen ravinnetaso (AR) kertoo maan hedelm\u00e4llisyydest\u00e4 ja toimii vakaana vertailukohtana koko kasvukauden ajan \u2013 t\u00e4m\u00e4 arvo ei sis\u00e4ll\u00e4 liikkuvaa NO3-N:\u00e4\u00e4.<\/p>\n\n\n\n<p>Kasvukauden aikana tapahtuvat muutokset ravinnetilassa johtuvat p\u00e4\u00e4asiassa nitraattitypen pitoisuuden vaihtelusta, lannoitteiden liukenemisesta, kasvien ravinteiden otosta ja huuhtoutumisesta. Paul-Techin ravinnek\u00e4yr\u00e4t mahdollistavat NO3-N:n tarkan seurannan sek\u00e4 mg\/kg ett\u00e4 kg\/ha yksik\u00f6iss\u00e4. Esimerkiksi sulfaatteja (SO4) sis\u00e4lt\u00e4vien lannoitteiden vaikutus n\u00e4kyy my\u00f6s n\u00e4iss\u00e4 mittauksissa.<\/p>\n\n\n\n<p>Reaaliaikainen maaper\u00e4data mahdollistaa \u00e4lykk\u00e4\u00e4t, tietoon perustuvat lannoitusp\u00e4\u00e4t\u00f6kset \u2013 ravinteet saadaan oikeaan aikaan, oikeassa m\u00e4\u00e4r\u00e4ss\u00e4 ja juuri silloin, kun kasvit niit\u00e4 eniten tarvitsevat.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kev\u00e4t on ratkaisevan t\u00e4rke\u00e4 ajankohta viljelyss\u00e4 \u2013 jokaisella p\u00e4\u00e4t\u00f6ksell\u00e4 on vaikutusta koko kasvukauden satoon. Yksi t\u00e4rkeimmist\u00e4 tekij\u00f6ist\u00e4 kev\u00e4tlannoituksessa on oikea&#8230;<\/p>\n","protected":false},"author":3,"featured_media":2749,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-2841","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-fi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kev\u00e4tlannoitus ja Paul-Techin mittausasema: Miksi nitraatin (NO3) seuranta on t\u00e4rke\u00e4\u00e4? - Paul-Tech<\/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:\/\/paul-tech.com\/fi\/kevatlannoitus-ja-paul-techin-mittausasema-miksi-nitraatin-no3-seuranta-on-tarkeaa\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kev\u00e4tlannoitus ja Paul-Techin mittausasema: Miksi nitraatin (NO3) seuranta on t\u00e4rke\u00e4\u00e4? - Paul-Tech\" \/>\n<meta property=\"og:description\" content=\"Kev\u00e4t on ratkaisevan t\u00e4rke\u00e4 ajankohta viljelyss\u00e4 \u2013 jokaisella p\u00e4\u00e4t\u00f6ksell\u00e4 on vaikutusta koko kasvukauden satoon. 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