Bekele Tesfaye - Academia.edu (original) (raw)
Papers by Bekele Tesfaye
MOJ Ecology & Environmental Sciences
Biodiversity has major economic value. Most of these values are often not captured by the market.... more Biodiversity has major economic value. Most of these values are often not captured by the market. Hence, the potential of biodiversity is often underestimated. Such an underestimation is considered as one of the factors for rapid depletion of biodiversity and loss of habitats and species. Valuation of bio-resources would facilitate in identifying the real value of genetic resources and obtaining a reasonably better share of the overall benefits of genetic materials to the local communities, who are involved in its management. Accordingly, the Economic Valuation of Lippia adoensis was conducted implication for ABS. The result of this study identified the direct and indirect use values of Lippia adoensis. Majority of the respondents (98.33%) were willing to pay for use values of Lippia adoensis. Moreover, (80.8%) of the respondents were willingness to pay for Conservation of Lippia adoensis. Furthermore, 95(79.2%) of the respondents were willingness to pay for non-use value of Lippia ...
Journal of Agricultural Extension and Rural Development, 2017
Among all constraints of beekeeping, natural bee enemies are known to cause great damage to the l... more Among all constraints of beekeeping, natural bee enemies are known to cause great damage to the life and product of honeybees by causing disappearance and migration. A study was conducted in Bale from July, 2010 to June, 2012 in six districts with the objective of assessing the effect of natural bee enemies on the life of honeybees and their products. From each districts, 3 rural kebeles (RKs) and 10 beekeepers from each RKs were purposively selected and a total of 180 beekeeper participated. The selected beekeepers were interviewed using pre-tested structured questioners and single-visit-multiple formal survey method to collect the data. The collected data were analyzed using SPSS version 20 software and descriptive analysis method. Majority (96.86%) of the respondents in the study area followed traditional production system but only few beekeepers started transitional (0.88) and modern (2.26) beekeeping production system. In the study area, honeybees' enemies, agro-chemicals, lack of knowledge to manage bees and bee products, lack of bee colonies and bees poisoning from plants were identified as major beekeeping constraints. Respondents were asked to identify major honeybee pests and predators. Based on the result of this study, the existence of pests and predators were a major challenge to the honeybees and beekeepers in the study area. In all surveyed areas, the beekeepers reported the presence of Honey badger, spider, bee-eating birds, bee lice, beetles, wasps, Death Head hawks moth Mice and lizards in order of their decreasing importance. Traditionally, the beekeepers used their own control mechanisms of protecting these pests and predators like application of ash under the stand of the hive, hanging hives by rope on long trees, cleaning around the apiary site, using dog for large predators like honey badger, fencing their apiary site and mechanical like killing of the predators and pests, etc. About 72.6% of the respondents reported that honey production trend in the area decreased and 25.1 and 2.2% reported increasing and unchanged trend of production system, respectively. Despite the challenges of beekeeping, it is realized that there is potential of beekeeping in Bale, though the production system is traditional and there is an opportunity of improving the situation since there is plenty of beekeeping resources.
Journal of Agricultural Extension and Rural Development, 2016
Participatory evaluation of Queen Rearing using splitting technique (SQRT) at Ginnir District of ... more Participatory evaluation of Queen Rearing using splitting technique (SQRT) at Ginnir District of Bale Zone, Southeastern Ethiopia was conducted from 2013 to 2014. Two Beekeepers Research Group (BRG) each having 10 beekeepers were established at two sites, Ebisa and Kebena. Beekeepers were purposively selected based on their willingness, having bee colonies, indigenous knowledge of handling honeybee and trained on colony selection, honeybee biology, management, and health, procedure of queen rearing in the first phase and on spot practical queen rearing in the second training phase. Two Development Agents and three livestock experts participated in training. Evaluation of queen rearing was carried out at back yard of seven volunteer beekeepers (four at Ebisa and three at Kebena sites). About 85.71% of the multiplied established their selves and performed well. Average honey yield of 14.29 kg and 16.99 kg was obtained from daughter (new) and maternal colonies respectively. The beekeepers expressed that the technology is simple to operate, assist to generate additional income. This indicates that the technology got acceptance by farmers. Thus scaling up of this technology is paramount important.
