{"id":172455,"date":"2022-06-21T08:27:46","date_gmt":"2022-06-21T08:27:46","guid":{"rendered":"https:\/\/blog.hannaservice.eu\/kako-testirati-elektricnu-vodljivost-ec-u-tlu-potpuni-vodic\/"},"modified":"2022-10-04T19:25:23","modified_gmt":"2022-10-04T19:25:23","slug":"kako-testirati-elektricnu-vodljivost-ec-u-tlu-potpuni-vodic","status":"publish","type":"post","link":"https:\/\/blog.hannaservice.eu\/hr\/kako-testirati-elektricnu-vodljivost-ec-u-tlu-potpuni-vodic\/","title":{"rendered":"Kako testirati elektri\u010dnu vodljivost (EC) u tlu: Potpuni vodi\u010d"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\t\t\tBiljke trebaju puno sunca, zraka, vode i hranjivih tvari za rast. Ali kako mo\u017eete osigurati da va\u0161e biljke imaju dovoljno hranjivih tvari? Mjerenje razli\u010ditih aspekata tla mo\u017ee vam to\u010dno re\u0107i \u0161to vam je potrebno i \u0161to vam nedostaje te pomo\u0107i u poticanju jakih i zdravih biljaka.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tIspitivanje pH vrijednosti, sadr\u017eaja vlage i temperature va\u0161eg tla dobar su po\u010detak za zdravo tlo. Pra\u0107enje fosfata, nitrata, kalcija i kalija primarne su komponente rasta biljaka. Potrebne su i druge sekundarne hranjive tvari.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tJedan od na\u010dina za pra\u0107enje svih tih hranjivih tvari je testiranje elektri\u010dne vodljivosti va\u0161eg tla. Elektri\u010dna vodljivost mo\u017ee vam re\u0107i trebate li vi\u0161e hranjivih tvari ili ih imate previ\u0161e. To \u0107e vam u\u0161tedjeti vrijeme i novac prilikom uzgoja biljaka.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\u0160to je elektri\u010dna vodljivost?\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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\n\t\t\t\t\t\t\t\t\tElektri\u010dna vodljivost (EC) mjeri koliko dobro tvar mo\u017ee prenijeti elektri\u010dnu struju. Male nabijene \u010destice, zvane ioni, poma\u017eu u preno\u0161enju elektri\u010dnog naboja kroz tvar. Ti ioni mogu biti pozitivno ili negativno nabijeni. \u0160to je vi\u0161e iona dostupno, to je ve\u0107a vodljivost; manje iona bi rezultiralo manjom vodljivo\u0161\u0107u. EC se obi\u010dno izra\u017eava u miliSiemens po centimetru (mS\/cm).\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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\n\t\t\t\t\t\t\t\t\tUkupno otopljene krutine (TDS)\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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\n\t\t\t\t\t\t\t\t\tUkupna otopljena krutina (TDS) je koli\u010dina otopljenih tvari u otopini. Ovo mjerenje o\u010ditava sve otopljene anorganske i organske tvari u teku\u0107ini. Rezultati ovog o\u010ditanja prikazuju se kao miligrami po litri (mg\/L), dijelovi na milijun (ppm), grami po litri (g\/L) ili dijelovi na tisu\u0107u (ppt).\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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\n\t\t\t\t\t\t\t\t\tMjerenje TDS-a je dug proces. Prvo ekstrahirate svu vodu iz uzorka tla, zatim isparite vodu i izva\u017eite preostali ostatak nakon isparavanja. Mnogo je lak\u0161e izmjeriti elektri\u010dnu vodljivost tvari, a zatim pretvoriti o\u010ditanje u TDS s faktorom pretvorbe. Trik je u tome da provjerite koristite li ispravan faktor konverzije!\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tPrilikom odabira faktora pretvorbe treba imati na umu da sve otopljene krute tvari ne provode elektri\u010dnu energiju. Na primjer, ako ste izmjerili vodljivost \u010da\u0161e vode, a zatim dodali kuhinjsku sol, vodljivost \u0107e porasti. Ali, ako uzmete tu istu \u0161alicu vode, izmjerite vodljivost, a zatim dodate \u0161e\u0107er, vodljivost ne bi bila pogo\u0111ena.\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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\n\t\t\t\t\t\t\t\t\tTo je zato \u0161to se kuhinjska sol raspada na nabijene ione kada se stavi u otopinu. \u0160e\u0107er se otapa, ali se ne raspada na nabijene ione. Me\u0111utim, ako biste izmjerili TDS dviju \u010da\u0161a vode, na njih bi utjecao dodatak soli ili \u0161e\u0107era.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tNaj\u010de\u0161\u0107i faktori konverzije izme\u0111u EC i TDS su 0,5 i 0,7. Faktor pretvorbe 0,5 temelji se na tome kako se EC i TDS odnose na natrijev klorid. Faktor pretvorbe 0,7 temelji se na tome kako se EC i TDS odnose na smjesu natrijevog sulfata, natrijevog bikarbonata i natrijevog klorida. Da biste koristili faktor konverzije, jednostavno pomno\u017eite svoje o\u010ditanje EC s faktorom pretvorbe da biste izra\u010dunali TDS.\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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Primjer
