{"id":154480,"date":"2020-03-02T09:59:30","date_gmt":"2020-03-02T09:59:30","guid":{"rendered":"https:\/\/blog.hannaservice.eu\/zasto-je-kontrola-alkalnosti-i-ph-znacajna-za-rast-biljaka\/"},"modified":"2022-10-10T08:59:10","modified_gmt":"2022-10-10T08:59:10","slug":"zasto-je-kontrola-alkalnosti-i-ph-znacajna-za-rast-biljaka","status":"publish","type":"post","link":"https:\/\/blog.hannaservice.eu\/sr\/zasto-je-kontrola-alkalnosti-i-ph-znacajna-za-rast-biljaka\/","title":{"rendered":"Za\u0161to je kontrola alkalnosti i pH zna\u010dajna za rast biljaka?"},"content":{"rendered":"\t\t
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Alkalnost predstavlja pufersku sposobnost vode ili, jednostavnije re\u010deno, sposobnost vode da neutrali\u0161e kiselinu. \u0160to je vec\u0301a alkalnost, bi\u0107e otpornija i voda na promene pH i bic\u0301e potrebno vi\u0161e kiseline da se smanji ukupna alkalnost i smanji pH. Saznajte vi\u0161e o alkalnosti i kontroli pH u prilogom uzgoja biljaka.<\/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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Kontrola alkalnosti i pH \u2013 osnove<\/h3>\n
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U bilo kojem objektu voda koja te\u010de ka va\u0161im usevima neosporno predstavlja osnovu svih operacija. Najva\u017eniji faktori sposobnosti va\u0161e vode da efikasno obezbe\u0111uje hranjive materije biljkama su pH i alkalnost. Hanna proizvodi najsavremenije sisteme za kontrolu pH i fertilizacije na tr\u017ei\u0161tu koji c\u0301e precizno podesiti pH i alkalnost vode za navodnjavanje \u201cu rezervoaru\u201d ili \u201clinijski\u201d u velikom obimu protoka. Tako se garantuje optimalan rast, maksimalan prinos i efikasna upotreba hranljivih materija koje elimini\u0161u pojavu vi\u0161kova.<\/p>\n

Alkalnost i za\u0161to je ona jednako va\u017ena kao i pH<\/strong><\/p>\n

Alkalnost predstavlja pufersku sposobnost vode ili, jednostavnije re\u010deno, sposobnost vode da neutrali\u0161e kiselinu. \u0160to je vec\u0301a alkalnost, otpornija c\u0301e voda biti na promene pH i bic\u0301e potrebno vi\u0161e kiseline da se smanji ukupna alkalnost i smanji pH. Alkalnost se sastoji od bikarbonata, karbonata i hidroksida kombinovanih sa kalcijumom, magnezijumom ili natrijumom. Alkalnost je izra\u017eena kao ppm ekvivalent kalcijum-karbonata, a visoka koncentracija ppm (CaCO3) ukazuje da je vi\u0161e ovih komponenti prisutno u vodi. pH obi\u010dno raste kako koncentracija raste, ali u zavisnosti od sastava i odnosa sastojaka, pH mo\u017ee varirati izme\u0111u dva uzorka iz razli\u010ditih izvora u osnovi iste alkalnosti. Dakle, va\u017eno da znate ne samo pH va\u0161e vode, vec\u0301 i alkalnost kako biste osigurali optimalno uno\u0161enje hranljivih sastojaka i zdravlje biljaka.<\/p>\n

Kao \u0161to je ranije re\u010deno, kako se povec\u0301ava alkalnost, pH u vodenom toku i rastu\u0107im medijima mo\u017ee porasti. Moguc\u0301e je da se vrlo mala promena pH odra\u017eava povec\u0301anjem alkalnosti. Kako alkalnost raste, raspolo\u017eivost odre\u0111enih hranjivih sastojaka, posebno mikronutrijenata kao \u0161to je gvo\u017e\u0111e i mangan, negativno uti\u010de \u0161to rezultira razli\u010ditim manjkavostima. Dakle, od vitalnog je zna\u010daja da se testiranje alkalnosti sprovede zajedno sa pH da bi se najbolje utvrdilo stanje va\u0161e vode.<\/p>\n

