Dugasa Gerenfes - Academia.edu (original) (raw)

Papers by Dugasa Gerenfes

Journal of Biology, Agriculture and Healthcare, 2018

The study was focused on the tissue organs of two varieties and water sample from both lakes. The... more The study was focused on the tissue organs of two varieties and water sample from both lakes. The sample were collected from three sampling sites each lakes. The P H and EC of the water sample were analyzed by using PHmeter and electrical conductivity meter. The digestion procedure was used the mixture of HNO 3-H 2 O 2 (12 mL) for gill, kidney, liver and 1:2.5 mL mixture of HNO 3-HCl for water samples used. Concentrations of six metals in water and their accumulation in the edible tissue of Tilapia (Oreochromis niloticus) and Barbus (Labeobarbus intermedius) fish species were determined using Flame Atomic Absorption Spectroscopy. The results revealed that the average heavy metal concentrations in water samples were; Zn 0.017, Cu 0.077, Fe 7.50, Cr 0.033, Cd 0.264 and Pb 1.731 mg/L respectivelty. The highest concentrations of iron (Fe) and lead (Pb) were observed at Chamo Park and Sile sites, respectively. The average contents of heavy metals in fish samples were; Zn 0.062, Cu 0.047, Fe 2.270, Cr 0.041, Cd 0.045 and Pb1.78 mg/Kg in both fish species. The highest accumulations of iron (Fe) and lead (Pb) concentration were observed in liver and gill of Tilapia fish from Chamo Lake. There was no significant difference between the two lakes in accumulating trace metals.

HAL (Le Centre pour la Communication Scientifique Directe), 2021

The presence of genotype by environment interaction complicates selection of superior genotypes. ... more The presence of genotype by environment interaction complicates selection of superior genotypes. The study was conducted to evaluate the effect of GEI and its magnitude on the grain quality of bread wheat genotypes in Ethiopia. 15 bread wheat genotypes were evaluated using RCBD with 4 replications at 6 different locations in Ethiopia. Analysis of variance showed highly significant (P<0.001) differences among genotype, environment and its interactions for investigated quality properties. The results showed that the genotype ETBW9045 had excellent HLW followed by ETBW8070 (73.38 kg/hl) and ETBW8065 (73.02 kg/hl), while the lowest mean values of HLW was obtained from genotype ETBW9464 (66.58 kg/hl) and genotype ETBW9470 had excellent TKW followed by ETBW8427 (39.22 g), while the lowest was that of ETBW8075 (27.32 g). The mean value of moisture content of wheat genotype was ranged from 10.5% to 10.99%. In this result protein content varied from 13.93 to 15.05%. Genotype ETBW8065, ETB...

chemistry and materials research, 2018

The fish organs and water was collected from three sampling sites of Lakes Chamo and Abaya. A pro... more The fish organs and water was collected from three sampling sites of Lakes Chamo and Abaya. A procedure consuming 12 mL mixture of HNO-H O for gill, kidney, liver and 1:2.5 mLmixture of HNO-HCl for 3 2 2 3 water samples for digestion of was developed. Concentrations of sixmetals in water and their accumulation in the edible tissue of Tilapia (Oreochromis niloticus)and Barbus (Labeobarbus intermedius) fish species were determined using Flame Atomic Absorption Spectroscopy. The results revealed that theaverage heavy metal concentrations in water samples were; Zn 0.017, Cu 0.077, Fe 7.50, Cr0.033, Cd 0.264 and Pb 1.731 mg/L respectivelty. The highest concentrations of iron (Fe) andlead (Pb) were observed at Chamo Park and Sile sites, respectively. The average contents ofheavy metals in fish samples were; Zn 0.062, Cu 0.047, Fe 2.270, Cr 0.041, Cd 0.045 and Pb1.78 mg/Kg in both fish species. The highest accumulations of iron (Fe) and lead (Pb)concentration were observed in liver and gill of Tilapia fish from Chamo Lake. There was no significant difference between the two lakes in accumulating trace metals.

