Shemelis Tesema assistance researcher, department of natural resource management, jinka center southern agricultural research institute. recently focused on soil science. Supervisors: Dr. Alemayehu Kifilu (associate professor)
International Journal of Agricultural Research, Innovation and Technology, 2022
Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and ... more Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and inappropriate and imbalanced fertilizer application are among the most important factors that reduces the food barley production in Ethiopia. Therefore, the experiment was conducted to evaluate NPSB blended fertilizer rate effect on improving production of food barley in Semen Ari District, Southwestern Ethiopia during main cropping season. Control, (142 NPS + 159 Urea) kg ha-1, (150 NPSB + 41 Urea) kg ha-1, (200 NPSB + 72 Urea) kg ha-1, (250 NPSB + 102 Urea) kg ha-1 and (100 NPSB + 161 Urea) kg ha-1 treatments were used for the experiment which laid out in RCBD following three replication with spacing of 20 cm between rows; and HB 1307 improved food barley seeds were drilled on prepared rows. Full dose of blended and potassium fertilizers were applied at planting time and urea was applied in two split. The result revealed that food barley responded well to application of N, P, S and B t...
Soil infertility constraints and low soil pH are the predominant problems to barley production an... more Soil infertility constraints and low soil pH are the predominant problems to barley production and productivity in the highland regions of Ethiopia. In reaction to this, the experiment was carried out in highland areas of Semen Ari district with low soil pH to determine the effects of split application of lime on soil pH and grain yield of barley from 2018 to 2020 for three cropping years. Six treatments were used for this experiment as control (no inputs); 200 kg ha-1 of NPKSZnB + 94 kg ha-1 of urea top-dressed; lime applied at once (7.6 t ha-1); two splits or 50% (1 st and 2 nd years); three splits or 33% (1 st , 2 nd and 3 rd years); two splits or 50% (1 st and 3 rd years). The RCBD design within three replications was employed to arrange treatments. The result of soil analysis after lime application revealed that it improved available phosphorus and raised the soil pH, but decreased the exchangeable acidity compared to control treatments. Among the treatments, lime application in two splits (1 st and 3 rd years) gave the maximum grain yield (3061.5 kg ha-1) of barley significantly, whereas the minimum yield was obtained from the control (untreated plot). The maximum grain yield in the third year was obtained from the application of two splits or 50% (1 st and 3 rd years) which were statistically non-significant with the application of three splits or 33% in each year (1 st , 2 nd and 3 rd years) and two splits or 50% (1 st and 2 nd years). Thus, to enhance soil fertility status and obtain better barley grain yield, farmers must undertake the use of a split application of lime with inorganic fertilizer rather than a sole application of inorganic fertilizer. It suggested that, depending on the accessibility of lime and affordability of barley producers, farmers in the study area could use the above application frequencies with recommended inorganic fertilizers (69N and 46P2O5). Further investigation should be done on plant nutrient uptake, nutrient use efficiency and optimization.
A study was conducted to evaluate the early growth performance and nutrient composition of some s... more A study was conducted to evaluate the early growth performance and nutrient composition of some selected tree/shrub species in the fodder bank agroforestry system. Moringa stenopetala, Terminalia brownii, Morus alba, Melia azedarach, and Sesbania sesban were used for this study. Square quadrants of 16 m2 plot sizes were established with the RCBD of three replications. Seedlings were planted with 1 m × 1 m spacing between rows and plants respectively. The growth and chemical composition of the studied tree/shrub species were evaluated with one way ANOVA. The growth parameters and nutrient composition of the studied fodder tree/shrub species are significantly (P ≤ 0.05) varied. The nutrient composition of the studied tree/shrub species ranged between percentages of 88.3 - 90.6 of Dry Matter, 5.7 - 13 of Ash, 12.45 - 22.35 of Crude Protein, 11.8 – 23.5 of Acid Detergent Fiber and 18.1 - 33.6 of Neutral Detergent Fiber. S. sesban and M. stenopetala are the consistent and superior tree/s...
