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Papers by Wondimu Lelisa

Research paper thumbnail of Comparative Study on Removal Efficiency of Methylene Blue from Wastewater by using Nano-Scaled Sugarcane Bagasse Ash and Jema Silica Sand

International Journal of Water and Wastewater Treatment, 2022

The widely available and easily accessible natural resources are very important to remove organic... more The widely available and easily accessible natural resources are very important to remove organic dyes from wastewater. Here in this work, Methyele Blue (MB) removal efficiency of Jemma Silica Sand (JSS) and Sugar Cane Bagasse ash (SCBA) from aqueous solutions was investigated. The XRD patterns revealed that both JSS and SCBA are crystalline, but the crystalline size of JSS is 56.27 nm and that of SCBA is 70.90 nm. In addition to the percentage of silicon dioxide in JSS was 98% and in that of SCBA was 71.5% as confirmed by XRF results. The morphology and elemental composition of the two materials were revealed by SEM and EDX. The MB removal efficiency of SCBA (~99.14%) is greater than that of JSS (~93.75) because of its higher porosities nature. The adsorption of MB by SCBA follows the Freundlich isotherm model and pseudo-second-order kinetic model indicating chemisorption. Therefore, SCBA is promising absorbent for removing MB from wastewater because of its efficient, cost-effectiv...

Research paper thumbnail of Assessment of pesticides use effects on honeybee colonies and its financial impact in some selected districts of Bale Zone, South Eastern Ethiopia

International Journal of Aquaculture and Fishery Sciences, 2021

Research paper thumbnail of The Effect of Honeybee (Apismellifera) Pollination in Enhancing Yield of Nigella sativa (Darbera Variety) in the High Land of Bale

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.

Research paper thumbnail of The Role of Honeybee (Apis mellifera) Pollination in Enhancing Seed Yield and Yield Related Parameters of Coriandrum sativum L

Journal of Energy and Natural Resources, 2020

Coriander (Coriandrum sativum L.) is one of the most important annual spice and medicinal herbpla... more Coriander (Coriandrum sativum L.) is one of the most important annual spice and medicinal herbplant. It is an open pollinated crop and honeybees are effective pollinators for open pollinated crops because of a lot of nectar and pollens are available on the flowers of Coriandrum sativum. An experiment was conducted to evaluate the effect of honeybees pollination on Coriandrum sativum 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). There were no significant different (P>0.05) on Date of blooming, Date of flowering,, Primary and secondary branches among the three treatments. Whereas, there were a significant difference (P<0.05) on Flowering period, shading time, Number of capsule, Thousand kernel weight and total seed yield per hector. The result also revealed that about 29.70% of seed yield advantage of Coriandrum sativum pollinated by honeybees over control/un pollinated by any insect. From this result it was concluded that visits of honeybees at flowering time of Coriandrum sativum have very helpful in increasing seed yield and yield related components of this crop.

Research paper thumbnail of Comparative Study on Removal Efficiency of Methylene Blue from Wastewater by using Nano-Scaled Sugarcane Bagasse Ash and Jema Silica Sand

International Journal of Water and Wastewater Treatment, 2022

The widely available and easily accessible natural resources are very important to remove organic... more The widely available and easily accessible natural resources are very important to remove organic dyes from wastewater. Here in this work, Methyele Blue (MB) removal efficiency of Jemma Silica Sand (JSS) and Sugar Cane Bagasse ash (SCBA) from aqueous solutions was investigated. The XRD patterns revealed that both JSS and SCBA are crystalline, but the crystalline size of JSS is 56.27 nm and that of SCBA is 70.90 nm. In addition to the percentage of silicon dioxide in JSS was 98% and in that of SCBA was 71.5% as confirmed by XRF results. The morphology and elemental composition of the two materials were revealed by SEM and EDX. The MB removal efficiency of SCBA (~99.14%) is greater than that of JSS (~93.75) because of its higher porosities nature. The adsorption of MB by SCBA follows the Freundlich isotherm model and pseudo-second-order kinetic model indicating chemisorption. Therefore, SCBA is promising absorbent for removing MB from wastewater because of its efficient, cost-effectiv...

Research paper thumbnail of Assessment of pesticides use effects on honeybee colonies and its financial impact in some selected districts of Bale Zone, South Eastern Ethiopia

International Journal of Aquaculture and Fishery Sciences, 2021

Research paper thumbnail of The Effect of Honeybee (Apismellifera) Pollination in Enhancing Yield of Nigella sativa (Darbera Variety) in the High Land of Bale

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.

Research paper thumbnail of The Role of Honeybee (Apis mellifera) Pollination in Enhancing Seed Yield and Yield Related Parameters of Coriandrum sativum L

Journal of Energy and Natural Resources, 2020

Coriander (Coriandrum sativum L.) is one of the most important annual spice and medicinal herbpla... more Coriander (Coriandrum sativum L.) is one of the most important annual spice and medicinal herbplant. It is an open pollinated crop and honeybees are effective pollinators for open pollinated crops because of a lot of nectar and pollens are available on the flowers of Coriandrum sativum. An experiment was conducted to evaluate the effect of honeybees pollination on Coriandrum sativum 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). There were no significant different (P>0.05) on Date of blooming, Date of flowering,, Primary and secondary branches among the three treatments. Whereas, there were a significant difference (P<0.05) on Flowering period, shading time, Number of capsule, Thousand kernel weight and total seed yield per hector. The result also revealed that about 29.70% of seed yield advantage of Coriandrum sativum pollinated by honeybees over control/un pollinated by any insect. From this result it was concluded that visits of honeybees at flowering time of Coriandrum sativum have very helpful in increasing seed yield and yield related components of this crop.

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