American Journal of Agriculture and Forestry, 2022

Field experiments were conducted at Kulumsa station of Tiyo district, southeastern Ethiopia in 20... more Field experiments were conducted at Kulumsa station of Tiyo district, southeastern Ethiopia in 2017 and 2018 offseason, to test the effect of fertilizer products on yield and yield components of potato and to evaluate the possibility of incorporating the products into input system for agricultural production. The treatment set up were 1) No input (negative control), 2) recommended rate of fertilizer (RNP) (111, 39 and 16.5 Kg ha-1 N. P and S, respectively) from NPS and Urea, 3) RNP + 1.8 L ha-1 LF; 4) RNP + 3 L ha-1 LF, and 5) RNP + 4.2 L ha-1 LF on growth performance and yield. The results showed that treatment effects were significant for potato total and marketable tuber yields. Since the effect of fertilizers on the yield of potato was consistent across seasons in Kulumsa station, combined analysis has been conducted. The highest total (46.1 t ha-1) and marketable (42.2 t ha-1) tuber yields were recorded with the application of recommended fertilizer (RNP) + 1.8 L ha-1 LF and (RNP) + 3L ha-1 LF. This treatment was even statistically superior to application of RNP alone. Compared to the control and RNP treatments, application of inorganic fertilizers with 1.8 L ha-1 LF gave 23.4 and 14.1% more total tuber yield of potato, respectively. Similarly, RNP + 3.0L ha-1 LF gave 20.9 and 13.7 % more marketable tuber yield of potato over the control and recommended fertilizer from inorganic sources (NPS and urea) treatments, respectively. The result further showed that application of 1.8 L ha-1 LF with RNP fertilizer gave total and marketable potato tuber yields which is statistically at par with yields obtained from NPS plus 3.0 L ha-1 LF. The lowest total (35.3 t ha-1) and marketable (33.4 t ha-1) tuber yields of potato were harvested from the plots that received neither inorganic nor fertilizers. Therefore, integrated application of liquid fertilizer along with full dose of inorganic fertilizers has been recommended for increased productivity of potato in the southeastern highlands of Ethiopia.

International journal of horticulture and food science, 2022

Soil organic carbon (SOC) is an important property in regard to soil and environmental quality. T... more Soil organic carbon (SOC) is an important property in regard to soil and environmental quality. There are many methods to determine SOC. In this study, Walkley Black and Loss on Ignition methods were chosen and sixty sub-samples representing were collected from three different parts of Arsi zone areas of Ethiopia, and then nine a composite samples were used for SOC determination methods. The variables were equipment, accuracy, efficiency, complexity, cost and environmental effect. Walkley-Black and loss on ignition (LOI) were determined on whole soils mesh size of 2 mm. From the two selected methods Loss on Ignition was the accurate and simple method for determining soil organic carbon that do not involve the use of chemicals that damage the environment are required. Walkley-Black method is a wet oxidation procedure which is relatively accurate and popular method for the determination of soil organic matter but it is time-consuming, costly and also has a high potential to cause environmental pollution because of disposal of chromium and strong acids. Therefore, loss-onignition procedure is a simple and cheap method for SOM estimation, which also avoids chromic acid wastes, deserves more attention. The aims of this research were to study the statistical relationships between SOC determined with the LOI and WB methods to compare the spatial variability of SOC in the selected study area. One way ANOVA was used for the significance test between the two methods and there was a significant difference between the values determined by the Walkley Black and Loss on Ignition methods, at a confidence level of 95%.

International journal of Bio-resource and Stress Management, Mar 17, 2023

Legal restrictions are imposed on the public sharing of raw data. However, authors have full righ... more Legal restrictions are imposed on the public sharing of raw data. However, authors have full right to transfer or share the data in raw form upon request subject to either meeting the conditions of the original consents and the original research study. Further, access of data needs to meet whether the user complies with the ethical and legal obligations as data controllers to allow for secondary use of the data outside of the original study.

International Journal of Bio-resource and Stress Management

The present study was conducted at the Kulumsa Soil and Plant Analysis Laboratory, Ethiopia from ... more The present study was conducted at the Kulumsa Soil and Plant Analysis Laboratory, Ethiopia from January 2021 to January 2022 to identify the appropriate storage duration of soil samples and recommend good storage materials for soil laboratories. The effects of soil sample storage on the pH, TN (%), OC (%), and available phosphorus were studied for 12 months. The highest and lowest concentrations of pH, TN (%), OC (%), and available phosphorus at the Kulumsa site were: 6.29 and 5.82; 0.17 and 0.12%; 2.93 and 1.70%; 22.53 and 10.88 respectively. At the Arsi Robe site, the highest and lowest concentrations of pH, TN (%), OC (%), and available phosphorus were 6.54 and 5.97, 0.16 and 0.12%, 3.02 and 1.00%, and 19.09 and 10.39 respectively. The highest and lowest concentrations of pH, TN (%), OC (%), and available phosphorus (mg kg1) at the Dera site were 9.14 and 8.47; 0.11, 0.07%; 4.36, 1.04%; and 111.85 and 75.37 respectively. Soil samples were stored in three storage containers with ...

