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2018, vol. 33, br. 3-4, str. 233-240
Efekat metribuzina na broj proteolitičkih mikroorganizama i proteolitičku aktivnost različitih tipova zemljišta
Institut za pesticide i zaštitu životne sredine, Beograd

e-adresaljiljkasantric@gmail.com
Projekat:
Proučavanje biljnih patogena, artropoda, korova i pesticida u cilju razvoja metoda bioracionalne zaštite bilja i proizvodnje bezbedne hrane (MPNTR - 31043)
Razvoj integrisanih sistema upravljanja štetnim organizmima u biljnoj proizvodnji sa ciljem prevazilaženja rezistentnosti i unapređenja kvaliteta i bezbednosti hrane (MPNTR - 46008)

Ključne reči: metribuzin; zemljište; proteolitički mikroorganizmi; proteaza
Sažetak
Tekstura zemljišta i druge fizičke i hemijske karakteristike zemljišta predstavljaju važne faktore koji utiču na zadržavanje herbicida u zemljišnim ekosistemima. Postavljen je laboratorijski ogled da bi se procenio odgovor proteolitičkih mikroorganizama i aktivnosti proteaze na primenu metribuzina u različitim tipovima zemljišta (ilovača i peskuša). Ispitivane su sledeće koncentracije. 12,0, 24,0; 120,0 i 1200,0 mg a.s. kg-1zemljišta. Uzorci su uzeti 7, 14 i 30 dana nakon primene metribuzina. Metribuzin nije uticao na broj proteolitičkih mikroorganizama u ilovači. U peskuši broj je smanjen za 26,7% sedam dana nakon primene najveće koncentracije. Aktivnost proteaze bila je smanjena u oba tipa zemljišta sedmog i četrnaestog dana, u ilovači procenat smanjenja je iznosio 21% a u peskuši 29,9%. Statistička analiza podataka je pokazala da je korelacioni odnos između ispitivanih parametara bio pozitivan za oba tipa zemljišta (za ilovaču r2=1; za peskušu r2=0,81). Ispitivanja su pokazala da je metribuzin imao prolazni uticaj na mikrobiološku populaciju i enzimatsku aktivnost i zavisio je od tipa zemljišta.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.2298/PIF1804233S
objavljen u SCIndeksu: 10.01.2019.
metod recenzije: dvostruko anoniman
Creative Commons License 4.0

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