A study was conducted to evaluate the early growth performance and nutrient composition of some s... more A study was conducted to evaluate the early growth performance and nutrient composition of some selected tree/shrub species in the fodder bank agroforestry system. Moringa stenopetala, Terminalia brownii, Morus alba, Melia azedarach, and Sesbania sesban were used for this study. Square quadrants of 16 m 2 plot sizes were established with the RCBD of three replications. Seedlings were planted with 1 m × 1 m spacing between rows and plants respectively. The growth and chemical composition of the studied tree/shrub species were evaluated with one way ANOVA. The growth parameters and nutrient composition of the studied fodder tree/shrub species are significantly (P ≤ 0.05) varied. The nutrient composition of the studied tree/shrub species ranged between percentages of 88.3-90.6 of Dry Matter, 5.7-13 of Ash, 12.45-22.35 of Crude Protein, 11.8-23.5 of Acid Detergent Fiber and 18.1-33.6 of Neutral Detergent Fiber. S. sesban and M. stenopetala are the consistent and superior tree/shrub species with growth performance and nutrient content parameters respectively. In addition to this, the selected fodder tree/shrub species are well adapted in the fodder bank agroforestry system and have considerable nutrient constituents. Thus the studied tree species seems to be a potential alternative for complementing the basal feed.
International Journal of Agricultural Research, Innovation and Technology, 2022
Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and ... more Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and inappropriate and imbalanced fertilizer application are among the most important factors that reduces the food barley production in Ethiopia. Therefore, the experiment was conducted to evaluate NPSB blended fertilizer rate effect on improving production of food barley in Semen Ari District, Southwestern Ethiopia during main cropping season. Control, (142 NPS + 159 Urea) kg ha-1, (150 NPSB + 41 Urea) kg ha-1, (200 NPSB + 72 Urea) kg ha-1, (250 NPSB + 102 Urea) kg ha-1 and (100 NPSB + 161 Urea) kg ha-1 treatments were used for the experiment which laid out in RCBD following three replication with spacing of 20 cm between rows; and HB 1307 improved food barley seeds were drilled on prepared rows. Full dose of blended and potassium fertilizers were applied at planting time and urea was applied in two split. The result revealed that food barley responded well to application of N, P, S and B t...
International Journal of Agricultural Research, Innovation and Technology, 2022
Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and ... more Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and inappropriate and imbalanced fertilizer application are among the most important factors that reduces the food barley production in Ethiopia. Therefore, the experiment was conducted to evaluate NPSB blended fertilizer rate effect on improving production of food barley in Semen Ari District, Southwestern Ethiopia during main cropping season. Control, (142 NPS + 159 Urea) kg ha-1, (150 NPSB + 41 Urea) kg ha-1, (200 NPSB + 72 Urea) kg ha-1, (250 NPSB + 102 Urea) kg ha-1 and (100 NPSB + 161 Urea) kg ha-1 treatments were used for the experiment which laid out in RCBD following three replication with spacing of 20 cm between rows; and HB 1307 improved food barley seeds were drilled on prepared rows. Full dose of blended and potassium fertilizers were applied at planting time and urea was applied in two split. The result revealed that food barley responded well to application of N, P, S and B t...
A study was conducted in Hamer and Benna-Tsemay districts of the South Omo zone of Ethiopia, with... more A study was conducted in Hamer and Benna-Tsemay districts of the South Omo zone of Ethiopia, with the objectives of identifying and mapping the market chain and its functions, providing the picture of supply and use patterns, identifying and suggesting possible intervention of value additive techniques, identifying potential opportunities and constraints in the production, processing and marketing of Frankincense. Twostage sampling strategy used to select Frankincense collectors for the study the producers/collectors and traders within society as well nearby marketing systems were studied through group discussion, personal observation, and using a structured questionnaire where each household was taken as a unit of analysis (45 households from Hammer, 15 from Benna-Tsemay). Simple descriptive statistical tools were used for the analysis. Observation among value chain were summarized using Strength, Weakness, Opportunity and Treat (SWOT) analysis and software called Statistical Package for Social Science (SPSS) were also used for the analysis. Survey results show that almost all of the respondents confirmed that the incense products potentially collected from the natural forest found far away from their villages. Currently the marketing of Frankincense both at Hammer and Benatsemay Woreda of south Omo zone in general is not well developed and there is no established market in place. To advance the value chain the of Frankincense and sustainably contribute to the income of pastoral communities formation of collector groups, associations or cooperatives is needed to foster cooperation and coordination of the collection and marketing of Frankincense.
