{"id":154979,"date":"2020-06-29T11:10:03","date_gmt":"2020-06-29T11:10:03","guid":{"rendered":"http:\/\/blog.hannaservice.eu\/mjerenje-hranjivih-sastojaka-u-tlu\/"},"modified":"2022-10-07T13:23:14","modified_gmt":"2022-10-07T13:23:14","slug":"mjerenje-hranjivih-sastojaka-u-tlu","status":"publish","type":"post","link":"https:\/\/blog.hannaservice.eu\/hr\/mjerenje-hranjivih-sastojaka-u-tlu\/","title":{"rendered":"Mjerenje hranjivih sastojaka u tlu"},"content":{"rendered":"\t\t
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Odr\u017eavanje odgovaraju\u0107e ravnote\u017ee ovih hranjivih sastojaka u razli\u010ditim fazama razvoja biljke klju\u010dni je sastojak u primjeni u poljoprivredi i mo\u017ee se na\u0107i na raznim pakiranjima gnojiva koja su ozna\u010dena kao NPK.<\/p>\n\t\t\t\t\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

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Nutrijenti\u00a0dostupnost je esencijalna karakteristika tla<\/strong>\u00a0koja bi se trebala kontinuirano pratiti u poljoprivrednim aplikacijama. Najva\u017enija hranjiva sredstva potrebna za optimalan rast biljaka su\u00a0du\u0161ik (N), fosfor (P) i kalij (K).<\/strong>\u00a0Du\u0161ik je potreban za fazu rasta vegetativnog bilja, jer je primarni element za proteine, DNK i hormone. Faza rasta karakterizira produljenje stabljike i poja\u010danu\u00a0proizvodnju li\u0161\u0107a.\u00a0Fosfor se nalazi i u DNK i odgovoran je za mnoge fiziolo\u0161ke i biokemijske procese.\u00a0Nadalje, fosfor poti\u010de rast korijena, cvjetanje i potreban je za stvaranje sjemena.\u00a0Naime, biljke preuzimaju fosfor u obliku fosfata, dok kalij biljka preuzima u svom elementarnom obliku.<\/p>\n\t\t\t\t\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

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Kalij se koristi u sintezi proteina i pobolj\u0161ava kvalitetu plodova i cvjetova. Odr\u017eavanje odgovaraju\u0107e ravnote\u017ee ovih hranjivih sastojaka u razli\u010ditim fazama razvoja biljke klju\u010dni je sastojak u primjeni u poljoprivredi i mo\u017ee se na\u0107i na raznim pakiranjima gnojiva koja su ozna\u010dena kao NPK. Na primjer, gnojivo u fazi rasta imat \u0107e visok broj du\u0161ika, dok \u0107e gnojivo za plodove \/ cvatnju imati visok udio fosfora.<\/p>\n\t\t\t\t\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

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Primjena<\/h3>\n

Agronom koji radi u stakleniku kontaktirao je Hanna Instruments tra\u017ee\u0107i na\u010din da izmjeri razli\u010dite hranjive tvari u tlu. Na\u0161\u00a0HI83325 fotometar za analizu hranjivih tvari\u00a0preporu\u010den je s obzirom da je posebno dizajniran za mjerenje najva\u017enijih parametara za rast biljaka. HI83325 mjeri amonijak, nitrate, fosfor i kalij u tri raspona (nizak, srednji i visok). Uz primarne hranjive sastojke, HI83325 mjeri i kalcij, magnezij i sulfat. Kako bi se u\u0161tedio vrijedan prostor za laboratorijski stol, HI83325 se mo\u017ee koristiti kao profesionalni pH mjera\u010d s digitalnim ulazom pH \/ temperature elektrode. Sada se jedan metar mo\u017ee koristiti za fotometrijska i pH mjerenja.<\/p>\n\t\t\t\t\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

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Kupac je bio zadovoljan da je za mjerenje svih parametara potreban samo jedan metar, koji radi ili s isporu\u010denim 12 VDC adapterom ili unutarnjom punjivom baterijom, ograni\u010davaju\u0107i prostor potreban za provo\u0111enje ispitivanja. Kupac je tako\u0111er cijenio \u0161to je mjera\u010d vrlo intuitivan uz jednostavnu navigaciju kroz razli\u010dite parametre koje se mjere i posebne upute za obavljanje svakog testa. Uz pravilnu obradu mjerenja koja se izvode fotometrom vrlo su precizna i omogu\u0107uju bolje upravljanje usjevima utvr\u0111ivanjem trendova kada i koliko gnojiva treba koristiti u razli\u010ditim fazama razvoja. Ovim je trendovima jednostavnije upravljati pomo\u0107u funkcije zapisivanja zapisa unutar mjera\u010da i preuzimanja na PC radi \u010duvanja zapisa pomo\u0107u USB kabela i softvera kompatibilnog s PC HI92000.<\/p>\n\t\t\t\t\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":"

Odr\u017eavanje odgovaraju\u0107e ravnote\u017ee ovih hranjivih sastojaka u razli\u010ditim fazama razvoja biljke klju\u010dni je sastojak u […]<\/p>\n","protected":false},"author":14,"featured_media":4895,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[378],"tags":[],"class_list":["post-154979","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-poljoprivreda-hr"],"yoast_head":"\nMjerenje hranjivih sastojaka u tlu - 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