U mnogim slu\u010dajevima je potrebno ubrizgati kiselinu (sumpornu ili fosfornu) u vodu ili koristiti \u0111ubriva koja stvaraju kiselinu. Naj\u010de\u0161c\u0301e kori\u0161\u0107ena, lako dostupna, i najmanje skupa je sumporna kiselina. Koli\u010dina kiseline koju treba ubrizgati treba odrediti na osnovu vrednosti alkalnosti i na kraju optimalnog cilja alkalnosti koji \u017eelite da postignete.<\/p>\n

Nakon \u0161to ste postigli \u017eeljeni nivo alkalnosti (ppm CaCO3) kao rezultat zakiseljavanja, zabele\u017eite pH i koristite tu vrednost kao svoj pH cilj da biste pokrenuli sisteme ubrizgavanja kiseline. Va\u017eno je napomenuti da jednostavno postavljanje pH cilja na 5,8 ili 6,0 bez poznavanja alkalne vrednosti mo\u017eda vam nec\u0301e ostaviti optimalnu alkalnost za apsorpciju hranljivih sastojaka. Zapravo mo\u017eete da saznate, da u nekim slu\u010dajevima, alkalnost va\u0161e vode mo\u017ee biti ispod minimalnog nivoa pri pH od 6,0, a optimalna alkalnost mo\u017ee se nac\u0301i pri vec\u0301em pH, kao \u0161to je 6,2 do 6,4.<\/p>\n

Kori\u0161\u0107enje sistema za reverznu osmozu i efekti ekstremno niske alkalnosti<\/strong><\/p>\n

Mnogi uzgajiva\u010di, posebno hidroponski, koriste sisteme za reverznu osmozu kako bi \u201cpro\u010distili\u201d vodu. Ovi sistemi su veoma efektivni i uklanjaju gotovo sve \u010destice iz vode, ostavljaju\u0107i gotov \u010dist H2O. Kao rezultat CO2\u00a0<\/sub>izlaganjem tokom procesa filtracije stvara se ugljeni\u010dna kiselina ostavljajuc\u0301i vodu da varira u rasponu pH 5 do 6. U 90% primena, pH izme\u0111u 5,7 i 6 se smatra optimalnom za sve vrste biljaka. Savr\u0161eno, zar ne? Me\u0111utim alkalnost vode posle tretmana reverznom osmozom je bukvalno 0 ppm. Izlaganje biljaka vodi sa skoro nepostoje\u0107om alkalno\u0161\u0107u mo\u017ee biti katastrofalno. Voda c\u0301e ispu\u0161tati esencijalne jone i u osnovi c\u0301e nagrizati korenov sistem kao \u0161to bi to u\u010dinili bakarni cevovodi, samo mnogo br\u017ee.<\/p>\n

Pored toga, odre\u0111ena hranjiva i vezana jedinjenja u mediju za rast mogu postati dostupna u toksi\u010dnim koli\u010dinama. Izuzetno niske alkalnosti nemaju vitalne elemente poput kalcijuma, magnezijuma i sulfata, koji su tako\u0111e veoma va\u017eni za zdravlje biljaka. Sre\u0107om ne postoje iskusni uzgajiva\u010di koji bi svoje biljke i \/ ili uzgajali medijum izlo\u017eili \u010distoj vodi pod normalnim uslovima u bilo koje vreme. Me\u0111utim ovo predstavlja savr\u0161en primer kako je potrebno odr\u017eavati ne samo pH vrednost ve\u0107 i nivoe alkalnosti.<\/p>\n

Jo\u0161 mogu\u0107ih razmatranja kontrole pH. Voda sa veoma niskom alkalno\u0161\u0107u je veoma te\u0161ka za kontrolu sa aspekta pH vrednosti. Uzgajiva\u010di, gledajuc\u0301i isklju\u010divo pH vrednost filtrirane vode od RO, pitali su je li moguc\u0301e ubrizgati kiselinu kako bi se pH vode snizio sa 6,2 na 5,8. Sada kada smo razumeli va\u017enu ulogu alkalnosti, sni\u017eavanje pH u ovom konkretnom slu\u010daju u po\u010detku deluje apsurdno. Me\u0111utim, ako gledate samo pH vrednost mo\u017eete videti kako to nije neobi\u010dno o\u010dekivanje.<\/p>\n

