20.500.12556/DKUM-72910 Primerjava metod za določanje potrebnih količin sredstva za apnjenje na osnovi različnih parametrov kakovosti tal Comparison of determination methods for required liming material for soil liming based on various soil quality parameters Magistrsko delo temelji na primerjavi treh različnih metod za določanje potrebnih količin sredstva za apnjenje na pretežno kislih tleh iz SV dela Slovenije. Reakcijo tal smo izmerili v treh različnih raztopinah (KCl, CaCl2 in Ca(CH3COO)2). Potencialna kislost tal v raztopini KCl se je gibala med 3,46 in 7,06 pH oziroma v raztopini CaCl2 med 3,80 in 7,21 pH, medtem ko je hidrolitska kislost v raztopini Ca(CH3COO)2 variirala med 6,05 in 7,45 pH. Ugotovili smo zelo močno povezanost med pH-vrednostmi potencialne kislosti v raztopinah KCl in CaCl2 (koeficient korelacije R = 0,96). Pri izračunu potrebne količine sredstva za apnjenje smo primerjali tri različne metode, ki upoštevajo različne parametre kakovosti tal: Schachtschabel, VDLUFA in Vukadinović-Lončarić. Potrebne količine sredstva za apnjenje so primerljive po metodi Schachtschabel in Vukadinović-Lončarić (povprečna izračunana količina apnilnega sredstva pri Vukadinović-Lončarić je bila 15 CaO (dt/ha), pri Schachtschabel pa 14 CaO (dt/ha)), medtem ko je metoda VDLUFA dala petkrat večje količine kot drugi dve metodi. Pri slednji metodi smo talnim vzorcem določili tudi teksturo tal in vsebnost organske snovi. Rezultati so pokazali, da je bila korelacija med vsebnostjo organske snovi in vsebnostjo gline neznatna (R = 0,15), med organsko snovjo in vsebnostjo peska prav tako neznatna (R = 0,18) in med organsko snovjo in vsebnostjo melja negativno šibka (R = –0,21). Zelo šibka je bila tudi korelacija med vsebnostjo gline in pH (R ≤ 0,11) oziroma med vsebnostjo organske snovi in reakcijo tal v KCl (R = 0,24). This Masters thesis is based on a comparison of three different methods for determining the quantity of lime agent needed for the soils originating in the North-Western part of Slovenia. The soil reaction was measured in three different solutions (KCl, CaCl2 in Ca(CH3COO)2). The potential acidity of soil was measured to be between 3,46 and 7,06 pH in the KCl solution and between 3,80 and 7,21 pH in the CaCl2 solution, while the hydrolytic acidity in the Ca(CH3COO)2 solution was measured to be between 6,05 and 7,45 pH. We discovered a strong correlation (correlation coefficient R = 0,96) between the measurements of pH in solutions with KCl and CaCl2. In the second part of the thesis, we compared three different methods for the comparison of soil quality: Schachtschabel, VDLUFA and Vukadinović-Lončarić. We discovered that the methods of Schachtschabel and Vukadinović-Lončarić give similar values for the quantity of lime agent required (average quantity of the lime agent using the Vukadinović-Lončarić method was calculated to be 15 CaO (dt/ha), while the Schachtschabel method gave 14 CaO (dt/ha)), the VDLUFA resulted with a factor of five higher quantity of the lime agent. With the later we also determined the soil texture and organic matter content for the soil samples. The results show that the organic matter content and clay content are weakly correlated (R = 0,15), as well as organic matter content and sand content (R = 0,18) and negatively low correlation between the organic matter content and silt content (R = -0,21). Moreover, we found a very low correlation between clay content and pH (R ≤ 0,11) and organic matter content and reaction of soil in KCl (R = 0,24). apnjenje reakcija tal kisla tla kalcijev oksid (CaO) kalcijev karbonat (CaCO3) liming soil reaction acid soil calcium oxide (CaO) calcium carbonate (CaCO3) true true false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2018-12-12 09:34:39 2018-12-20 09:55:57 2022-08-01 23:39:48 2019-07-11 19:37:07 2018 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:IIAMIKXF MAG_Manjevic_Kopcic_Tjaz_2018.pdf MAG_Manjevic_Kopcic_Tjaz_2018.pdf 1 01A223577C801B3C838B1D2DC3732F30 cfd72faf30be114bdba54cb8b143a00a6774b0f3c9c862fca40b3c8dd4f17362 8ba19304-7c10-11eb-bb7a-00155d0001ca 20.500.12556/dkum/c5cc46d3-cbcc-420d-bec6-dcd95919b8bf https://dk.um.si/Dokument.php?lang=slv&id=131909 Fakulteta za kmetijstvo in biosistemske vede 0 0 0