Bioprocess Engineering, 2020
Pollination is an essential process in the production of seed plants, it results in a genetically... more Pollination is an essential process in the production of seed plants, it results in a genetically diverse production of offspring and its role is not well understood and appreciated in the local farming system. This study was conducted to evaluate the effect of honeybees pollination on Black cumin seed yield and yield related parameters at Sinana Agricultural Research center at on-station. The study had three experiment; these includes plots caged with honeybees (T1), plots caged without honeybees (T2) and open pollinated plots (T3). All collected data were analyzed using One-way-Analysis of Variance (ANOVA). In the study seven species of insects were identified as Nigella sativa visitors or pollinators with the most frequent visitors were honeybees at 11:30 am time and minimum at 3:00 pm on open pollinated plot. There were no significant different (P>0.05) on Date of blooming, Date of flowering, Flowering period, Primary and secondary branches among the three treatments. Whereas, there were a significant difference (P<0.05) on shading time, Number of capsule, Thousand kernel and total seed yield per hector. In general the present study showed that the highest seed yield/hector was achieved from crops caged with honeybees (20.20Qt/ha) and followed by open pollinated crop (17.54Qt/ha). The result also revealed that about 30.84% of seed yield advantage of Nigella sativa pollinated by honeybees over control/un pollinated by any insect. From this result it was concluded that visits of honeybees at flowering time of Nigella sativa have very helpful in boosting seed yield and yield related components of this crop.
International Journal of Aquaculture and Fishery Sciences, 2021
International Journal of Agricultural Science and Food Technology, 2016
Journal of Agricultural Extension and Rural Development, 2017
Journal of Energy and Natural Resources, 2020
The study was conducted to evaluate the physico-chemical properties of honey from Bale natural fo... more The study was conducted to evaluate the physico-chemical properties of honey from Bale natural forest Southeastern of Ethiopia in 2014/15. For analysis thirty (30) honey samples each of 0.5 to 1 kg were obtained from three locations considering the different agro-ecologies of Bale and compared against to the national and international standards. The physico-chemical characters evaluated were: Color, Moisture Content, Ash, Free Acidity, pH, Hydroxy methyl furfural, Reducing Sugar, Sucrose Content and Electric Conductivity. Though there were some significant variation (P<0.05) between the different agro-ecologies, all samples collected were found in the range of the national and international standard limits. The means value of honey sample collected were Color 92.43 (Amber), Moisture Content (18.80), Ash (0.21), Free Acidity (32.43), pH (3.75), Hydroxy methyl furfural (36.35), Apparent Reducing Sugar (66.41), Sucrose Content (4.48) and Electric Conductivity (0.69). Results obtaine...
European Journal of Biophysics, 2016
The study was conducted to evaluate physico-chemical properties of beeswax from Bale natural fore... more The study was conducted to evaluate physico-chemical properties of beeswax from Bale natural forest Southeastern of Ethiopia in 2014/15. For analysis fifteen (15) crude beeswax samples each of 1 to 3 kg were obtained from three locations considering the different agro-ecologies of Bale and compared against to the national and international standards. The physico-chemical characters evaluated were: melting point, specific gravity, refractive index, volatile matter, acid value, saponification value, ester value, and acid to ester ratio. Although there were some significant variation (P<0.05) between the different agro-ecologies, all samples collected were found in the range of the national and international standard limits. The means results of beeswax sample collected were Melting Point (62.39±0.12), Acid Value (22.33±0.39), Ester Value (75.58±0.84), Ester to Acid Ratio (3.38±0.07), Saponification Value (98.04±0.86), Specific gravity (0.9598±0.001), Refractive Index (1.4426±0.0002) and Volatile Matter (0.3335±0.027). Results obtained in this study, indicate that beeswax obtained from Bale show excellent quality characters according to the national and international standards. Hence, it is advisable to utilize the potentials for export market with better improved technology interventions.