Kao \u0161to je ranije re\u010deno, alkalnost predstavlja pufernu sposobnost vode, \u0161to zna\u010di da se \u201copire promenama\u201d.\u00a0U prakti\u010dnom smislu, alkalnost stvara otpor od onoga \u0161to mu je dodato, poput kiseline. Bez alkalnosti pH vode bi se smanjio kada bi se dodala mala zapremina kiseline, a to bi u\u010dinilo kontrolu pH prakti\u010dno nemoguc\u0301om \u010dak i za najsavremenije sisteme. Opet, razumevanjem alkalnosti, uzgajiva\u010d uvi\u0111a da je dodavanje kiseline u konkretnom slu\u010daju u potpnunosti nepotrebno. Kada koristite vodu posle tretmana reverznom osmozom , program \u0111ubriva koji naizmeni\u010dno koristi bazno \u0111ubrivo koje sadr\u017ei kalcijum i magnezijum sa \u0111ubrivom niske potencijalne kiselosti mo\u017ee pomoc\u0301i u spre\u010davanju uru\u0161avanja pH u medijumu za rast. Tako\u0111e tako se mo\u017ee obezbediti dosta nutrijenata.<\/p>\n

Prednosti kombinovanog ubrizgavanja \u0111ubriva sa kontrolom pH (alkalnosti)<\/strong><\/p>\n

Kiseline su bile i uvek c\u0301e biti odli\u010dan alat za uzgajiva\u010de da pobolj\u0161aju kontrolu nad alkalno\u0161c\u0301u vode za navodnjavanje (uglavnom bikarbonati i karbonati) i pH medijuma u kojima se uzgaja, Jednom kada se uloga alkalnosti razume, uzgajiva\u010d mo\u017ee razmotriti sledec\u0301i prakti\u010dni korak za kontrolu alkalnosti koristec\u0301i kiseline kroz sistem ubrizgavanja. Pogledajte grafikon dole iz \u010dlanka napisanog u \u010dasopisu Garden and Greenhouse, koji ilustruje optimalni opseg pH gde c\u0301e vec\u0301ina usmerenih kultura apsorbovati hranljive materije.<\/p>\n<\/div>\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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Izvor: Garden and Greenhouse Magazine<\/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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Kriterijum za kiseline koji bi trebalo da koriste uzgajiva\u010di<\/strong><\/p>\n

Kiseline koje su obi\u010dno dostupne proizvo\u0111a\u010dima uklju\u010duju fosfornu, sumpornu, azotnu i limunsku. Tabela ispod \u00a0 od UMass Amherst, centra za poljoprivredu i hranu sadr\u017ei listu kriterijuma za biranje odgovaraju\u0107e kiseline, prenma relativnoj bezbednosti, neutrali\u0161u\u0107e, prema ceni i sadr\u017eaju nutrijenata. \u0160iroko kori\u0161\u0107enja, uglavnom dostupna i pristupa\u010dna je sumporna kiselina. Ona je i najopasnija izme\u0111u ostalog. Za uklanjanje male koli\u010dine alkalnosti, fosforna kiselina je verovatno najbolji izbor. Me\u0111utim, sa njom morate biti dodatno oprezni jer \u0107e pove\u0107ati nivo fosfora. Azotna kiselina je teoretski idealna jer dodaje nitratni azot; ali isparava i jako oksidira, \u0161to je \u010dini veoma nezgodnom za upravljanje. Limunska kiselina je slaba organska kiselina i \u010dvrsta supstanca, \u0161to je \u010dini sigurnijom od ostale tri; ali je mnogo manje efikasna i zato je skuplja za upotrebu. Jednom kada odaberete kiselinu, obavezno va\u0161 injektor mo\u017ee da se nosi sa zadatkom. Ne samo da je va\u017eno da materijali budu otporni na kiselinu, regulator mora biti u moguc\u0301nosti da precizno kontroli\u0161e i odr\u017eava fiksni pH u \u0161irokom opsegu protoka.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Izvor: UMass Amherst, The Center of Agriculture, Food, and the Environment<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Kako HANNA mo\u017ee pomo\u0107i uzgajiva\u010dima<\/strong><\/h3>\n