International Journal of Horticulture and Food Science

American Journal of Agriculture and Forestry

Field experiments were conducted at Kulumsa station of Tiyo district, southeastern Ethiopia in 20... more Field experiments were conducted at Kulumsa station of Tiyo district, southeastern Ethiopia in 2017 and 2018 offseason, to test the effect of fertilizer products on yield and yield components of potato and to evaluate the possibility of incorporating the products into input system for agricultural production. The treatment set up were 1) No input (negative control), 2) recommended rate of fertilizer (RNP) (111, 39 and 16.5 Kg ha-1 N. P and S, respectively) from NPS and Urea, 3) RNP + 1.8 L ha-1 LF; 4) RNP + 3 L ha-1 LF, and 5) RNP + 4.2 L ha-1 LF on growth performance and yield. The results showed that treatment effects were significant for potato total and marketable tuber yields. Since the effect of fertilizers on the yield of potato was consistent across seasons in Kulumsa station, combined analysis has been conducted. The highest total (46.1 t ha-1) and marketable (42.2 t ha-1) tuber yields were recorded with the application of recommended fertilizer (RNP) + 1.8 L ha-1 LF and (RNP) + 3L ha-1 LF. This treatment was even statistically superior to application of RNP alone. Compared to the control and RNP treatments, application of inorganic fertilizers with 1.8 L ha-1 LF gave 23.4 and 14.1% more total tuber yield of potato, respectively. Similarly, RNP + 3.0L ha-1 LF gave 20.9 and 13.7 % more marketable tuber yield of potato over the control and recommended fertilizer from inorganic sources (NPS and urea) treatments, respectively. The result further showed that application of 1.8 L ha-1 LF with RNP fertilizer gave total and marketable potato tuber yields which is statistically at par with yields obtained from NPS plus 3.0 L ha-1 LF. The lowest total (35.3 t ha-1) and marketable (33.4 t ha-1) tuber yields of potato were harvested from the plots that received neither inorganic nor fertilizers. Therefore, integrated application of liquid fertilizer along with full dose of inorganic fertilizers has been recommended for increased productivity of potato in the southeastern highlands of Ethiopia.

Applied microbiology: open access, 2019

International Journal of Bioorganic Chemistry, 2021

This review discusses about laboratory soil analysis and soil mineral management in different Org... more This review discusses about laboratory soil analysis and soil mineral management in different Organic farming. The objective of this review were laboratory mineral soil analysis and soil mineral management in organic farming was to draw together all the available relevant research findings in order to develop the knowledge and expertise of organic advisers and thereby to improve soil management practice on organic farms. There are several methods available for measuring total N in soils, mineral N in soils and mineralization potential. Chemical extractions which aim to establish the pool of nitrogen to plants include the use of potassium salts, K 2 SO 4 to extract inorganic and labile organic N pools. Soil P tests are commonly used to assess soil nutrient availability and to assist in fertilizer recommendations. Available K measured by ammonium nitrate gave a good indication of the plant available K in soil; crops showed a response to increasing available K and continued cropping caused a decline in the pool of available K in soil. Soil analysis based on chemical analysis is a snapshot of nutrient pools. It is normally reported in mg/l of soil. Soils are sampled and analysed and digital maps provided to the farmer. This then allows targeted use of inputs to correct nutrient deficiencies or acidity. While this is primarily used in conventional farming for fertiliser application it is now also being used increasingly in organic farming.

Biochemistry and Molecular Biology, 2019

Samples of fish organs and water were collected from three sampling sites of Lakes Chamo and Abay... more Samples of fish organs and water were collected from three sampling sites of Lakes Chamo and Abaya. A procedure consuming 12 mL mixture of HNO 3-H 2 O 2 for gill, kidney, liver and 1:2.5 mL mixture of HNO 3-HCl for water samples for digestion of was developed. Concentrations of three metals in water and their accumulation in Tilapia (Oreochromis niloticus) and Barbus (Labeobarbus intermedius) fish species were determined using Flame Atomic Absorption Spectroscopy. Concentrations of metals in gills, kidney, liver and water varied (mg/kg): Zn 0.