Depletion of soil fertility, depletion of macro-and micro-nutrients and soil organic matter and i... more Depletion of soil fertility, depletion of macro-and micro-nutrients and soil organic matter and inappropriate and imbalanced fertilizer application are among the most important factors that reduces the food barley production in Ethiopia. Therefore, the experiment was conducted to evaluate NPSB blended fertilizer rate effect on improving production of food barley in Semen Ari District, Southwestern Ethiopia during main cropping season. Control, (142 NPS + 159 Urea) kg ha-1 , (150 NPSB + 41 Urea) kg ha-1 , (200 NPSB + 72 Urea) kg ha-1 , (250 NPSB + 102 Urea) kg ha-1 and (100 NPSB + 161 Urea) kg ha-1 treatments were used for the experiment which laid out in RCBD following three replication with spacing of 20 cm between rows; and HB 1307 improved food barley seeds were drilled on prepared rows. Full dose of blended and potassium fertilizers were applied at planting time and urea was applied in two split. The result revealed that food barley responded well to application of N, P, S and B than the unfertilized one. Application of 100 kg ha-1 NPSB + 161 kg ha-1 Urea resulted in highest grain yield of 3806.3 kg ha-1 , while the lowest grain yield of 1939.2 kg ha-1 was recorded from the nil. Moreover, the highest net benefit of 32124.56 ETB ha-1 and economic returns of 942.2% was recorded in response to application of 100 kg ha-1 NPSB + 161 kg ha-1 Urea. Application of 100 kg ha-1 NPSB + 161 kg ha-1 Urea gave 49.05% yield increment and 40.24% increment in economic return over the control. Therefore, we recommend application of 100 kg ha-1 NPSB + 161 kg ha-1 Urea for farmers and investor's in study area and similar agro-ecologies as it was optimum for improving food barley production. Further studies and investigation should be done on plant nutrient uptake, nutrient use efficiency and over location.
Crop specific fertilizer recommendation is necessary for sustainable crop production. Accordingly... more Crop specific fertilizer recommendation is necessary for sustainable crop production. Accordingly, a field experiment was conducted in Debub Ari district, Southern Ethiopia, to evaluate blended fertilizer types and rates effect on improving the production of wheat during the main rainy season of 2018 and 2019. The experiment was laid out in Randomized Complete Block Design with three replications. The 9 treatments used for the field experiment were 1) control, 2) (142 NPS + 42 urea) kgha-1 , 3) (189 NPS + 72 urea) kgha-1 , 4) (237 NPS +102 urea) kgha-1, 5) (142NPS + 159 urea) kgha-1 , 6) (150NPSB+ 41urea) kgha-1 , 7) (200 NPSB + 72 urea) kgha-1 , 8) (250NPSB + 102Urea) kgha-1 and 9) (150 NPSB + 161Urea) kgha-1 treatments. Application of blended fertilizer significantly (p < 0.05) increased the plant height, number of tillers per plant, spike length, number of seeds per spike, grain yield, aboveground biomass, and thousand seed weight at harvest as compared to the control. The maximum and significant grain yield (3796.7kg ha-1) and minimum (1466.5 kg ha-1) were obtained from the application of 237 kg ha-1 NPS + 102 kgha-1 urea and unfertilized treatment, respectively. The application of 237 kg ha-1 NPS + 102kgha-1 urea had a maximum and acceptable Marginal rate of return (MRR %) and net benefit. Therefore, this type and rate of blended fertilizer can be recommended since it produced a high marginal rate of return, high net benefit, and relatively low total cost of production, for wheat production in the study area and other similar agroecologies.
