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Title: The Role of SWC Practices for Sustainable Agriculture and the perception of Farmers in The central rift vally of Ethiopia. The Case of KECHEMA CATCHMENT, ADAMA
Authors: Melese, Gebreyes
Advisors: Mekuria Argaw(Dr.)
Keywords: SWC,
farmers’ perceptions
soil erosion,
soil fertility
rill erosion and gully erosion
Copyright: Nov-2010
Date Added: 13-Jul-2012
Publisher: Addis Ababa University
Abstract: This study was made in a selected catchment in the upper part of the Central Rift-Valley where SWC have been implemented. The objective of this study is to examine the impact of SWC practices on the improvement of soil properties and yield on cultivated fields in two land units of the catchment; the magnitude and rate of rill and gully erosion; and the perception of farmers to land resource degradation and management problems; major SWC activities to control soil erosion and soil fertility decline. Two land units within the same biophysical and socio-economic setting, but with different treatment were selected. A total of 24 soil samples from three slope positions were taken and analyzed for some physico-chemical properties. Rill and gully erosion surveys were conducted in the two selected land units. Socio-economic data were also obtained from a survey of 90 households using semi-structured questionnaire. The result of the physic-chemical properties of the soil: soil moisture, OC, OM and CEC (0.001), TN, Av.K and P (0.001-0.034), ExB (0.00-0.005) did show significant difference at 0.05 levels. The soil pH for the two sites was between 6.7 and 7.5, neutral to slightly alkaline. The amount of soil loss by rills and interrills is 38.67t/ha for treated and 50.30t/ha for untreated land units; the amount of soil lost through gully erosion was 10.63t/ha and 24.39t/ha in the treated and untreated land units respectively. The household survey results have shown that more than 70% of the farmers reported soil related problems (erosion and fertility decline), and the problem is severe in the untreated farm fields. They recognized different sings of erosion and fertility decline such as: rill, and gully erosion; yield decline and high input demand. Almost all farmers believed that erosion problem could be halted, and felt it is their responsibility to conserve their land for the sustainability of the agricultural system now and for the generation to come. About 78% of the farmers maintained SWC structures in their farm field at least once a year. They use a range of practices for erosion control and fertility improvement, and have seen that the conservation intervention in the past and nowadays appeared to be more beneficial, where increased yield is observed. Thus, they have started developing a positive attitude towards the externally recommended measures.
Description: A Thesis Submitted to the School of Graduate Studies of Addis Ababa University in Partial Fulfillment of the Requirement of the Degree of Master of Science in Environmental Science Program
URI: http://hdl.handle.net/123456789/3356
Appears in:Thesis - Environmental Sciences

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