Asian Journal of Plant Science & Research, 2021

The presence of genotype by environment interaction complicates selection of superior genotypes. ... more The presence of genotype by environment interaction complicates selection of superior genotypes. The study was conducted to evaluate the effect of GEI and its magnitude on the grain quality of bread wheat genotypes in Ethiopia. 15 bread wheat genotypes were evaluated using RCBD with 4 replications at 6 different locations in Ethiopia. Analysis of variance showed highly significant (P<0.001) differences among genotype, environment and its interactions for investigated quality properties. The results showed that the genotype ETBW9045 had excellent HLW followed by ETBW8070 (73.38 kg/hl) and ETBW8065 (73.02 kg/hl), while the lowest mean values of HLW was obtained from genotype ETBW9464 (66.58 kg/hl) and genotype ETBW9470 had excellent TKW followed by ETBW8427 (39.22 g), while the lowest was that of ETBW8075 (27.32 g). The mean value of moisture content of wheat genotype was ranged from 10.5% to 10.99%. In this result protein content varied from 13.93 to 15.05%. Genotype ETBW8065, ETB...

International Journal of Bioorganic Chemistry, 2021

This review discusses about laboratory soil analysis and soil mineral management in different Org... more This review discusses about laboratory soil analysis and soil mineral management in different Organic farming. The objective of this review were laboratory mineral soil analysis and soil mineral management in organic farming was to draw together all the available relevant research findings in order to develop the knowledge and expertise of organic advisers and thereby to improve soil management practice on organic farms. There are several methods available for measuring total N in soils, mineral N in soils and mineralization potential. Chemical extractions which aim to establish the pool of nitrogen to plants include the use of potassium salts, K2SO4 to extract inorganic and labile organic N pools. Soil P tests are commonly used to assess soil nutrient availability and to assist in fertilizer recommendations. Available K measured by ammonium nitrate gave a good indication of the plant available K in soil; crops showed a response to increasing available K and continued cropping cause...

Journal of Biology, Agriculture and Healthcare, 2021

This review discusses about phosphorus and zinc fertilizer consumption led to increasing yield an... more This review discusses about phosphorus and zinc fertilizer consumption led to increasing yield and yield components of the crops. The objectives of this review were focuses on the impact of application of phosphorus and zinc fertilizers on yield and yield components of crop plants and their importance on crop performance enhancement. The other important aspect of phosphorus and zinc nutrition is the interaction effect between them, especially in soils marginally deficient in phosphorus and zinc. When phosphorus and zinc were fertilized together, to such soils, crop yields are reported to increase with positive interaction of phosphorus and zinc. The Applications of zinc and phosphorus fertilizers led to increasing yield and yield components of crops such as height, number of tiller, Biomass yield, the number of filled grain spike, yield in ha, spike weight in plant, grain length, spike length in m 2 and harvest index etc. Thus, it is important to apply the effect of P and Zn nutrien...

Biochemistry and Molecular Biology, 2019

Samples of fish organs and water were collected from three sampling sites of Lakes Chamo and Abay... more Samples of fish organs and water were collected from three sampling sites of Lakes Chamo and Abaya. A procedure consuming 12 mL mixture of HNO 3-H 2 O 2 for gill, kidney, liver and 1:2.5 mL mixture of HNO 3-HCl for water samples for digestion of was developed. Concentrations of three metals in water and their accumulation in Tilapia (Oreochromis niloticus) and Barbus (Labeobarbus intermedius) fish species were determined using Flame Atomic Absorption Spectroscopy. Concentrations of metals in gills, kidney, liver and water varied (mg/kg): Zn 0.

Field pea (Pisum sativum L.) is among the major food crops grown globally for its high protein co... more Field pea (Pisum sativum L.) is among the major food crops grown globally for its high protein content. However there is no detailed nutrient composition profile and recently challenged with a storage pest, Callosobruchus chinensis L. This study was carried out to know the nutrient composition and quantify the damage caused by the pest and identify the sources of resistance in the genotypes in Ethiopia. The study was conducted at Kulumsa Agricultural Research Center (KARC) in Ethiopia, during 2019. Nutrients were estimated in laboratory analysis and callosobruchus chinensis L. was used to challenge 26 field pea genotypes under no choice condition, in the laboratory. Results showed a significant differences (p 10) (Table 4). Genotypes; fpcoll-1/07, fpcoll-2/07, fpcoll-28/07, fpcoll-29/07, fpcoll-30/07, fpcoll-31/07, fpcoll-40/07, fpcoll-41/07, fpcoll-42/07/ had high values (ppm) for; ca, k, mg, and zn, whereas all improved, introduced crossed line of considered field peal genotypes h...