\nkonverzija
Tablica<\/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

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\n\t\t\t\t\t\t\t\t\tStvari koje utje\u010du
\nElektri\u010dna vodljivost tla\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
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\n\t\t\t\t\t\t\t\t\tMnoge stvari mogu utjecati na elektri\u010dnu vodljivost va\u0161eg tla. Naj\u010de\u0161\u0107i \u010dimbenici su temperatura, vrsta tla i njegova vla\u017enost, zaslanjenost, navodnjavanje i gnojiva te dubina tla.\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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\n\t\t\t\t\t\t\t\t\tTemperaturne fluktuacije\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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\n\t\t\t\t\t\t\t\t\tTemperatura zraka, vode i tla utjecat \u0107e na va\u0161a o\u010ditanja elektri\u010dne vodljivosti. Zapamtite da EC tla uklju\u010duje mjerenje iona u uzorku. Ti se ioni jako uzbude kada temperatura postane toplija, pa poskakuju i imaju ve\u0107u aktivnost.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tVe\u0107a aktivnost zna\u010di da su ioni bolje sposobni provoditi elektri\u010dnu struju. Dakle, vodljivost tla se pove\u0107ava. Kako se temperature hlade, ioni se smiruju i manje se kre\u0107u. Manja aktivnost zna\u010di da ioni te\u017ee prenose elektri\u010dnu struju. To smanjuje vodljivost tla.\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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\n\t\t\t\t\t\t\t\t\tVrsta tla i razina vlage\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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\n\t\t\t\t\t\t\t\t\tTekstura tla utje\u010de na koli\u010dinu vlage koja je dostupna. To utje\u010de na EC tla. Ioni se vole lijepiti i vezati za druge \u010destice (poput \u010destica u tlu). Kada su svi povezani, ioni mogu biti te\u017ee o\u010ditati. Vlaga, ili voda, poma\u017ee osloboditi ione kako bi se mogli o\u010ditati.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tTekstura tla tako\u0111er utje\u010de na to koliko prostora ima za vodu u tlu. To se zove poroznost; razli\u010dite veli\u010dine \u010destica tla stvaraju razli\u010dite prostore za zrak i vodu.\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
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\n\t\t\t\t\t\t\t\t\tPijesak slabo zadr\u017eava vlagu pa ima ni\u017eu vodljivost. Muljevito tlo, sli\u010dno teksturi mokrom mulju na obali rijeke, ima srednju baznu vodljivost. Ova vrsta tla mo\u017ee relativno dobro zadr\u017eati vodu.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tTla bogata glinom imaju ve\u0107u vodljivost zbog toga koliko dobro mogu zadr\u017eati vlagu, a ona srednje vodljivosti imaju najve\u0107i prinos usjeva. Oni su u stanju zadr\u017eati dovoljno vode, a istovremeno odvode vi\u0161ak.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tJo\u0161 jedno svojstvo koje se odnosi na EC i teksturu tla naziva se kapacitet kationske izmjene (CEC). CEC se odnosi na koli\u010dinu gline i organskih tvari u tlu. Glina ima ve\u0107u elektri\u010dnu vodljivost, pa \u0161to je ve\u0107i CEC, to je ve\u0107a vodljivost.\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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\n\t\t\t\t\t\t\t\t\tNavodnjavanje i gnojiva\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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\n\t\t\t\t\t\t\t\t\tLjudi obi\u010dno misle samo o morima i oceanma kao slanim, ali jeste li znali da i tlo mo\u017ee biti slano? Ove soli mogu predstavljati problem ako je elektri\u010dna vodljivost ili Vrijednost TDS (ukupne otopljene tvari) previsoka.