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Papers by Desalegn Chemeda

Research paper thumbnail of Farmers' Perception of Water Management under Drought Conditions in the Upper Awash Basin, Ethiopia

International Journal of Water Resources Development, 2006

ABSTRACT A survey was conducted in the Upper Awash River Basin, Ethiopia, to assess agricultural ... more ABSTRACT A survey was conducted in the Upper Awash River Basin, Ethiopia, to assess agricultural water management practices adopted by the farmers under drought conditions. The results show that on average drought prevails in the area once every two years and causes damage to ...

Research paper thumbnail of Spatio-temporal Variability of Climate for Crop Production

The timing, variability, and quantity of seasonal and annual rainfall are important factors in th... more The timing, variability, and quantity of seasonal and annual rainfall are important factors in the relationship between climate and cultivation in Sub-Saharan Africa. If there is an unexpected break in rainfall early in the growing season, farmers may be able to recover and resume production despite the loss of some of their crops. However, if such a break occurs in the middle or latter part of the growing season, all of the crops sown may suffer irreparable damage, with dire economic consequences for farmer. Besides, frequent dry spells and droughts are common phenomena during the monsoon season. This book, therefore, provides agriculturalists, policy makers and farmers to have a proper knowledge of short period rainfall distribution both in time and space. Furthermore, it gives a detail explanation to know the chances of occurrence of dry spells during the critical stages of the crops for deciding the sowing date, cropping pattern and planning for irrigation and intercultural oper...

Research paper thumbnail of A framework for defining equity and sustainability in the Nile River Basin

International Journal of Water Resources and Environmental Engineering, Mar 31, 2012

Research paper thumbnail of A framework for defining equity and sustainability in the Nile River Basin

The objectives of this research were to objectively define the two important terms, ‘equity ’ and... more The objectives of this research were to objectively define the two important terms, ‘equity ’ and ‘without appreciable harm’, in the water utilization principles enshrined in the United Nation (UN) Convention in the context of visions of the Nile Basin Initiative (NBI). Need-based allocation of Nile waters and the new emerging concept of ‘reserved ’ and ‘shared ’ water were used as tools to quantify equity. Results of

Research paper thumbnail of Climate resources analysis for use of planning in crop production and rainfall water management in the central highlands of Ethiopia, the case of Bishoftu district, Oromia region

Abstract. Agricultural practices and water resources management in the central highlands of Ethio... more Abstract. Agricultural practices and water resources management in the central highlands of Ethiopia is highly dependant and associated with climatic resources and their pattern and hence wise use of those resources is a priority for the region. Accordingly, a study was conducted to asses and critically quantity the climate resources of the central high lands of Ethiop, Bishoftu district. Thirty three years of weather record data has been used for the work. The onset, duration and end of the growing seasons were defined and quantified based on FAO and Reddy models while the dry and wet spell distributions and the drought events were calculated using the Markov chain models and the standardized precipitation index (SPI) respectively. The results revealed that the mean onset of the main (Kiremt) growing season was found to occur during the second meteorological decade and ended during the end of September. Similarly, though unreliable and only few occurred during the entire study peri...

Research paper thumbnail of Dry and Wet Spell Analysis of the Two Rainy Seasons for Decision Support in Agricultural Water Management for Crop production in the Central Highlands of Ethiopia

Journal of Biology Agriculture and Healthcare, 2013

Research paper thumbnail of Rainfall Occurrences, Precipitation Deficit and Surplus Analysis for Rainfall Water Harvesting and Management in the Central highlands of Ethiopia, the Case of Bishoftu District, Oromia Region

Journal of Environment and Earth Science, 2013

Research paper thumbnail of A framework for defining equity and sustainability in the Nile River Basin

The objectives of this research were to objectively define the two important terms, 'equity&#... more The objectives of this research were to objectively define the two important terms, 'equity' and 'without appreciable harm', in the water utilization principles enshrined in the United Nation (UN) Convention in the context of visions of the Nile Basin Initiative (NBI). Need-based allocation of Nile waters and the new emerging concept of 'reserved' and 'shared' water were used as tools to quantify equity. Results of allocation based on per capita per year indicated that Ethiopia, Sudan, Egypt and Equatorial states, each, will get 15, 22, 49, and 14% of the annual flow of Nile waters, respectively. Evaluation of allocation scenarios of the Nile waters revealed that allocation based on the 1959 Water Agreement does not guarantee sustainable utilization and does not comply with the UN Convention. However, allocation based on the weighted area and per capita methods were found to guarantee sustainable utilization and to comply with the UN Convention. The r...