Journal of Biology, Agriculture and Healthcare, 2018

The study was focused on the tissue organs of two varieties and water sample from both lakes. The... more The study was focused on the tissue organs of two varieties and water sample from both lakes. The sample were collected from three sampling sites each lakes. The P H and EC of the water sample were analyzed by using PHmeter and electrical conductivity meter. The digestion procedure was used the mixture of HNO 3-H 2 O 2 (12 mL) for gill, kidney, liver and 1:2.5 mL mixture of HNO 3-HCl for water samples used. Concentrations of six metals in water and their accumulation in the edible tissue of Tilapia (Oreochromis niloticus) and Barbus (Labeobarbus intermedius) fish species were determined using Flame Atomic Absorption Spectroscopy. The results revealed that the average heavy metal concentrations in water samples were; Zn 0.017, Cu 0.077, Fe 7.50, Cr 0.033, Cd 0.264 and Pb 1.731 mg/L respectivelty. The highest concentrations of iron (Fe) and lead (Pb) were observed at Chamo Park and Sile sites, respectively. The average contents of heavy metals in fish samples were; Zn 0.062, Cu 0.047, Fe 2.270, Cr 0.041, Cd 0.045 and Pb1.78 mg/Kg in both fish species. The highest accumulations of iron (Fe) and lead (Pb) concentration were observed in liver and gill of Tilapia fish from Chamo Lake. There was no significant difference between the two lakes in accumulating trace metals.

HAL (Le Centre pour la Communication Scientifique Directe), 2021

The presence of genotype by environment interaction complicates selection of superior genotypes. ... more The presence of genotype by environment interaction complicates selection of superior genotypes. The study was conducted to evaluate the effect of GEI and its magnitude on the grain quality of bread wheat genotypes in Ethiopia. 15 bread wheat genotypes were evaluated using RCBD with 4 replications at 6 different locations in Ethiopia. Analysis of variance showed highly significant (P&amp;amp;amp;lt;0.001) differences among genotype, environment and its interactions for investigated quality properties. The results showed that the genotype ETBW9045 had excellent HLW followed by ETBW8070 (73.38 kg/hl) and ETBW8065 (73.02 kg/hl), while the lowest mean values of HLW was obtained from genotype ETBW9464 (66.58 kg/hl) and genotype ETBW9470 had excellent TKW followed by ETBW8427 (39.22 g), while the lowest was that of ETBW8075 (27.32 g). The mean value of moisture content of wheat genotype was ranged from 10.5% to 10.99%. In this result protein content varied from 13.93 to 15.05%. Genotype ETBW8065, ETB...

chemistry and materials research, 2018

The fish organs and water was collected from three sampling sites of Lakes Chamo and Abaya. A pro... more The fish organs and water was collected from three sampling sites of Lakes Chamo and Abaya. A procedure consuming 12 mL mixture of HNO-H O for gill, kidney, liver and 1:2.5 mLmixture of HNO-HCl for 3 2 2 3 water samples for digestion of was developed. Concentrations of sixmetals in water and their accumulation in the edible tissue of Tilapia (Oreochromis niloticus)and Barbus (Labeobarbus intermedius) fish species were determined using Flame Atomic Absorption Spectroscopy. The results revealed that theaverage heavy metal concentrations in water samples were; Zn 0.017, Cu 0.077, Fe 7.50, Cr0.033, Cd 0.264 and Pb 1.731 mg/L respectivelty. The highest concentrations of iron (Fe) andlead (Pb) were observed at Chamo Park and Sile sites, respectively. The average contents ofheavy metals in fish samples were; Zn 0.062, Cu 0.047, Fe 2.270, Cr 0.041, Cd 0.045 and Pb1.78 mg/Kg in both fish species. The highest accumulations of iron (Fe) and lead (Pb)concentration were observed in liver and gill of Tilapia fish from Chamo Lake. There was no significant difference between the two lakes in accumulating trace metals.

