{"id":13096,"date":"2021-07-05T19:37:29","date_gmt":"2021-07-05T22:37:29","guid":{"rendered":"https:\/\/mindthegraph.com\/blog\/?p=13096"},"modified":"2023-01-05T14:45:58","modified_gmt":"2023-01-05T17:45:58","slug":"measuring-soil-macronutrients-with-a-tongue","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/da\/male-jord-makronaeringsstoffer-med-en-tunge\/","title":{"rendered":"M\u00e5ling af jordens makron\u00e6ringsstoffer med en tunge"},"content":{"rendered":"

Hvordan m\u00e5ler man makron\u00e6ringsstoffer i jorden?<\/strong><\/h2>\n\n\n\n

Heldigvis er der ingen, der beh\u00f8ver at slikke p\u00e5 jorden for at m\u00e5le n\u00e6ringsindholdet i den.<\/p>\n\n\n\n

Forskere som Dr. Maria L. Braunger<\/a> og Dr. Antonio Riul Jr.<\/a> arbejder p\u00e5 en elektronisk tunge til at g\u00f8re det. Begge forskere udvikler nye strategier og apparater til at h\u00e5ndtere m\u00e5ling af n\u00e6ringsstoffer i jorden.<\/p>\n\n\n\n

Men hvordan fungerer dette apparat, og hvorfor er der et behov for at m\u00e5le jordens n\u00e6ringsstoffer?<\/p>\n\n\n\n

Som Dr. Braunger og Dr. Riul sagde i deres arbejde<\/a>: \"Den stigende globale eftersp\u00f8rgsel p\u00e5 f\u00f8devarer uden at \u00f8ge det produktive areal kr\u00e6ver bedre udnyttelse af landbrugs- og naturressourcer, hvilket indeb\u00e6rer, at udviklingen af bedre v\u00e6rkt\u00f8jer til pr\u00e6cisionslandbrug b\u00f8r undg\u00e5 overdreven brug af pesticider og g\u00f8dning. I denne sammenh\u00e6ng er meget detaljerede oplysninger om jordbundskarakterisering vigtige for jordbundsforvaltning og afgr\u00f8deproduktivitet, n\u00e5r man besk\u00e6ftiger sig med pr\u00e6cisionslandbrug.\"<\/p>\n\n\n\n

Hvad du har brug for at vide<\/h2>\n\n\n\n

N\u00e5r man dyrker gr\u00f8ntsager, er det n\u00f8dvendigt med mineralske n\u00e6ringsstoffer for at sikre afgr\u00f8dernes udvikling.<\/p>\n\n\n\n

Der er to typer mineralske n\u00e6ringsstoffer, mikron\u00e6ringsstoffer og makron\u00e6ringsstoffer, og denne opdeling korrelerer ikke med st\u00f8rre eller mindre n\u00f8dvendighed, men med den m\u00e6ngde, afgr\u00f8den har brug for.<\/p>\n\n\n\n

Tjek ud Mind the Graph Gallery<\/a> for illustrationer relateret til jord. Klik p\u00e5 billedet nedenfor!<\/p>\n\n\n\n

\"illustrationer<\/a><\/figure>\n\n\n\n

En forklaring p\u00e5, at makron\u00e6ringsstoffer er n\u00f8dvendige i store m\u00e6ngder, er, at de spiller en strukturel rolle, er til stede i de sm\u00e5 dele af DNA (deoxyribonukleinsyre) og RNA (ribonukleinsyre), i enzymatisk aktivering og fotosyntese.<\/p>\n\n\n\n

Seks kemiske grundstoffer betragtes som makron\u00e6ringsmineraler: Kv\u00e6lstof (N), fosfor (P), kalium (K), calcium (Ca), magnesium (Mg) og svovl (S).<\/p>\n\n\n\n

Pr\u00e6cisionslandbrug st\u00e5r for at have de rigtige m\u00e6ngder af makron\u00e6ringsstoffer og mikron\u00e6ringsstoffer i jorden, og forfatterne understreger vigtigheden af at bevare en sund jord. <\/p>\n\n\n\n

Denne tilgang til landbruget vil tage alle tilg\u00e6ngelige data i betragtning for at forbedre effektiviteten, produktiviteten og b\u00e6redygtigheden af produktionen i landdistrikterne. Gr\u00f8ntsagerne har forskellige behov, og jorden skal forsyne dem med alle de n\u00e6ringsstoffer, der er n\u00f8dvendige for en sund v\u00e6kst. Men m\u00e6ngden af n\u00e6ringsstoffer er ikke synlig for det menneskelige \u00f8je i jorden, og derfor skal den m\u00e5les. <\/p>\n\n\n\n

Nutidens teknologi m\u00e5ler jordens n\u00e6ringsstoffer ved at sende pr\u00f8ver til et specialiseret laboratorium for langsom og dyr kemisk analyse. Forfatterens elektroniske tunge (e-tongue) er et topmoderne apparat, der inden l\u00e6nge lover en lokal, hurtig og billig analyse.<\/p>\n\n\n\n

Men hvad er en e-tunge, og hvordan smager den p\u00e5 jorden?<\/strong><\/h2>\n\n\n\n

Den menneskelige smagsopfattelse involverer smagsl\u00f8g, der registrerer salt, surt, bittert, s\u00f8dt og umami. Smagsreceptorcellerne i smagsl\u00f8gene er ansvarlige for at reagere med de ioner, der findes i f\u00f8devarerne opl\u00f8st i spyt.<\/p>\n\n\n\n

Cellerne sender en enorm m\u00e6ngde elektrisk information om smagen til hjernen. <\/p>\n\n\n\n