A field experiment was conducted on sandy clay soils of Alduba, South omo, south western Ethiopia... more A field experiment was conducted on sandy clay soils of Alduba, South omo, south western Ethiopia for two consecutive years with the aim of determining the optimal fertilizer application rate and the most profitable level for sorghum production. Twenty treatment combinations were made from five levels of nitrogen 0 kg of N ha-1, 23 kg of N ha-1, 46 kg of N ha-1, 69 kg of N ha-1 and 92 kg of N ha-1 with four level of phosphors 0 P kg of ha-1, 10 kg of P ha-1, 20 kg of P ha-1 and 30 kg of Pha-1. The experimental design was a randomized complete block design (RCBD) with three replications. The sorghum improved variety‘ Teshale’ was planted early in Ethiopian ‘Meher’ season of 2014 and 2015 for two years. Based on the objective function of profit maximization to determine the optimum returns, the highest two years average grain yield (2.689 tones ha-1) was recorded at a fertilizer application rate of 46 kg N ha-1 and 30 kg P ha-1 with a gross margin of 19703.27 ETB, net returns of 12991...
A field experiment was conducted on sandy clay soils of Alduba, South omo, south western Ethiopia... more A field experiment was conducted on sandy clay soils of Alduba, South omo, south western Ethiopia for two consecutive years with the aim of determining the optimal fertilizer application rate and the most profitable level for sorghum production. Twenty treatment combinations were made from five levels of nitrogen 0 kg of N ha-1, 23 kg of N ha-1, 46 kg of N ha-1, 69 kg of N ha-1 and 92 kg of N ha-1 with four level of phosphors 0 P kg of ha-1, 10 kg of P ha-1, 20 kg of P ha-1 and 30 kg of Pha-1. The experimental design was a randomized complete block design (RCBD) with three replications. The sorghum improved variety‘ Teshale’ was planted early in Ethiopian ‘Meher’ season of 2014 and 2015 for two years. Based on the objective function of profit maximization to determine the optimum returns, the highest two years average grain yield (2.689 tones ha-1) was recorded at a fertilizer application rate of 46 kg N ha-1 and 30 kg P ha-1 with a gross margin of 19703.27 ETB, net returns of 12991...
International Journal of Agricultural Research, Innovation and Technology, 2022
Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and ... more Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and inappropriate and imbalanced fertilizer application are among the most important factors that reduces the food barley production in Ethiopia. Therefore, the experiment was conducted to evaluate NPSB blended fertilizer rate effect on improving production of food barley in Semen Ari District, Southwestern Ethiopia during main cropping season. Control, (142 NPS + 159 Urea) kg ha-1, (150 NPSB + 41 Urea) kg ha-1, (200 NPSB + 72 Urea) kg ha-1, (250 NPSB + 102 Urea) kg ha-1 and (100 NPSB + 161 Urea) kg ha-1 treatments were used for the experiment which laid out in RCBD following three replication with spacing of 20 cm between rows; and HB 1307 improved food barley seeds were drilled on prepared rows. Full dose of blended and potassium fertilizers were applied at planting time and urea was applied in two split. The result revealed that food barley responded well to application of N, P, S and B t...
Soil infertility constraints and low soil pH are the predominant problems to barley production an... more Soil infertility constraints and low soil pH are the predominant problems to barley production and productivity in the highland regions of Ethiopia. In reaction to this, the experiment was carried out in highland areas of Semen Ari district with low soil pH to determine the effects of split application of lime on soil pH and grain yield of barley from 2018 to 2020 for three cropping years. Six treatments were used for this experiment as control (no inputs); 200 kg ha-1 of NPKSZnB + 94 kg ha-1 of urea top-dressed; lime applied at once (7.6 t ha-1); two splits or 50% (1 st and 2 nd years); three splits or 33% (1 st , 2 nd and 3 rd years); two splits or 50% (1 st and 3 rd years). The RCBD design within three replications was employed to arrange treatments. The result of soil analysis after lime application revealed that it improved available phosphorus and raised the soil pH, but decreased the exchangeable acidity compared to control treatments. Among the treatments, lime application in two splits (1 st and 3 rd years) gave the maximum grain yield (3061.5 kg ha-1) of barley significantly, whereas the minimum yield was obtained from the control (untreated plot). The maximum grain yield in the third year was obtained from the application of two splits or 50% (1 st and 3 rd years) which were statistically non-significant with the application of three splits or 33% in each year (1 st , 2 nd and 3 rd years) and two splits or 50% (1 st and 2 nd years). Thus, to enhance soil fertility status and obtain better barley grain yield, farmers must undertake the use of a split application of lime with inorganic fertilizer rather than a sole application of inorganic fertilizer. It suggested that, depending on the accessibility of lime and affordability of barley producers, farmers in the study area could use the above application frequencies with recommended inorganic fertilizers (69N and 46P2O5). Further investigation should be done on plant nutrient uptake, nutrient use efficiency and optimization.