American Journal of Agriculture and Forestry, 2022

Field experiments were conducted at Kulumsa station of Tiyo district, southeastern Ethiopia in 20... more Field experiments were conducted at Kulumsa station of Tiyo district, southeastern Ethiopia in 2017 and 2018 offseason, to test the effect of fertilizer products on yield and yield components of potato and to evaluate the possibility of incorporating the products into input system for agricultural production. The treatment set up were 1) No input (negative control), 2) recommended rate of fertilizer (RNP) (111, 39 and 16.5 Kg ha-1 N. P and S, respectively) from NPS and Urea, 3) RNP + 1.8 L ha-1 LF; 4) RNP + 3 L ha-1 LF, and 5) RNP + 4.2 L ha-1 LF on growth performance and yield. The results showed that treatment effects were significant for potato total and marketable tuber yields. Since the effect of fertilizers on the yield of potato was consistent across seasons in Kulumsa station, combined analysis has been conducted. The highest total (46.1 t ha-1) and marketable (42.2 t ha-1) tuber yields were recorded with the application of recommended fertilizer (RNP) + 1.8 L ha-1 LF and (RNP) + 3L ha-1 LF. This treatment was even statistically superior to application of RNP alone. Compared to the control and RNP treatments, application of inorganic fertilizers with 1.8 L ha-1 LF gave 23.4 and 14.1% more total tuber yield of potato, respectively. Similarly, RNP + 3.0L ha-1 LF gave 20.9 and 13.7 % more marketable tuber yield of potato over the control and recommended fertilizer from inorganic sources (NPS and urea) treatments, respectively. The result further showed that application of 1.8 L ha-1 LF with RNP fertilizer gave total and marketable potato tuber yields which is statistically at par with yields obtained from NPS plus 3.0 L ha-1 LF. The lowest total (35.3 t ha-1) and marketable (33.4 t ha-1) tuber yields of potato were harvested from the plots that received neither inorganic nor fertilizers. Therefore, integrated application of liquid fertilizer along with full dose of inorganic fertilizers has been recommended for increased productivity of potato in the southeastern highlands of Ethiopia.

International journal of horticulture and food science, 2022

Soil organic carbon (SOC) is an important property in regard to soil and environmental quality. T... more Soil organic carbon (SOC) is an important property in regard to soil and environmental quality. There are many methods to determine SOC. In this study, Walkley Black and Loss on Ignition methods were chosen and sixty sub-samples representing were collected from three different parts of Arsi zone areas of Ethiopia, and then nine a composite samples were used for SOC determination methods. The variables were equipment, accuracy, efficiency, complexity, cost and environmental effect. Walkley-Black and loss on ignition (LOI) were determined on whole soils mesh size of 2 mm. From the two selected methods Loss on Ignition was the accurate and simple method for determining soil organic carbon that do not involve the use of chemicals that damage the environment are required. Walkley-Black method is a wet oxidation procedure which is relatively accurate and popular method for the determination of soil organic matter but it is time-consuming, costly and also has a high potential to cause environmental pollution because of disposal of chromium and strong acids. Therefore, loss-onignition procedure is a simple and cheap method for SOM estimation, which also avoids chromic acid wastes, deserves more attention. The aims of this research were to study the statistical relationships between SOC determined with the LOI and WB methods to compare the spatial variability of SOC in the selected study area. One way ANOVA was used for the significance test between the two methods and there was a significant difference between the values determined by the Walkley Black and Loss on Ignition methods, at a confidence level of 95%.

International journal of Bio-resource and Stress Management, Mar 17, 2023

Legal restrictions are imposed on the public sharing of raw data. However, authors have full righ... more Legal restrictions are imposed on the public sharing of raw data. However, authors have full right to transfer or share the data in raw form upon request subject to either meeting the conditions of the original consents and the original research study. Further, access of data needs to meet whether the user complies with the ethical and legal obligations as data controllers to allow for secondary use of the data outside of the original study.

International Journal of Bio-resource and Stress Management

The present study was conducted at the Kulumsa Soil and Plant Analysis Laboratory, Ethiopia from ... more The present study was conducted at the Kulumsa Soil and Plant Analysis Laboratory, Ethiopia from January 2021 to January 2022 to identify the appropriate storage duration of soil samples and recommend good storage materials for soil laboratories. The effects of soil sample storage on the pH, TN (%), OC (%), and available phosphorus were studied for 12 months. The highest and lowest concentrations of pH, TN (%), OC (%), and available phosphorus at the Kulumsa site were: 6.29 and 5.82; 0.17 and 0.12%; 2.93 and 1.70%; 22.53 and 10.88 respectively. At the Arsi Robe site, the highest and lowest concentrations of pH, TN (%), OC (%), and available phosphorus were 6.54 and 5.97, 0.16 and 0.12%, 3.02 and 1.00%, and 19.09 and 10.39 respectively. The highest and lowest concentrations of pH, TN (%), OC (%), and available phosphorus (mg kg1) at the Dera site were 9.14 and 8.47; 0.11, 0.07%; 4.36, 1.04%; and 111.85 and 75.37 respectively. Soil samples were stored in three storage containers with ...