Research paper thumbnail of Effects of drip irrigation levels and planting methods on yield and yield components of green pepper (Capsicum annuum, L.) in Bako, Ethiopia

Agricultural Water Management, 2009

Research paper thumbnail of Farmers' Perception of Water Management under Drought Conditions in the Upper Awash Basin, Ethiopia

International Journal of Water Resources Development, 2006

Research paper thumbnail of Farmers' Perception of Water Management under Drought Conditions in the Upper Awash Basin, Ethiopia

International Journal of Water Resources Development, 2006

ABSTRACT A survey was conducted in the Upper Awash River Basin, Ethiopia, to assess agricultural ... more ABSTRACT A survey was conducted in the Upper Awash River Basin, Ethiopia, to assess agricultural water management practices adopted by the farmers under drought conditions. The results show that on average drought prevails in the area once every two years and causes damage to ...

Research paper thumbnail of Spatio-temporal Variability of Climate for Crop Production

The timing, variability, and quantity of seasonal and annual rainfall are important factors in th... more The timing, variability, and quantity of seasonal and annual rainfall are important factors in the relationship between climate and cultivation in Sub-Saharan Africa. If there is an unexpected break in rainfall early in the growing season, farmers may be able to recover and resume production despite the loss of some of their crops. However, if such a break occurs in the middle or latter part of the growing season, all of the crops sown may suffer irreparable damage, with dire economic consequences for farmer. Besides, frequent dry spells and droughts are common phenomena during the monsoon season. This book, therefore, provides agriculturalists, policy makers and farmers to have a proper knowledge of short period rainfall distribution both in time and space. Furthermore, it gives a detail explanation to know the chances of occurrence of dry spells during the critical stages of the crops for deciding the sowing date, cropping pattern and planning for irrigation and intercultural oper...

Research paper thumbnail of A framework for defining equity and sustainability in the Nile River Basin

International Journal of Water Resources and Environmental Engineering, Mar 31, 2012

Research paper thumbnail of A framework for defining equity and sustainability in the Nile River Basin

The objectives of this research were to objectively define the two important terms, ‘equity ’ and... more The objectives of this research were to objectively define the two important terms, ‘equity ’ and ‘without appreciable harm’, in the water utilization principles enshrined in the United Nation (UN) Convention in the context of visions of the Nile Basin Initiative (NBI). Need-based allocation of Nile waters and the new emerging concept of ‘reserved ’ and ‘shared ’ water were used as tools to quantify equity. Results of

Research paper thumbnail of Climate resources analysis for use of planning in crop production and rainfall water management in the central highlands of Ethiopia, the case of Bishoftu district, Oromia region

Abstract. Agricultural practices and water resources management in the central highlands of Ethio... more Abstract. Agricultural practices and water resources management in the central highlands of Ethiopia is highly dependant and associated with climatic resources and their pattern and hence wise use of those resources is a priority for the region. Accordingly, a study was conducted to asses and critically quantity the climate resources of the central high lands of Ethiop, Bishoftu district. Thirty three years of weather record data has been used for the work. The onset, duration and end of the growing seasons were defined and quantified based on FAO and Reddy models while the dry and wet spell distributions and the drought events were calculated using the Markov chain models and the standardized precipitation index (SPI) respectively. The results revealed that the mean onset of the main (Kiremt) growing season was found to occur during the second meteorological decade and ended during the end of September. Similarly, though unreliable and only few occurred during the entire study peri...

Research paper thumbnail of Dry and Wet Spell Analysis of the Two Rainy Seasons for Decision Support in Agricultural Water Management for Crop production in the Central Highlands of Ethiopia

Journal of Biology Agriculture and Healthcare, 2013

Research paper thumbnail of Rainfall Occurrences, Precipitation Deficit and Surplus Analysis for Rainfall Water Harvesting and Management in the Central highlands of Ethiopia, the Case of Bishoftu District, Oromia Region

Journal of Environment and Earth Science, 2013

Research paper thumbnail of A framework for defining equity and sustainability in the Nile River Basin

The objectives of this research were to objectively define the two important terms, 'equity&#... more The objectives of this research were to objectively define the two important terms, 'equity' and 'without appreciable harm', in the water utilization principles enshrined in the United Nation (UN) Convention in the context of visions of the Nile Basin Initiative (NBI). Need-based allocation of Nile waters and the new emerging concept of 'reserved' and 'shared' water were used as tools to quantify equity. Results of allocation based on per capita per year indicated that Ethiopia, Sudan, Egypt and Equatorial states, each, will get 15, 22, 49, and 14% of the annual flow of Nile waters, respectively. Evaluation of allocation scenarios of the Nile waters revealed that allocation based on the 1959 Water Agreement does not guarantee sustainable utilization and does not comply with the UN Convention. However, allocation based on the weighted area and per capita methods were found to guarantee sustainable utilization and to comply with the UN Convention. The r...

Research paper thumbnail of Effects of drip irrigation levels and planting methods on yield and yield components of green pepper (Capsicum annuum, L.) in Bako, Ethiopia

Agricultural Water Management, 2009

Research paper thumbnail of Farmers' Perception of Water Management under Drought Conditions in the Upper Awash Basin, Ethiopia

International Journal of Water Resources Development, 2006