MOJ Ecology & Environmental Sciences
Biodiversity has major economic value. Most of these values are often not captured by the market.... more Biodiversity has major economic value. Most of these values are often not captured by the market. Hence, the potential of biodiversity is often underestimated. Such an underestimation is considered as one of the factors for rapid depletion of biodiversity and loss of habitats and species. Valuation of bio-resources would facilitate in identifying the real value of genetic resources and obtaining a reasonably better share of the overall benefits of genetic materials to the local communities, who are involved in its management. Accordingly, the Economic Valuation of Lippia adoensis was conducted implication for ABS. The result of this study identified the direct and indirect use values of Lippia adoensis. Majority of the respondents (98.33%) were willing to pay for use values of Lippia adoensis. Moreover, (80.8%) of the respondents were willingness to pay for Conservation of Lippia adoensis. Furthermore, 95(79.2%) of the respondents were willingness to pay for non-use value of Lippia ...
Journal of Agricultural Extension and Rural Development, 2017
Among all constraints of beekeeping, natural bee enemies are known to cause great damage to the l... more Among all constraints of beekeeping, natural bee enemies are known to cause great damage to the life and product of honeybees by causing disappearance and migration. A study was conducted in Bale from July, 2010 to June, 2012 in six districts with the objective of assessing the effect of natural bee enemies on the life of honeybees and their products. From each districts, 3 rural kebeles (RKs) and 10 beekeepers from each RKs were purposively selected and a total of 180 beekeeper participated. The selected beekeepers were interviewed using pre-tested structured questioners and single-visit-multiple formal survey method to collect the data. The collected data were analyzed using SPSS version 20 software and descriptive analysis method. Majority (96.86%) of the respondents in the study area followed traditional production system but only few beekeepers started transitional (0.88) and modern (2.26) beekeeping production system. In the study area, honeybees' enemies, agro-chemicals, lack of knowledge to manage bees and bee products, lack of bee colonies and bees poisoning from plants were identified as major beekeeping constraints. Respondents were asked to identify major honeybee pests and predators. Based on the result of this study, the existence of pests and predators were a major challenge to the honeybees and beekeepers in the study area. In all surveyed areas, the beekeepers reported the presence of Honey badger, spider, bee-eating birds, bee lice, beetles, wasps, Death Head hawks moth Mice and lizards in order of their decreasing importance. Traditionally, the beekeepers used their own control mechanisms of protecting these pests and predators like application of ash under the stand of the hive, hanging hives by rope on long trees, cleaning around the apiary site, using dog for large predators like honey badger, fencing their apiary site and mechanical like killing of the predators and pests, etc. About 72.6% of the respondents reported that honey production trend in the area decreased and 25.1 and 2.2% reported increasing and unchanged trend of production system, respectively. Despite the challenges of beekeeping, it is realized that there is potential of beekeeping in Bale, though the production system is traditional and there is an opportunity of improving the situation since there is plenty of beekeeping resources.
Journal of Agricultural Extension and Rural Development, 2016
Participatory evaluation of Queen Rearing using splitting technique (SQRT) at Ginnir District of ... more Participatory evaluation of Queen Rearing using splitting technique (SQRT) at Ginnir District of Bale Zone, Southeastern Ethiopia was conducted from 2013 to 2014. Two Beekeepers Research Group (BRG) each having 10 beekeepers were established at two sites, Ebisa and Kebena. Beekeepers were purposively selected based on their willingness, having bee colonies, indigenous knowledge of handling honeybee and trained on colony selection, honeybee biology, management, and health, procedure of queen rearing in the first phase and on spot practical queen rearing in the second training phase. Two Development Agents and three livestock experts participated in training. Evaluation of queen rearing was carried out at back yard of seven volunteer beekeepers (four at Ebisa and three at Kebena sites). About 85.71% of the multiplied established their selves and performed well. Average honey yield of 14.29 kg and 16.99 kg was obtained from daughter (new) and maternal colonies respectively. The beekeepers expressed that the technology is simple to operate, assist to generate additional income. This indicates that the technology got acceptance by farmers. Thus scaling up of this technology is paramount important.
