The effects of temperature and concentration of nitrate upon denitrification in some Manitoba soils

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dc.contributor.authorKhdyer, Ismail Ibrahim.en_US
dc.date.accessioned2012-05-17T14:35:37Z
dc.date.available2012-05-17T14:35:37Z
dc.date.issued1978en_US
dc.degree.disciplineSoil Scienceen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractThe effect of temperature and concentration of added NO-3 on the rate of denitrification was investigated by studying the rate of disappearance of NO-3-N and production of gaseous nitrogen products under flooded conditions. Three soils differing in their initial pH (Keld - pH 5.4, Wellwood - pH 6.3, and Morton - pH 7.8) were selected for this study. Three levels of NO-3- 100, 150 and 200 ppm - and three incubation temperature - 15, 25 and 35oC - were used. Nitrate disappearance rate was found to be independent of initial NO-3 level with the Morton soil. The rate was increased with increasing temperature. Nitrogen gas was the major gas produced and its production rate was independent of the level of NO-3. The temperature dependence of the zero order rate constant for N2 production followed the Arrehnius equation... Oxygen consumption and CO2 production increased with increasing temperature. The rates of O2 consumption and the production of CO2 were unaffected by concentration of NO-3. Liming the soil did not alter O2 consumption...en_US
dc.format.extentx [i.e. xi], 125 leaves :en_US
dc.identifierocm72782804en_US
dc.identifier.urihttp://hdl.handle.net/1993/6303
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.titleThe effects of temperature and concentration of nitrate upon denitrification in some Manitoba soilsen_US
dc.typemaster thesisen_US
local.subject.manitobayesen_US
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