Kada se zasadi pravilno automatizuju sa Hanna sistemom za kontrolu pH i fertilizacije, uzgajiva\u010d mo\u017ee se stvoriti okru\u017eenje u kojem c\u0301e nutritivni unos korijenskog sistema uvek biti maksimalan. Automatizacija ovog procesa stvoric\u0301e pouzdanu preciznost i ta\u010dnost, smanjiti tro\u0161kove \u0111ubriva i rada, povec\u0301ac\u0301e prinose useva i zdravlje biljaka i obezbediti sigurno radno okru\u017eenje za osoblje.<\/p>\n

HANNA svoje sisteme mo\u017ee prilagoditi potrebama uzgajiva\u010da svih veli\u010dina.<\/strong><\/p>\n

    \n
  • HIACID je samostalni sistem za kontrolu pH koji se mo\u017ee primeniti na male i velike objekte koristec\u0301i bilo koju komercijalno dostupnu kiselinu.<\/li>\n
  • HI10000 mo\u017ee da primi objekte sa protokom od 5 GPM do 750 GPM. (galona po min)<\/li>\n
  • HI5000 i HI2500 su najbolji za uzgajiva\u010de malih veli\u010dina.<\/li>\n<\/ul>\n

    Ovaj nivo fleksibilnosti, zajedno sa daljinskim pristupom, mo\u017ee proizvesti korisniku i osoblju dobrobit kvaliteta \u017eivota, omoguc\u0301avajuc\u0301i celokupan proces kontrole pH i fertilizacije da se nadgleda i kontroli\u0161e sa bilo kojeg mesta na svetu.<\/p>\n

    Sveobuhvatno re\u0161enje: HANNA HI10000 sistem za kontrolu pH, fertigacije i irigacije<\/strong><\/h3>\n

    Proizvodnja\u00a0HANNA HI10000 sistem za unos \u0111ubriva<\/strong>\u00a0precizno nadgleda i kontroli\u0161e pH (ubrizgavanje kiseline) i koncentracije \u0111ubriva za sve vrste hidropona, stakleni\u010dkih i poljskih poljoprivrednih primena. HI10000 tako\u0111e omogu\u0107ava i kompletnu kontrolu irigacije sa kapacitetom od 32 ventila (zona).<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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    Za razliku od sistema zasnovanim na protoku, HANNA Fertigacionikontinuirano meri stvarni pH protoka i precizno prilago\u0111ava koncentraciju kiseline (ili baze) u sistemu primenom napredne hibridne tehnike protoka \/ pH kontrole. Kontrola ubrizgavanja kiseline mo\u017ee biti neverovatno te\u0161ka i nije linearna, tako da smo u kompaniji Hanna razvili sistem koji injektor ne samo da uskla\u0111uje unos na osnovu brzine protoka, vec\u0301 i prati pH i dodaje dodatna pode\u0161avanja na osnovu promene pH vode. Sa oba parametra pokrivena, Hanna sistem za kontrolu pH mo\u017ee sigurno ubrizgati do 93% sumporne kiseline i precizno odr\u017eavati zadatu vrednost pH u \u0161irokom opsegu protoka.<\/p>\n

    HANNA instruments je vode\u0107i svetski proizvo\u0111a\u010d pristupa\u010dne instrumentalizacije specijalno dizajnirane za poljoprivredne i stakleni\u010dke primene. Pored obezbe\u0111ivanja najkvalitetnijeg proizvoda skoro 40 godina, u kompaniji Hanna isporu\u010dujemo najvi\u0161i nivo tehni\u010dke podr\u0161ke nakon prodaje. Radi\u0107emosa vama od izbora proizvoda do same instalacije i treninga. Na\u0161 cilj je da se na\u0161im kupcima isporu\u010di najkvalitetnijiproizvod kao i kontinuelni servis i podr\u0161ku obezbe\u0111uju\u0107i najbolju vrednost za ulo\u017eeni novac.<\/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":"

    Alkalnost predstavlja pufersku sposobnost vode ili, jednostavnije re\u010deno, sposobnost vode da neutrali\u0161e kiselinu. \u0160to je […]<\/p>\n","protected":false},"author":17,"featured_media":151252,"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":[348],"tags":[],"class_list":["post-154480","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-poljoprivreda"],"yoast_head":"\nZa\u0161to je kontrola alkalnosti i pH zna\u010dajna za rast biljaka? 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