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tSoli su vrlo vodljive i podi\u0107i \u0107e EC va\u0161eg tla. Voda koja se koristi za navodnjavanje usjeva izravno \u0107e utjecati na kvalitetu tla pove\u0107anjem ili razrje\u0111ivanjem dostupnih soli i hranjivih tvari. To zauzvrat utje\u010de na elektri\u010dnu vodljivost.\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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\n\t\t\t\t\t\t\t\t\tPrirodne ki\u0161e razrijedit \u0107e koli\u010dinu soli u blizini korijena biljaka. To poma\u017ee sprije\u010diti biljku da se “spali” od vi\u0161ka soli i hranjivih tvari. To zna\u010di da je korijenje biljke u biti za\u010depljeno solima i hranjivim tvarima. Oni postaju nesposobni apsorbirati soli, \u0161to mo\u017ee usporiti njihov rast.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tAko voda za navodnjavanje ima visok sadr\u017eaj soli, mo\u017ee se akumulirati u poljima, pove\u0107avaju\u0107i slanost i elektri\u010dnu vodljivost. Ve\u0107ina usjevnih polja smatra se dobrim za sadnju ako EC ne prelazi 4 dS\/m. Me\u0111utim, taj \u0107e broj varirati ovisno o usjevima koji \u0107e se saditi.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tDodavanje gnojiva dobar je na\u010din za poticanje usjeva da postignu optimalan rast. Ipak, mogu\u0107e je imati previ\u0161e, \u010dak i dobrih stvari. Gnojiva unose hranjive tvari i soli u tlo. Ovi ioni \u0107e pripisati ve\u0107u elektri\u010dnu vodljivost tla. Va\u017eno je voditi ra\u010duna o elektri\u010dnoj vodljivosti va\u0161eg tla. Dodatkom previ\u0161e gnojiva mo\u017eete pove\u0107ati salinitet i EC iznad sigurnih granica.\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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\n\t\t\t\t\t\t\t\t\tDubina tla\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tPosljednje, ali ne i najmanje va\u017eno, dubina tla mo\u017ee izravno utjecati na njegovu elektri\u010dnu vodljivost. Biljke mogu rasti samo u gornjem sloju tla, nutrijentima bogatom gornjem sloju tla. Ako je temeljna stijena ili glina preblizu povr\u0161ini, to mo\u017ee pove\u0107ati elektri\u010dnu vodljivost tla. Va\u017eno je uzeti u obzir kakvo je zemlji\u0161te oko (i ispod!) podru\u010dja za sadnju.\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
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\n\t\t\t\t\t\t\t\t\tpH tla i elektri\u010dna vodljivost EC\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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\n\t\t\t\t\t\t\t\t\tKada su pH tla i elektri\u010dna vodljivost va\u0161eg tla u interakciji, doga\u0111aju se zanimljive stvari. pH va\u0161eg tla govori vam koliko je bazi\u010dno ili kiselo, \u0161to mo\u017ee utjecati na rezultate elektri\u010dne vodljivosti.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tpH je tako\u0111er mjerenje iona, ali specifi\u010dnih iona. Pozitivno nabijeni vodikovi ioni uzrokuju kiselost tvari, dok negativno nabijeni hidroksilni ioni uzrokuju da tvar bude bazi\u010dnija. Kako ti ioni nose naboje, mogu nositi i elektri\u010dnu energiju.\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
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\n\t\t\t\t\t\t\t\t\t\u0160to je ne\u0161to kiselije ili bazi\u010dno, to je vi\u0161e iona. \u0160to je vi\u0161e iona, to je ve\u0107a elektri\u010dna vodljivost. Stoga, \u0161to je va\u0161e tlo kiselije ili bazi\u010dno, to \u0107e EC biti ve\u0107i. \u0160to je va\u0161 pH bli\u017ei neutralnom, to \u0107e manje utjecati na elektri\u010dnu vodljivost va\u0161eg tla.\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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\n\t\t\t\t\t\t\t\t\tZa\u0161to biste trebali testirati Soil EC\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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\n\t\t\t\t\t\t\t\t\tTestiranje va\u0161eg tla je sve u tome da provjerite jesu li hranjive tvari uravnote\u017eene. Mjerenje pH vrijednosti tla daje vam predod\u017ebu o tome koliko su hranjive tvari dostupne, dok EC pokazuje koliko ih zapravo ima. Zapamtite da je EC dobar u mjerenju snage iona u tlu. To vam poma\u017ee da pratite hranjive tvari koje su dostupne va\u0161im biljkama.