A study was conducted to evaluate the early growth performance and nutrient composition of some s... more A study was conducted to evaluate the early growth performance and nutrient composition of some selected tree/shrub species in the fodder bank agroforestry system. Moringa stenopetala, Terminalia brownii, Morus alba, Melia azedarach, and Sesbania sesban were used for this study. Square quadrants of 16 m2 plot sizes were established with the RCBD of three replications. Seedlings were planted with 1 m × 1 m spacing between rows and plants respectively. The growth and chemical composition of the studied tree/shrub species were evaluated with one way ANOVA. The growth parameters and nutrient composition of the studied fodder tree/shrub species are significantly (P ≤ 0.05) varied. The nutrient composition of the studied tree/shrub species ranged between percentages of 88.3 - 90.6 of Dry Matter, 5.7 - 13 of Ash, 12.45 - 22.35 of Crude Protein, 11.8 – 23.5 of Acid Detergent Fiber and 18.1 - 33.6 of Neutral Detergent Fiber. S. sesban and M. stenopetala are the consistent and superior tree/s...
A study was conducted to evaluate the early growth performance and nutrient composition of some s... more A study was conducted to evaluate the early growth performance and nutrient composition of some selected tree/shrub species in the fodder bank agroforestry system. Moringa stenopetala, Terminalia brownii, Morus alba, Melia azedarach, and Sesbania sesban were used for this study. Square quadrants of 16 m 2 plot sizes were established with the RCBD of three replications. Seedlings were planted with 1 m × 1 m spacing between rows and plants respectively. The growth and chemical composition of the studied tree/shrub species were evaluated with one way ANOVA. The growth parameters and nutrient composition of the studied fodder tree/shrub species are significantly (P ≤ 0.05) varied. The nutrient composition of the studied tree/shrub species ranged between percentages of 88.3-90.6 of Dry Matter, 5.7-13 of Ash, 12.45-22.35 of Crude Protein, 11.8-23.5 of Acid Detergent Fiber and 18.1-33.6 of Neutral Detergent Fiber. S. sesban and M. stenopetala are the consistent and superior tree/shrub species with growth performance and nutrient content parameters respectively. In addition to this, the selected fodder tree/shrub species are well adapted in the fodder bank agroforestry system and have considerable nutrient constituents. Thus the studied tree species seems to be a potential alternative for complementing the basal feed.
International Journal of Agricultural Research, Innovation and Technology, 2022
Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and ... more Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and inappropriate and imbalanced fertilizer application are among the most important factors that reduces the food barley production in Ethiopia. Therefore, the experiment was conducted to evaluate NPSB blended fertilizer rate effect on improving production of food barley in Semen Ari District, Southwestern Ethiopia during main cropping season. Control, (142 NPS + 159 Urea) kg ha-1, (150 NPSB + 41 Urea) kg ha-1, (200 NPSB + 72 Urea) kg ha-1, (250 NPSB + 102 Urea) kg ha-1 and (100 NPSB + 161 Urea) kg ha-1 treatments were used for the experiment which laid out in RCBD following three replication with spacing of 20 cm between rows; and HB 1307 improved food barley seeds were drilled on prepared rows. Full dose of blended and potassium fertilizers were applied at planting time and urea was applied in two split. The result revealed that food barley responded well to application of N, P, S and B t...
