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2012, vol. 49, br. 3, str. 335-344
Značaj i efekat primene PGPR na mikrobiološku aktivnost u rizosferi kukuruza
Naučni institut za ratarstvo i povrtarstvo, Novi Sad

e-adresanastasija.mrkovacki@ifvcns.ns.ac.rs
Projekat:
Unapređenje proizvodnje kukuruza i sirka u uslovima stresa (MPNTR - 31073)

Ključne reči: biođubriva; đubrenje; fosfor; izlučevine; koren; kukuruz; mikroorganizmi; promotori biljnog rasta; rizosfera; zemljišta
Sažetak
Mikroorganizmi učestvuju u stvaranju plodnosti zemljišta, kako potencijalne tako i efektivne. Mikroorganizmi omogućavaju odvijanje procesa humifikacije i dehumifikacije i zauzimaju centralno mesto u kruženju neophodnih hranljivih makro i mikroelemenata. Zona zemljišta koja okružuje korenov sistem biljaka i pod uticajem je njegovih izlučevina može se definisati kao rizosfera. Svojim korenskim izlučevinama kukuruz može značajno da utiče na sastav i brojnost mikroorganizama u rizosferi. Biofertilizatori su mikrobiološka đubriva koja sadrže selekcionisane visoko efektivne sojeve bakterija, algi i gljiva izolovane iz zemljišta. Njihovim unošenjem u zemljište aktiviraju se odgovarajući mikrobiološki procesi koji omogućavaju bolje i ravnomernije snabdevanje biljaka azotom, fosforom i kalijumom, kao i nekim mikroelementima. Primenom biofertilizatora koji sadrže rizobakterije promotore biljnog rasta - PGPR (Plant Growth Promoting Rhizobacteria) smanjuje se upotreba skupih azotnih đubriva, omogućava se biljci lakše usvajanje fosfora i utiče na pravac i dinamiku mikrobioloških procesa.
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O članku

jezik rada: srpski
vrsta rada: pregledni članak
DOI: 10.5937/ratpov49-1915
objavljen u SCIndeksu: 08.01.2013.
metod recenzije: dvostruko anoniman