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Showing items 1 through 9 of 48.
  1. Library Resource
    Journal Articles & Books
    November, 2013
    Ethiopia, Africa, Eastern Africa

    Waterlogged Vertisols are amongst the high potential soils where management interventions could result in positive impacts. This study utilized soil, climate and crop and livestock productivity data and models to demonstrate intensification strategies which increase crop–livestock system productivity and to understand the effects of alternative land use and water management options on water productivity in the Vertisols areas.

  2. Library Resource
    Journal Articles & Books
    November, 2013
    Ethiopia, Africa, Eastern Africa

    The main objective of this research was to study soil erosion and sediment yield in Mizewa watershed using SWAT model. The study was involved hydrological and erosion modelling using primary data collected in the watershed. Hydrological and meteorological data were collected from the stations installed in the watershed by IWMI in collaboration with Ministry of Water and Energy and National Meteorological Service Agency. Suspended sediment data was collected at Mizewa River in the watershed, used for sediment rating curve development.

  3. Library Resource
    Journal Articles & Books
    November, 2013
    Ethiopia, Africa, Eastern Africa

    With the construction of the new Renaissance Dam at the Ethiopian Sudan border, reducing sediment load in the Blue Nile is becoming increasingly important. Past attempts of decreasing sediment concentrations have been only partially successful. In this paper, we will examine the temporal distribution of sediment generation within small watersheds and systematically compare this with the observed sediment concentration at various watershed scales using the Parameter Efficient Distributed (PED) model.

  4. Library Resource
    Journal Articles & Books
    November, 2013
    Ethiopia, Africa, Eastern Africa

    Koga irrigation scheme was developed to irrigate about 7004 ha. Furrow irrigation is the recommended method for the distribution of water. However, furrow irrigation has inherent inefficiencies due to deep percolation on the upper end and runoff at the lower end of the furrow. These losses depend on furrow length, furrow gradient, surface roughness, stream size and cutoff time. These factors play significant role to influence the advance time of irrigation and the operation rule of the scheme. This paper examines the advance time of furrow irrigation at Koga.

  5. Library Resource
    Journal Articles & Books
    November, 2013
    Ethiopia, Africa, Eastern Africa

    Access to safe drinking water services in the Ethiopian Highlands is one of lowest worldwide due to failure of water supply services shortly after construction. Over hundred water supply systems were surveyed to find the underlying causes of failure and poor performance throughout the Amhara Regional State. The results show generally that systems with decision-making power at the community level during design and construction remained working longer than when the decisions were made by a central authority.

  6. Library Resource
    Journal Articles & Books
    November, 2013
    Ethiopia, Africa, Eastern Africa

    Understanding soil hydraulic properties is crucial for planning effective soil and water management practices. A study was conducted to evaluate the effects of different biochar and charcoal treatments on soil-hydraulic properties of agricultural soils. Biochar and charcoal treatments were applied on 54, undisturbed soil-columns, extracted from three-elevation ranges, with replications along three transects. Daily weight losses of freely draining soil-columns and soil moisture contents, at five tensions, were measured.

  7. Library Resource
    Journal Articles & Books
    November, 2013
    Ethiopia, Africa, Eastern Africa

    Sustaining upland agriculture and food security is very much constrained by continuing land degradation brought by soil erosion due to lack of effective rainwater management strategies. Recently a large body of research evidence has established that significant potential exists to increase agricultural productivity through sustainable rainwater management interventions. Hydrological models are essential to understand the hydrological response of a catchment. The current paper focuses on hydrological modelling of catchment with SWAT model using its two versions, SWAT-CN and SWAT-WB.

  8. Library Resource
    Journal Articles & Books
    November, 2013
    Ethiopia, Africa, Eastern Africa

    The current paper discusses the use of hydrological modelling tool to understand sustainable land management interventions in the Blue Nile basin of Ethiopia. A micro-watershed named Mizewa with a drainage area of 27 km2 in Fogera district was selected and instrumented with hydrological cycle observation networks in the year 2011. The SWAT hydrological modelling tool was used to simulate landscape-wide Soil and Water Conservation (SWC) investments.

  9. Library Resource
    Conference Papers & Reports
    October, 2013

    Development of homestead farming system (HFS) has the potential for poverty alleviation in states like West Bengal since irrespective of the land holding size, most of the households in the coastal region of West Bengal, have a small piece of land adjacent to their dwelling where some kind of homestead farming is carried out using the indigenous knowledge.

  10. Library Resource
    Journal Articles & Books
    November, 2013
    Ethiopia, Africa, Eastern Africa

    This study uses Tobit and Logit models to examine the impacts of selected small-scale irrigation schemes in the Lake Tana basin of Ethiopia on household income and the likelihood of poverty, respectively. Data for these analyses were collected from a sample of 180 households. Households using any of the four irrigation systems had statistically significantly higher mean total gross household income than households not using irrigation.

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