International Journal of Agricultural Research, Innovation and Technology, 2022
Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and ... more Depletion of soil fertility, depletion of macro- and micro-nutrients and soil organic matter and inappropriate and imbalanced fertilizer application are among the most important factors that reduces the food barley production in Ethiopia. Therefore, the experiment was conducted to evaluate NPSB blended fertilizer rate effect on improving production of food barley in Semen Ari District, Southwestern Ethiopia during main cropping season. Control, (142 NPS + 159 Urea) kg ha-1, (150 NPSB + 41 Urea) kg ha-1, (200 NPSB + 72 Urea) kg ha-1, (250 NPSB + 102 Urea) kg ha-1 and (100 NPSB + 161 Urea) kg ha-1 treatments were used for the experiment which laid out in RCBD following three replication with spacing of 20 cm between rows; and HB 1307 improved food barley seeds were drilled on prepared rows. Full dose of blended and potassium fertilizers were applied at planting time and urea was applied in two split. The result revealed that food barley responded well to application of N, P, S and B t...
A study was conducted in Hamer and Benna-Tsemay districts of the South Omo zone of Ethiopia, with... more A study was conducted in Hamer and Benna-Tsemay districts of the South Omo zone of Ethiopia, with the objectives of identifying and mapping the market chain and its functions, providing the picture of supply and use patterns, identifying and suggesting possible intervention of value additive techniques, identifying potential opportunities and constraints in the production, processing and marketing of Frankincense. Twostage sampling strategy used to select Frankincense collectors for the study the producers/collectors and traders within society as well nearby marketing systems were studied through group discussion, personal observation, and using a structured questionnaire where each household was taken as a unit of analysis (45 households from Hammer, 15 from Benna-Tsemay). Simple descriptive statistical tools were used for the analysis. Observation among value chain were summarized using Strength, Weakness, Opportunity and Treat (SWOT) analysis and software called Statistical Package for Social Science (SPSS) were also used for the analysis. Survey results show that almost all of the respondents confirmed that the incense products potentially collected from the natural forest found far away from their villages. Currently the marketing of Frankincense both at Hammer and Benatsemay Woreda of south Omo zone in general is not well developed and there is no established market in place. To advance the value chain the of Frankincense and sustainably contribute to the income of pastoral communities formation of collector groups, associations or cooperatives is needed to foster cooperation and coordination of the collection and marketing of Frankincense.
Depletion of soil fertility, depletion of macro-and micro-nutrients and soil organic matter and i... more Depletion of soil fertility, depletion of macro-and micro-nutrients and soil organic matter and inappropriate and imbalanced fertilizer application are among the most important factors that reduces the food barley production in Ethiopia. Therefore, the experiment was conducted to evaluate NPSB blended fertilizer rate effect on improving production of food barley in Semen Ari District, Southwestern Ethiopia during main cropping season. Control, (142 NPS + 159 Urea) kg ha-1 , (150 NPSB + 41 Urea) kg ha-1 , (200 NPSB + 72 Urea) kg ha-1 , (250 NPSB + 102 Urea) kg ha-1 and (100 NPSB + 161 Urea) kg ha-1 treatments were used for the experiment which laid out in RCBD following three replication with spacing of 20 cm between rows; and HB 1307 improved food barley seeds were drilled on prepared rows. Full dose of blended and potassium fertilizers were applied at planting time and urea was applied in two split. The result revealed that food barley responded well to application of N, P, S and B than the unfertilized one. Application of 100 kg ha-1 NPSB + 161 kg ha-1 Urea resulted in highest grain yield of 3806.3 kg ha-1 , while the lowest grain yield of 1939.2 kg ha-1 was recorded from the nil. Moreover, the highest net benefit of 32124.56 ETB ha-1 and economic returns of 942.2% was recorded in response to application of 100 kg ha-1 NPSB + 161 kg ha-1 Urea. Application of 100 kg ha-1 NPSB + 161 kg ha-1 Urea gave 49.05% yield increment and 40.24% increment in economic return over the control. Therefore, we recommend application of 100 kg ha-1 NPSB + 161 kg ha-1 Urea for farmers and investor's in study area and similar agro-ecologies as it was optimum for improving food barley production. Further studies and investigation should be done on plant nutrient uptake, nutrient use efficiency and over location.