Bioprocess Engineering, 2020
Pollination is an essential process in the production of seed plants, it results in a genetically... more Pollination is an essential process in the production of seed plants, it results in a genetically diverse production of offspring and its role is not well understood and appreciated in the local farming system. This study was conducted to evaluate the effect of honeybees pollination on Black cumin seed yield and yield related parameters at Sinana Agricultural Research center at on-station. The study had three experiment; these includes plots caged with honeybees (T1), plots caged without honeybees (T2) and open pollinated plots (T3). All collected data were analyzed using One-way-Analysis of Variance (ANOVA). In the study seven species of insects were identified as Nigella sativa visitors or pollinators with the most frequent visitors were honeybees at 11:30 am time and minimum at 3:00 pm on open pollinated plot. There were no significant different (P>0.05) on Date of blooming, Date of flowering, Flowering period, Primary and secondary branches among the three treatments. Whereas, there were a significant difference (P<0.05) on shading time, Number of capsule, Thousand kernel and total seed yield per hector. In general the present study showed that the highest seed yield/hector was achieved from crops caged with honeybees (20.20Qt/ha) and followed by open pollinated crop (17.54Qt/ha). The result also revealed that about 30.84% of seed yield advantage of Nigella sativa pollinated by honeybees over control/un pollinated by any insect. From this result it was concluded that visits of honeybees at flowering time of Nigella sativa have very helpful in boosting seed yield and yield related components of this crop.
International Journal of Aquaculture and Fishery Sciences, 2021
International Journal of Agricultural Science and Food Technology, 2016
Journal of Agricultural Extension and Rural Development, 2017
Journal of Energy and Natural Resources, 2020
The study was conducted to evaluate the physico-chemical properties of honey from Bale natural fo... more The study was conducted to evaluate the physico-chemical properties of honey from Bale natural forest Southeastern of Ethiopia in 2014/15. For analysis thirty (30) honey samples each of 0.5 to 1 kg were obtained from three locations considering the different agro-ecologies of Bale and compared against to the national and international standards. The physico-chemical characters evaluated were: Color, Moisture Content, Ash, Free Acidity, pH, Hydroxy methyl furfural, Reducing Sugar, Sucrose Content and Electric Conductivity. Though there were some significant variation (P<0.05) between the different agro-ecologies, all samples collected were found in the range of the national and international standard limits. The means value of honey sample collected were Color 92.43 (Amber), Moisture Content (18.80), Ash (0.21), Free Acidity (32.43), pH (3.75), Hydroxy methyl furfural (36.35), Apparent Reducing Sugar (66.41), Sucrose Content (4.48) and Electric Conductivity (0.69). Results obtaine...
European Journal of Biophysics, 2016
The study was conducted to evaluate physico-chemical properties of beeswax from Bale natural fore... more The study was conducted to evaluate physico-chemical properties of beeswax from Bale natural forest Southeastern of Ethiopia in 2014/15. For analysis fifteen (15) crude beeswax samples each of 1 to 3 kg were obtained from three locations considering the different agro-ecologies of Bale and compared against to the national and international standards. The physico-chemical characters evaluated were: melting point, specific gravity, refractive index, volatile matter, acid value, saponification value, ester value, and acid to ester ratio. Although there were some significant variation (P<0.05) between the different agro-ecologies, all samples collected were found in the range of the national and international standard limits. The means results of beeswax sample collected were Melting Point (62.39±0.12), Acid Value (22.33±0.39), Ester Value (75.58±0.84), Ester to Acid Ratio (3.38±0.07), Saponification Value (98.04±0.86), Specific gravity (0.9598±0.001), Refractive Index (1.4426±0.0002) and Volatile Matter (0.3335±0.027). Results obtained in this study, indicate that beeswax obtained from Bale show excellent quality characters according to the national and international standards. Hence, it is advisable to utilize the potentials for export market with better improved technology interventions.