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2019, vol. 60, br. 1, str. 96-104
Efekat primene polifosfatnog stakla u supstratima za gajenje cveća i povrća
aUniverzitet u Beogradu, Poljoprivredni fakultet
bInstitut za tehnologiju nuklearnih i drugih mineralnih sirovina - ITNMS, Beograd
cUniverzitet u Beogradu, Tehnološko-metalurški fakultet
dInstitut za povrtarstvo, Smederevska Palanka

e-adresas.matijasevic@itnms.ac.rs
Projekat:
Razvoj stakala sa kontrolisanim otpuštanjem jona za primenu u poljoprivredi i medicini (MPNTR - 34001)
Fenomeni i procesi sinteze novih staklastih i nanostrukturnih staklo-keramičkih materijala (MPNTR - 172004)

Ključne reči: polifosfatno staklo; supstrat; biljka; rasad
Sažetak
Polifosfatno staklo, u kome je molski odnos (M2O + MO)/P2O5 >1, koje sadrži i mikroelemente Zn2+, Mn2+, Fe3+ i Cu2+, korišćeno je u supstratu za proizvodnju rasada cveća i povrća. Eksperimenti su izvedeni u stakleniku na Poljoprivrednom fakultetu u Beogradu i u laboratorijama ITNMS. Ispitivano je ponašanje polifosfatnog stakla prilikom rastvaranja u dejonizovanoj vodi i 2% rastvoru limunske kiseline na temperaturama od 20, 30, 37 i 50 °C. Ispitan je uticaj vremena rastvaranja na normalizovani gubitak mase (fm) i normalizovane koncentracije jona (fi). Određene su i konstante brzina rastvaranja(kw-dejonizovana voda, kc -2% rastvor limunske kiseline). Vrednosti kc su veće od vrednosti za kw, što potvrđuje uticaj rastvarača i temperature na proces rastvaranja. Rezultati su pokazali pozitivan efekat polifosfatnog stakla na rast i kvalitet ispitivanih biljaka. Primenjena doza polifosfatnog stakla od 1 gl-1 pokazala je najbolji efekat na rast ispitivanih biljaka-rasada.
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O članku

jezik rada: engleski
vrsta rada: naučni članak
DOI: 10.5937/zasmat1901096V
objavljen u SCIndeksu: 11.04.2019.
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