Crop specific fertilizer recommendation is necessary for sustainable crop production. Accordingly... more Crop specific fertilizer recommendation is necessary for sustainable crop production. Accordingly, a field experiment was conducted in Debub Ari district, Southern Ethiopia, to evaluate blended fertilizer types and rates effect on improving the production of wheat during the main rainy season of 2018 and 2019. The experiment was laid out in Randomized Complete Block Design with three replications. The 9 treatments used for the field experiment were 1) control, 2) (142 NPS + 42 urea) kgha-1 , 3) (189 NPS + 72 urea) kgha-1 , 4) (237 NPS +102 urea) kgha-1, 5) (142NPS + 159 urea) kgha-1 , 6) (150NPSB+ 41urea) kgha-1 , 7) (200 NPSB + 72 urea) kgha-1 , 8) (250NPSB + 102Urea) kgha-1 and 9) (150 NPSB + 161Urea) kgha-1 treatments. Application of blended fertilizer significantly (p < 0.05) increased the plant height, number of tillers per plant, spike length, number of seeds per spike, grain yield, aboveground biomass, and thousand seed weight at harvest as compared to the control. The maximum and significant grain yield (3796.7kg ha-1) and minimum (1466.5 kg ha-1) were obtained from the application of 237 kg ha-1 NPS + 102 kgha-1 urea and unfertilized treatment, respectively. The application of 237 kg ha-1 NPS + 102kgha-1 urea had a maximum and acceptable Marginal rate of return (MRR %) and net benefit. Therefore, this type and rate of blended fertilizer can be recommended since it produced a high marginal rate of return, high net benefit, and relatively low total cost of production, for wheat production in the study area and other similar agroecologies.
A field experiment was conducted on sandy clay soils of Alduba, South omo, south western Ethiopia... more A field experiment was conducted on sandy clay soils of Alduba, South omo, south western Ethiopia for two consecutive years with the aim of determining the optimal fertilizer application rate and the most profitable level for sorghum production. Twenty treatment combinations were made from five levels of nitrogen 0 kg of N ha-1, 23 kg of N ha-1, 46 kg of N ha-1, 69 kg of N ha-1 and 92 kg of N ha-1 with four level of phosphors 0 P kg of ha-1, 10 kg of P ha-1, 20 kg of P ha-1 and 30 kg of Pha-1. The experimental design was a randomized complete block design (RCBD) with three replications. The sorghum improved variety‘ Teshale’ was planted early in Ethiopian ‘Meher’ season of 2014 and 2015 for two years. Based on the objective function of profit maximization to determine the optimum returns, the highest two years average grain yield (2.689 tones ha-1) was recorded at a fertilizer application rate of 46 kg N ha-1 and 30 kg P ha-1 with a gross margin of 19703.27 ETB, net returns of 12991...
A field experiment was conducted on sandy clay soils of Alduba, South omo, south western Ethiopia... more A field experiment was conducted on sandy clay soils of Alduba, South omo, south western Ethiopia for two consecutive years with the aim of determining the optimal fertilizer application rate and the most profitable level for sorghum production. Twenty treatment combinations were made from five levels of nitrogen 0 kg of N ha-1, 23 kg of N ha-1, 46 kg of N ha-1, 69 kg of N ha-1 and 92 kg of N ha-1 with four level of phosphors 0 P kg of ha-1, 10 kg of P ha-1, 20 kg of P ha-1 and 30 kg of Pha-1. The experimental design was a randomized complete block design (RCBD) with three replications. The sorghum improved variety‘ Teshale’ was planted early in Ethiopian ‘Meher’ season of 2014 and 2015 for two years. Based on the objective function of profit maximization to determine the optimum returns, the highest two years average grain yield (2.689 tones ha-1) was recorded at a fertilizer application rate of 46 kg N ha-1 and 30 kg P ha-1 with a gross margin of 19703.27 ETB, net returns of 12991...
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