Wakindiki, I. I. C.Odhiambo, J. J. O.Magagula, Siyabonga Isaac2020-09-292020-09-292020-06-21Magagula, Siyabonga Isaac (2020) Tillage, soil texture and mineralogy effects on selected soil properties on four soil types in Limpopo Province, South Africa. University of Venda, South Africa.<http://hdl.handle.net/11602/1557>.http://hdl.handle.net/11602/1557MSCAGR (Soil Science)Department of Soil ScienceThe effects of tillage on soil structure and associated soil properties such as soil respiration may differ in different soils. The study determined the effects of tillage, soil texture and mineralogy in selected soil properties on different soil types. Soil samples were collected from four different sites in the Limpopo province, South Africa. The soils were classified as Glenrosa with sandy loam texture, Dundee with loamy sand, Hutton with clay, and Shortlands with clay. Glenrosa and Dundee were dominated by quartz, while Hutton and Shortlands with kaolinite. Soil samples were taken from the surface 0 – 20 cm under conventional tillage and no-till land. Soil organic matter, texture, and mineralogy were determined. The soils were wetted to activate the microorganisms and incubated for 70 days at 30℃ and soil respiration was determined using alkali trap method on a weekly basis. The study was conducted in triplicates and arranged in a completely randomized design. Data was subjected to analysis of variance using general linear model procedure of Minitab version 19. Means were compared using paired t-test at (p ≤ 0.05). The Pearson correlation coefficient (r) was used to measure the strength of linear dependence between variables. There was a significant difference in soil organic matter (p≤0.000) among all studied soils. The mean values of soil organic matter were 2.19% in Hutton, 2.0% in Shortlands, 0.54% in Glenrosa, and 0.43% in Dundee. Quartz had a strong negative linear relationship (r = -0.66) with soil organic matter while kaolinite had a strong positive linear relationship (r = 0.96). Soil respiration increased in soils dominated with quartz and decreased in soils dominated with kaolinite. The soil respiration increased by 18.95 g CO2 m-2 d-1 in conventional tillage and decreased by 13.88 g CO2 m-2 d-1 in no-tillage due to increased exposure of soil organic matter under conventional. It was concluded that less intensive tillage such as no-tillage reduces soil respiration.1 online resource (viii, 67 leaves : color illustrations, color map)enUniversity of VendaClay contentUCTDCO2 effluxSoil organic matterKaoliniteQuartz631.51096825Tillage -- South Africa -- LimpopoSoil management -- South Africa -- LimpopoSoils -- South Africa -- LimpopoNo-tillage -- South Africa -- LimpopoSoil texture -- South Africa -- LimpopoSoils -- ClassificationSoil mineralogy -- South Africa -- LimpopoDissertationMagagula SI. Tillage, soil texture and mineralogy effects on selected soil properties on four soil types in Limpopo Province, South Africa. []. , 2020 [cited yyyy month dd]. Available from: http://hdl.handle.net/11602/1557Magagula, S. I. (2020). <i>Tillage, soil texture and mineralogy effects on selected soil properties on four soil types in Limpopo Province, South Africa</i>. (). . Retrieved from http://hdl.handle.net/11602/1557Magagula, Siyabonga Isaac. <i>"Tillage, soil texture and mineralogy effects on selected soil properties on four soil types in Limpopo Province, South Africa."</i> ., , 2020. http://hdl.handle.net/11602/1557TY - Dissertation AU - Magagula, Siyabonga Isaac AB - The effects of tillage on soil structure and associated soil properties such as soil respiration may differ in different soils. The study determined the effects of tillage, soil texture and mineralogy in selected soil properties on different soil types. Soil samples were collected from four different sites in the Limpopo province, South Africa. The soils were classified as Glenrosa with sandy loam texture, Dundee with loamy sand, Hutton with clay, and Shortlands with clay. Glenrosa and Dundee were dominated by quartz, while Hutton and Shortlands with kaolinite. Soil samples were taken from the surface 0 – 20 cm under conventional tillage and no-till land. Soil organic matter, texture, and mineralogy were determined. The soils were wetted to activate the microorganisms and incubated for 70 days at 30℃ and soil respiration was determined using alkali trap method on a weekly basis. The study was conducted in triplicates and arranged in a completely randomized design. Data was subjected to analysis of variance using general linear model procedure of Minitab version 19. Means were compared using paired t-test at (p ≤ 0.05). The Pearson correlation coefficient (r) was used to measure the strength of linear dependence between variables. There was a significant difference in soil organic matter (p≤0.000) among all studied soils. The mean values of soil organic matter were 2.19% in Hutton, 2.0% in Shortlands, 0.54% in Glenrosa, and 0.43% in Dundee. Quartz had a strong negative linear relationship (r = -0.66) with soil organic matter while kaolinite had a strong positive linear relationship (r = 0.96). Soil respiration increased in soils dominated with quartz and decreased in soils dominated with kaolinite. The soil respiration increased by 18.95 g CO2 m-2 d-1 in conventional tillage and decreased by 13.88 g CO2 m-2 d-1 in no-tillage due to increased exposure of soil organic matter under conventional. It was concluded that less intensive tillage such as no-tillage reduces soil respiration. DA - 2020-06-21 DB - ResearchSpace DP - Univen KW - Clay content KW - CO2 efflux KW - Soil organic matter KW - Kaolinite KW - Quartz LK - https://univendspace.univen.ac.za PY - 2020 T1 - Tillage, soil texture and mineralogy effects on selected soil properties on four soil types in Limpopo Province, South Africa TI - Tillage, soil texture and mineralogy effects on selected soil properties on four soil types in Limpopo Province, South Africa UR - http://hdl.handle.net/11602/1557 ER -