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tPostoji visoka korelacija boljeg prinosa usjeva s kori\u0161tenjem karata elektri\u010dne vodljivosti tla. Poput topografskih karata, postoje karte koje prikazuju EZ razli\u010ditih geografskih podru\u010dja. Mo\u017eete izraditi vlastitu kartu EC; testirati EC razli\u010ditih podru\u010dja i ucrtati ga na kartu.\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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\n\t\t\t\t\t\t\t\t\tBiljke imaju razli\u010dite tolerancije na otopljene soli i koncentraciju hranjivih tvari. Biljke kao \u0161to su gra\u0161ak i grah vrlo su osjetljive na soli talo\u017eene u tlu (EC mora biti ispod 2 mS\/cm). P\u0161enica i raj\u010dica imaju umjerenu toleranciju na ve\u0107u vodljivost. Pamuk, \u0161pinat i \u0161e\u0107erna repa primjeri su biljaka s vrlo visokim EC tolerancijama; tla za ove biljke mo\u017ee i\u0107i do 16 mS\/cm prije nego \u0161to o\u0161teti prinos usjeva.* Va\u017eno je uravnote\u017eiti EC va\u0161eg tla kako biste promicali optimalno zdravlje biljaka.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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*<\/strong> Ovo se navodi iz studije koja je mjerila EC kroz 1:1 i 1:5 zasi\u0107eni ekstrakt tla.<\/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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\n\t\t\t\t\t\t\t\t\tOdabir EC metode ispitivanja\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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\n\t\t\t\t\t\t\t\t\tPostoji nekoliko dostupnih metoda za ispitivanje elektri\u010dne vodljivosti va\u0161eg tla. Mo\u017eete testirati pornu vodu (vodu koja se nalazi u tlu), ukupnu ili nasipnu vodljivost tla, ili mo\u017eete napraviti ka\u0161u za ispitivanje vodljivosti tla.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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Hanna savjet:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Prilikom mjerenja EC u tlu, mjerite tik uz biljke kao i dalje. Vlaga, hranjive tvari i pH mogu se uvelike razlikovati na zasa\u0111enom podru\u010dju. To zna\u010di malo vi\u0161e posla, ali \u0107ete cijeniti \u0161to mo\u017eete dobiti rezultate koji bolje predstavljaju va\u0161e podru\u010dje sadnje.<\/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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HI98331<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tEC Tester Soil Test\u2122 za direktno mjerenje u tlu<\/strong>\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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\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tKUPI<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\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\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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Soil Test\u2122 Direct Soil EC tester – HI98331 je robustan i pouzdan tester d\u017eepne veli\u010dine koji nudi brza i to\u010dna o\u010ditanja. Soil Test\u2122 Direct Soil EC Tester – HI98331 sadr\u017ei ubodnu sondu od nehr\u0111aju\u0107eg \u010delika za izravno mjerenje vodljivosti u tlu. S kompaktnom veli\u010dinom, upravljanjem jednom tipkom i automatskom kalibracijom, Soil Test je izvrstan izbor za izravna mjerenja vodljivosti u tlu.<\/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":"

Biljke trebaju puno sunca, zraka, vode i hranjivih tvari za rast. Ali kako mo\u017eete osigurati […]<\/p>\n","protected":false},"author":14,"featured_media":171991,"comment_status":"closed","ping_status":"open","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":[260],"class_list":["post-172455","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-poljoprivreda-hr","tag-ec-hr"],"yoast_head":"\nKako testirati elektri\u010dnu vodljivost (EC) u tlu: Potpuni vodi\u010d - Hanna Instruments Hrvatska<\/title>\n<meta name=\"description\" content=\"Elektri\u010dna vodljivost (EC) mjeri koliko dobro tvar mo\u017ee prenijeti elektri\u010dnu struju. Male nabijene \u010destice, zvane ioni, poma\u017eu u preno\u0161enju elektri\u010dnog naboja kroz tvar. Ti ioni mogu biti pozitivno ili negativno nabijeni. \u0160to je vi\u0161e iona dostupno, to je ve\u0107a vodljivost; manje iona bi rezultiralo manjom vodljivo\u0161\u0107u. 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