20.500.12556/DKUM-85600 Dinamika mineralnega dušika v tleh glede na različno rabo travinja v Podravski in Savinjski regiji magistrsko delo Mineral Nitrogen Dynamics in Soils in Relation to Grassland Use in the Podravje and Savinja Regions V sklopu ciljnega raziskovalnega projekta, ki se je izvajal na Fakulteti za kmetijstvo in biosistemske vede UM, smo jeseni leta 2020 na 24 kmetijah v Podravski in Savinjski regiji odvzeli vzorce tal travinja za analizo mineralnega dušika (Nmin) v tleh in reakcije tal (pH). Vzorčili smo na globini 0-30 cm in 30-60 cm. Izbrali smo kmetije s 3-kosno, 4-kosno in pašno-kosno rabo travinja. Odvzetim talnim vzorcem smo določili vsebnost nitratne (NO3) in amonijske (NH4) oblike dušika, skupno količino mineralnega dušika (Nmin) in reakcijo oz. pH tal. Ugotovili smo, da obstajajo statistično značilne razlike med pašno-kosno in 3-kosno rabo, pri čemer so bile vsebnosti NO3 in Nmin višje pri pašno-kosni rabi. Pri NH4 ni bilo statistično značilnih razlik glede na rabo, so pa bile statistično značilne razlike pri vseh parametrih v obeh regijah glede na globino vzorčenja, in sicer so bile vsebnosti v spodnji plasti tal (30-60 cm) nižje. Reakcija tal se je razlikovala glede na regijo vzorčenja, vendar pa razlika ni bila statistično značilna. Ugotavljamo, da se razlike v količini mineralnega dušika v tleh kažejo glede na rabo travinja, vendar pa bi morali za bolj natančne rezultate tla vzorčiti tekom celotnega leta. Le tako bi lahko določili dejansko dinamiko vsebnosti mineralnega dušika v tleh. As part of a targeted research project carried at the Faculty of Agriculture and Life Sciences, soil samples were taken from grassland at 24 farms in the Podravje and Savinja regions in autum 2020, in order to analyse mineral nitrogen in the soil and the soils' reaction. We took samples at a depth of 0-30 cm and 30-60 cm and selected farms with different grassland use, namely, 3 cuts per year, 4 cuts per year and a combination of cutting and grazing. We analysed the nitrogen forms nitrate (NO3) and ammonim (NH4), total mineral nitrogen (Nmin) and soil pH. We found statistically significant differences between the combination of cutting and grazing and the systems with 3 cuts per year, with NO3 and Nmin levels higher in the grazing and cutting treatment. For NH4, there were no statistically significant differences according to use. However, there were statistically significant differences for all parameters in both regions depending on the depth of sampling, with lower levels in the lower soil layer (30-60 cm). Soil response varied by region of sampling, but the difference was not statistically significant. We concluded that there are differences in mineral nitrogen depending on grassland use, but that for more accurate results we would need to sample throught the year, as this would be the only way to determine the actual dynamics of mineral nitrogen in the soil. travinje mineralni dušik paša košnja grassland mineral nitrogen grazing mowing true true false M. Rakovec Slovenski jezik Angleški jezik Magistrsko delo/naloga 2023-09-04 12:43:26 2023-10-06 13:12:01 2024-01-09 08:49:54 0000-00-00 00:00:00 2023 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (VIII, 30 str.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 633.2/.3:631.416.1:631.84(043)=163.6 167365635 MAG_Rokavec_Matej_2023.pdf MAG_Rokavec_Matej_2023.pdf 1 E81921FC6BDD9E03D48BF3C48B5811EB d1113aad71fbbed16f0cf1bace70213c72a144a294062bcaf9766f37c224f9a1 d59c8631-4ce9-11ee-8fb0-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=171699 Fakulteta za kmetijstvo in biosistemske vede 0 0 0