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Effect of Soil and Water Conservation on Selected Soil Characteristics in Dimma Watershed, Central Ethiopia

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dc.contributor.advisor Elias, Eyasu
dc.contributor.author Habtamu, Haweni
dc.date.accessioned 2018-07-04T06:04:15Z
dc.date.available 2018-07-04T06:04:15Z
dc.date.issued 2015-10
dc.identifier.uri http://etd.aau.edu.et/handle/123456789/6073
dc.description.abstract In Ethiopia, agriculture is expanding onto the most erosion sensitive sites. The government has been investing in soil and water conservation (SWC) measures, mainly farmland terracing and exclosure of degraded lands. However, the general effects of soil and water conservation on soil moisture content and soil water availability of these changes have not been well investigated and documented including Dimma Watershed, Central Ethiopia. Therefore, this study was undertaken to investigate the effects of soil and water conservation practices on soil physical and chemical properties, and moisture dynamics there by assessing possible effects on land productivity. Field survey was conducted to collect the necessary data from 120 sample households, which were selected via purposive sampling in Gogeti and Sombo micro watersheds. The household survey questionnaire data have been tabulated and summarized by utilizing the statistical package for social science (SPSS). Laboratory analysis was done for soil samples collected from the upper 0-20 cm depth from land utilized for crop cultivation, upper stream, middle stream and lower stream of twin catchments in order to compare bulk density, total porosity, moisture content, pH, total nitrogen, available phosphorous, cation exchange capacity, Cations (Ca, Mg, K, Na), and organic matter. The results revealed that studied soil characteristics, such as: moisture content, in upper slope position OM, bulk density in the middle, and porosity in the lower slope position were affected by soil and water conservation and slope positions. Except for organic matter content in the upper slope position, nearly all studied chemical characteristics of the soil under the treated farm land of micro - watershed were not affected by SWC practices and slope positions as compared to the other farm land of untreated micro-watershed. These was related to the young age of the constructed SWC measures, implying that significant changes or effects of SWC on soil characteristics can be achieved only over long period of conservation. Keywords: Dimma Watershed; Physicochemical Characteristics of Soil; Soil and Water Conservation; Soil erosion en_US
dc.language.iso en en_US
dc.publisher Addis Ababa University en_US
dc.subject Dimma Watershed en_US
dc.subject Physicochemical Characteristics Of Soil en_US
dc.subject Soil and Water Conservation en_US
dc.subject Soil Erosion en_US
dc.title Effect of Soil and Water Conservation on Selected Soil Characteristics in Dimma Watershed, Central Ethiopia en_US
dc.type Thesis en_US

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