International Journal of Horticulture and Food Science

American Journal of Agriculture and Forestry

Field experiments were conducted at Kulumsa station of Tiyo district, southeastern Ethiopia in 20... more Field experiments were conducted at Kulumsa station of Tiyo district, southeastern Ethiopia in 2017 and 2018 offseason, to test the effect of fertilizer products on yield and yield components of potato and to evaluate the possibility of incorporating the products into input system for agricultural production. The treatment set up were 1) No input (negative control), 2) recommended rate of fertilizer (RNP) (111, 39 and 16.5 Kg ha-1 N. P and S, respectively) from NPS and Urea, 3) RNP + 1.8 L ha-1 LF; 4) RNP + 3 L ha-1 LF, and 5) RNP + 4.2 L ha-1 LF on growth performance and yield. The results showed that treatment effects were significant for potato total and marketable tuber yields. Since the effect of fertilizers on the yield of potato was consistent across seasons in Kulumsa station, combined analysis has been conducted. The highest total (46.1 t ha-1) and marketable (42.2 t ha-1) tuber yields were recorded with the application of recommended fertilizer (RNP) + 1.8 L ha-1 LF and (RNP) + 3L ha-1 LF. This treatment was even statistically superior to application of RNP alone. Compared to the control and RNP treatments, application of inorganic fertilizers with 1.8 L ha-1 LF gave 23.4 and 14.1% more total tuber yield of potato, respectively. Similarly, RNP + 3.0L ha-1 LF gave 20.9 and 13.7 % more marketable tuber yield of potato over the control and recommended fertilizer from inorganic sources (NPS and urea) treatments, respectively. The result further showed that application of 1.8 L ha-1 LF with RNP fertilizer gave total and marketable potato tuber yields which is statistically at par with yields obtained from NPS plus 3.0 L ha-1 LF. The lowest total (35.3 t ha-1) and marketable (33.4 t ha-1) tuber yields of potato were harvested from the plots that received neither inorganic nor fertilizers. Therefore, integrated application of liquid fertilizer along with full dose of inorganic fertilizers has been recommended for increased productivity of potato in the southeastern highlands of Ethiopia.

Applied microbiology: open access, 2019

International Journal of Bioorganic Chemistry, 2021

This review discusses about laboratory soil analysis and soil mineral management in different Org... more This review discusses about laboratory soil analysis and soil mineral management in different Organic farming. The objective of this review were laboratory mineral soil analysis and soil mineral management in organic farming was to draw together all the available relevant research findings in order to develop the knowledge and expertise of organic advisers and thereby to improve soil management practice on organic farms. There are several methods available for measuring total N in soils, mineral N in soils and mineralization potential. Chemical extractions which aim to establish the pool of nitrogen to plants include the use of potassium salts, K 2 SO 4 to extract inorganic and labile organic N pools. Soil P tests are commonly used to assess soil nutrient availability and to assist in fertilizer recommendations. Available K measured by ammonium nitrate gave a good indication of the plant available K in soil; crops showed a response to increasing available K and continued cropping caused a decline in the pool of available K in soil. Soil analysis based on chemical analysis is a snapshot of nutrient pools. It is normally reported in mg/l of soil. Soils are sampled and analysed and digital maps provided to the farmer. This then allows targeted use of inputs to correct nutrient deficiencies or acidity. While this is primarily used in conventional farming for fertiliser application it is now also being used increasingly in organic farming.

Biochemistry and Molecular Biology, 2019

Samples of fish organs and water were collected from three sampling sites of Lakes Chamo and Abay... more Samples of fish organs and water were collected from three sampling sites of Lakes Chamo and Abaya. A procedure consuming 12 mL mixture of HNO 3-H 2 O 2 for gill, kidney, liver and 1:2.5 mL mixture of HNO 3-HCl for water samples for digestion of was developed. Concentrations of three metals in water and their accumulation in Tilapia (Oreochromis niloticus) and Barbus (Labeobarbus intermedius) fish species were determined using Flame Atomic Absorption Spectroscopy. Concentrations of metals in gills, kidney, liver and water varied (mg/kg): Zn 0.

