F. Yohannes
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
F. Yohannes has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
M. Alemayehu
Alemaya University, PO Box 138, Dire Dawa, Ethiopia
1 shared publicationP. Dubale
Ethiopian Agricultural Research Organization, PO Box 2003, Addis Ababa, Ethiopia
1 shared publicationS. Muleta
Alemaya University, PO Box 138, Dire Dawa, Ethiopia
1 shared publicationS.M. Rashid
Alemaya University, PO Box 138, Dire Dawa, Ethiopia
1 shared publication
Latest Publications
- 16 May 2006
- Published by Wiley in Land Degradation & Development
- Vol. 17 (3) , 333-341
Soil erosion assessment of Lake Alemaya catchment, Ethiopia
Land degradation due to soil erosion is the major problem facing Ethiopia today. In the Lake Alemaya catchment soil erosion is caused by the intense rainfall, steep topography, and poor vegetation cover coupled with cultivation of steep lands, and inadequate conservation practices. Sediment from the catchment has affected the storage capacity of Lake Alemaya. This study has integrated the Agricultural Non‐point Source Pollution Model (AGNPS) and the technique of the Gographic Information System (GIS) to quantify soil erosion in the Lake Alemaya catchment. After application of the AGNPS, it appears that 66 per cent of the catchment has a soil erosion rate of 10 to more than 80 t ha−1 y−1. The annual soil loss is estimated at 31 t ha−1, which is more than the permissible value of 1–16 t ha−1 for different agro‐ecological zones of Ethiopia. The sediment yield of the catchment is about 10 148 ton with a delivery ratio of 6·82 per cent. Therefore, an effective management plan is needed for the conservation and rehabilitation of the catchment and to maintain the storage capacity of Lake Alemaya. Copyright © 2006 John Wiley & Sons, Ltd.
- 16 May 2006
- Published by Wiley in Land Degradation & Development
- Vol. 17 (3) , 333-341
Soil erosion assessment of Lake Alemaya catchment, Ethiopia
Land degradation due to soil erosion is the major problem facing Ethiopia today. In the Lake Alemaya catchment soil erosion is caused by the intense rainfall, steep topography, and poor vegetation cover coupled with cultivation of steep lands, and inadequate conservation practices. Sediment from the catchment has affected the storage capacity of Lake Alemaya. This study has integrated the Agricultural Non‐point Source Pollution Model (AGNPS) and the technique of the Gographic Information System (GIS) to quantify soil erosion in the Lake Alemaya catchment. After application of the AGNPS, it appears that 66 per cent of the catchment has a soil erosion rate of 10 to more than 80 t ha−1 y−1. The annual soil loss is estimated at 31 t ha−1, which is more than the permissible value of 1–16 t ha−1 for different agro‐ecological zones of Ethiopia. The sediment yield of the catchment is about 10 148 ton with a delivery ratio of 6·82 per cent. Therefore, an effective management plan is needed for the conservation and rehabilitation of the catchment and to maintain the storage capacity of Lake Alemaya. Copyright © 2006 John Wiley & Sons, Ltd.
- 24 January 2006
- Published by Wiley in Land Degradation & Development
- Vol. 17 (1) , 45-54
Effect of indigenous stone bunding (kab) on crop yield at Mesobit‐Gedeba, North Shoa, Ethiopia
Stone bunding (kab) is an age‐old local conservation practice at Mesobit‐Gedeba. This study was conducted to assess the effect of this indigenous practice on crop yield. We compared original ground slope, terrace width, and slope position of the terraced area. The effect of slope width and slope position were found significant (p < 0·05) for both grain and biomass yields of the terraced sites. The mean grain and biomass yields decreased as the original ground slope of the terraced site increased. Both grain and biomass yields decreased with the width of the inter‐terrace area. Significant differences (p < 0·05) in mean grain and biomass yields were observed between the three slope positions. They decreased as one moved up the slope within the inter‐terrace area. In general, the study indicated that indigenous stone bunding has a positive effect on sorghum yield. Future studies should address different locations and crops and ways of integrating indigenous stone bunding with the current conservation programmes of the region. Copyright © 2006 John Wiley & Sons, Ltd.
- 24 January 2006
- Published by Wiley in Land Degradation & Development
- Vol. 17 (1) , 45-54
Effect of indigenous stone bunding (kab) on crop yield at Mesobit‐Gedeba, North Shoa, Ethiopia
Stone bunding (kab) is an age‐old local conservation practice at Mesobit‐Gedeba. This study was conducted to assess the effect of this indigenous practice on crop yield. We compared original ground slope, terrace width, and slope position of the terraced area. The effect of slope width and slope position were found significant (p < 0·05) for both grain and biomass yields of the terraced sites. The mean grain and biomass yields decreased as the original ground slope of the terraced site increased. Both grain and biomass yields decreased with the width of the inter‐terrace area. Significant differences (p < 0·05) in mean grain and biomass yields were observed between the three slope positions. They decreased as one moved up the slope within the inter‐terrace area. In general, the study indicated that indigenous stone bunding has a positive effect on sorghum yield. Future studies should address different locations and crops and ways of integrating indigenous stone bunding with the current conservation programmes of the region. Copyright © 2006 John Wiley & Sons, Ltd.