E-tungen er en enhed, der efterligner den menneskelige modpart, og den best\u00e5r generelt af en r\u00e6kke sensorenheder, der simulerer smagsl\u00f8gene. Kort fortalt kan f\u00f8leenhederne, n\u00e5r de neds\u00e6nkes i en v\u00e6ske, m\u00e6rke variationer i det ydre milj\u00f8 gennem \u00e6ndringer i deres elektriske egenskaber.<\/p>\n\n\n\n

Enheden<\/h3>\n\n\n\n

For at m\u00e5le en jordpr\u00f8ve skal jorden opl\u00f8ses i vand og f\u00f8res gennem et array med fire sensorer.<\/p>\n\n\n\n

Pr\u00f8ven fungerer som et dielektrisk medium og sensoren som en parallelpladekondensator. Ioner i pr\u00f8ven, der passerer gennem sensorenheden, \u00e6ndrer impedansen forskelligt, afh\u00e6ngigt af den elektriske karakter af de materialer, der udg\u00f8r hver sensorenhed. <\/p>\n\n\n\n

Forskellen i den elektriske respons genererer et fingeraftryk af den analyserede pr\u00f8ve. De kapacitive impedansdata for en sensor indsamles ved et frekvenssweep mellem 1 Hz og 1 MHz af et sinusformet signal med en amplitude p\u00e5 25 mV.<\/p>\n\n\n\n

Ved at betragte variationen af alle sensorenheder sammen og anvende en matematisk behandling, er det muligt at f\u00e5 et m\u00e5lepunkt for en pr\u00f8ve i et 2D-plot. <\/p>\n\n\n\n

Den n\u00e6ste udfordring<\/h3>\n\n\n\n

Indtil videre har e-tungen m\u00e5ske et kvalitativt svar, og udfordringen i dag er en kvantitativ m\u00e5ling af, hvor meget kalium (for eksempel) der er til stede i en jordpr\u00f8ve. <\/p>\n\n\n\n

Et alternativ er at have en standardjord (f.eks. rig p\u00e5 kalium), og metoden vil sige, hvor langt pr\u00f8ven er fra denne standard og estimere kaliumm\u00e6ngden i jordpr\u00f8ven. At have en standard for hvert makron\u00e6ringsstof g\u00f8r det muligt at kontrollere, om en pr\u00f8ve er for t\u00e6t eller for langt (henholdsvis fattig eller rig) fra hver enkelt.<\/p>\n\n\n\n

\"videnskabsfigur<\/a><\/figure>\n\n\n\n

Ved at have e-tungerespons og dermed kende balancen af n\u00e6ringsstoffer i jorden kan en landmand styre jordkorrektionen ved at v\u00e6lge den rigtige g\u00f8dning i et bestemt omr\u00e5de og dermed reducere spildet ved et blindt valg.<\/p>\n\n\n\n

At reducere spild og forbedre produktiviteten er m\u00e5let med pr\u00e6cisionslandbrug, og med denne enhed \u00f8nsker Dr. Braunger og Dr. Raul at hj\u00e6lpe pr\u00e6cisionslandbrug med en enhed, der er billig, enkel, hurtig og bruges p\u00e5 stedet. Vi h\u00e5ber snart at have e-tunger, der kan hj\u00e6lpe landm\u00e6nd i fremtidens landbrug.<\/p>\n\n\n\n

____________<\/p>\n\n\n\n

Som Dr. Braunger og Dr. Raul hj\u00e6lper landm\u00e6nd, Mind the Graph<\/a> kan hj\u00e6lpe dig med at forberede en opgave eller pr\u00e6sentation med masser af illustrationskategorier, hvor du kan finde alt, hvad du har brug for.<\/p>\n\n\n\n


Og vi er her for at hj\u00e6lpe dig, hvis du har brug for noget andet. Log ind p\u00e5 din konto<\/a> og send os en besked i feltet REQUEST AN ICON.<\/p>","protected":false},"excerpt":{"rendered":"

Hvordan m\u00e5ler man makron\u00e6ringsstoffer i jorden? Heldigvis beh\u00f8ver ingen at slikke p\u00e5 jorden for at m\u00e5le de n\u00e6ringsstoffer, der findes i den. Forskere som Dr. Maria L. Braunger og Dr. Antonio Riul Jr arbejder p\u00e5 en elektronisk tunge, der kan g\u00f8re det. Begge forskere udvikler nye strategier og apparater til at h\u00e5ndtere m\u00e5ling af n\u00e6ringsstoffer p\u00e5 [...].<\/p>","protected":false},"author":18,"featured_media":13099,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[959,28],"tags":[554],"yoast_head":"\nMeasuring Soil Macronutrients With a Tongue - MTG<\/title>\n<meta name=\"description\" content=\"Scientists are working on an electronic tongue or e-tongue as a new strategy to deal with macronutrients measurement on the soil.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mindthegraph.com\/blog\/da\/merjenje-podnebnih-makronutrientov-s-jezikom\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Measuring Soil Macronutrients With a Tongue\" \/>\n<meta property=\"og:description\" content=\"Scientists are working on an electronic tongue or e-tongue as a new strategy to deal with macronutrients measurement on the soil.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mindthegraph.com\/blog\/da\/merjenje-podnebnih-makronutrientov-s-jezikom\/\" \/>\n<meta property=\"og:site_name\" content=\"Mind the Graph Blog\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-05T22:37:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-05T17:45:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2021\/07\/post-measuring-soil.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bruna Soldera\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Measuring Soil Macronutrients With a Tongue\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2021\/07\/post-measuring-soil-twitter.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bruna Soldera\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Measuring Soil Macronutrients With a Tongue - 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