Asian Journal of Plant Science & Research, 2021

The presence of genotype by environment interaction complicates selection of superior genotypes. ... more The presence of genotype by environment interaction complicates selection of superior genotypes. The study was conducted to evaluate the effect of GEI and its magnitude on the grain quality of bread wheat genotypes in Ethiopia. 15 bread wheat genotypes were evaluated using RCBD with 4 replications at 6 different locations in Ethiopia. Analysis of variance showed highly significant (P<0.001) differences among genotype, environment and its interactions for investigated quality properties. The results showed that the genotype ETBW9045 had excellent HLW followed by ETBW8070 (73.38 kg/hl) and ETBW8065 (73.02 kg/hl), while the lowest mean values of HLW was obtained from genotype ETBW9464 (66.58 kg/hl) and genotype ETBW9470 had excellent TKW followed by ETBW8427 (39.22 g), while the lowest was that of ETBW8075 (27.32 g). The mean value of moisture content of wheat genotype was ranged from 10.5% to 10.99%. In this result protein content varied from 13.93 to 15.05%. Genotype ETBW8065, ETB...

International Journal of Bioorganic Chemistry, 2021

This review discusses about laboratory soil analysis and soil mineral management in different Org... more This review discusses about laboratory soil analysis and soil mineral management in different Organic farming. The objective of this review were laboratory mineral soil analysis and soil mineral management in organic farming was to draw together all the available relevant research findings in order to develop the knowledge and expertise of organic advisers and thereby to improve soil management practice on organic farms. There are several methods available for measuring total N in soils, mineral N in soils and mineralization potential. Chemical extractions which aim to establish the pool of nitrogen to plants include the use of potassium salts, K2SO4 to extract inorganic and labile organic N pools. Soil P tests are commonly used to assess soil nutrient availability and to assist in fertilizer recommendations. Available K measured by ammonium nitrate gave a good indication of the plant available K in soil; crops showed a response to increasing available K and continued cropping cause...

Journal of Biology, Agriculture and Healthcare, 2021

This review discusses about phosphorus and zinc fertilizer consumption led to increasing yield an... more This review discusses about phosphorus and zinc fertilizer consumption led to increasing yield and yield components of the crops. The objectives of this review were focuses on the impact of application of phosphorus and zinc fertilizers on yield and yield components of crop plants and their importance on crop performance enhancement. The other important aspect of phosphorus and zinc nutrition is the interaction effect between them, especially in soils marginally deficient in phosphorus and zinc. When phosphorus and zinc were fertilized together, to such soils, crop yields are reported to increase with positive interaction of phosphorus and zinc. The Applications of zinc and phosphorus fertilizers led to increasing yield and yield components of crops such as height, number of tiller, Biomass yield, the number of filled grain spike, yield in ha, spike weight in plant, grain length, spike length in m 2 and harvest index etc. Thus, it is important to apply the effect of P and Zn nutrien...

Biochemistry and Molecular Biology, 2019

Samples of fish organs and water were collected from three sampling sites of Lakes Chamo and Abay... more Samples of fish organs and water were collected from three sampling sites of Lakes Chamo and Abaya. A procedure consuming 12 mL mixture of HNO 3-H 2 O 2 for gill, kidney, liver and 1:2.5 mL mixture of HNO 3-HCl for water samples for digestion of was developed. Concentrations of three metals in water and their accumulation in Tilapia (Oreochromis niloticus) and Barbus (Labeobarbus intermedius) fish species were determined using Flame Atomic Absorption Spectroscopy. Concentrations of metals in gills, kidney, liver and water varied (mg/kg): Zn 0.

Field pea (Pisum sativum L.) is among the major food crops grown globally for its high protein co... more Field pea (Pisum sativum L.) is among the major food crops grown globally for its high protein content. However there is no detailed nutrient composition profile and recently challenged with a storage pest, Callosobruchus chinensis L. This study was carried out to know the nutrient composition and quantify the damage caused by the pest and identify the sources of resistance in the genotypes in Ethiopia. The study was conducted at Kulumsa Agricultural Research Center (KARC) in Ethiopia, during 2019. Nutrients were estimated in laboratory analysis and callosobruchus chinensis L. was used to challenge 26 field pea genotypes under no choice condition, in the laboratory. Results showed a significant differences (p 10) (Table 4). Genotypes; fpcoll-1/07, fpcoll-2/07, fpcoll-28/07, fpcoll-29/07, fpcoll-30/07, fpcoll-31/07, fpcoll-40/07, fpcoll-41/07, fpcoll-42/07/ had high values (ppm) for; ca, k, mg, and zn, whereas all improved, introduced crossed line of considered field peal genotypes h...