The field experiment was conducted in 2018 and 2019 cropping season to determine the effects of u... more The field experiment was conducted in 2018 and 2019 cropping season to determine the effects of urea stable and urea on nitrogen use efficiency and maize performance in highland Nitisol of Midakegn and Toke Kutaye districts. The experiment was laid out in randomized complete block design with three replications. Nine treatments of urea stable and urea with different application times was used. Application of different nitrogen rate from urea stable and urea were significantly (P < 0.05) influenced mean plant height, leaf area index, dry biomass, grain yield, thousand seed weight and harvest index of maize crop. Significantly higher mean leaf area index (4.1), thousand seed weight (357 g), dry biomass (16472 kg ha-1) and grain yield (5475 kg ha-1) were recorded from split application of 138 kg N ha-1 from urea stable whereas higher mean plant height was recorded from split application 138 kg N ha-1 from urea. Application of nitrogen rate were also affected nitrogen uptake and agro...
Maize is a major staple crop grown and widely consumed in western Ethiopia but it is low due to d... more Maize is a major staple crop grown and widely consumed in western Ethiopia but it is low due to declining soil fertility and requires application of high fertilizer for optimum production. A field experiment was carried out on farmers’ field to study the effect of blended NPSB and urea fertilizer rate on yield and yield components, and economics of highland maize for two consecutive cropping seasons on Ultisol of Liben Jawi district. Three rates of nitrogen (150 250 and 350 kg urea ha-1) and four rates of blended NPSB (150, 200, 250 and 300 kg NPSB ha-1) were combined in factorial arrangement forming 12 treatments and tested with negative control and recommended (119/69 kg NP ha-1). The experiment was laid out in randomized complete block design with three replications. Combined application of blended NPSB and Urea was significantly affected mean yield and yield components of maize. Significantly higher biomass and grain yield of maize were obtained with application of higher nitrog...
Maize growers need balanced crop nutrition to maximize its yield potential and get the most out o... more Maize growers need balanced crop nutrition to maximize its yield potential and get the most out of their fertilizer investment. In practice, this requires making all of the required nutrients available to the maize crop by the right amount or rate. So, the objective was to determine the optimum blended (NPSZnB) and urea fertilizer rates on growth, yield and yield components of maize in Toke Kutaye district west Showa Zone. The experiment was laid out using randomized complete block design in factorial arrangement with three replications. The treatments consisting of four rates of blended (150, 200, 250, 300 kg NPSZnB ha ) and 1 three rates of Urea (150, 250 and 350 kg ha ) were tested with negative control and blanket recommended NP 1 (119/69 kg ha ) having a total of 14 treatments for 2018/2019 and 2019/2020 cropping seasons. Application of 1 urea and blended fertilizer levels were significantly (P<0.05) affected almost all the growth, yield and yield components of maize in both...
Currently use of conventional compost and vermicompost for crop production is common in the count... more Currently use of conventional compost and vermicompost for crop production is common in the country but their nutrient concentrations were not known. Therefore, there is a need to determine the nutrient concentrations to know the quality of conventional compost and conventional compost for crop production. Consequently, an experiment was conducted to determine the nutrient concentrations of conventional compost and vermicompost prepared from different crop residue, bedding and feed wastes at Ambo in 2017 and 2018 cropping season. The decomposed conventional compost and vermicompost were prepared following laboratory procedures and analyzed for different nutrient concentration at Holetta Research Soil and Plant Laboratory. Higher total nitrogen (0.696 %) was obtained with compost produced from ratio of 15:5 kg of wheat residue with farmyard manure followed by 15:7.5: 2.5 kg wheat residue: faba bean residue and farmyard manure combinations with total nitrogen concentration of 0.610 %....
Nitrogen is the most yield liming nutrient that can be highly soluble and lost through leaching, ... more Nitrogen is the most yield liming nutrient that can be highly soluble and lost through leaching, volatilization and denitrification. In this view an experiment was conducted to determine the effects of urea stable and convectional urea on nitrogen use efficiency and crop performance of wheat in Vertisols of Ambo District, west Shewa Zone. The experiment was laid out in randomized complete block design with three replications. The treatments were different rate of urea stable and convectional urea applied at planting and in split: (Control, 23 kg N ha-1 from urea stable applied once at planting, 23 kg N ha-1 from urea stable in split application, 46 kg N ha-1 from urea stable in split application, 46 kg N ha-1 from urea stable applied once at planting, 46 kg N ha-1 from urea in split application, 69 kg N ha-1 from urea stable in split application, 69 kg N ha-1 from urea in split application, 69 kg N ha-1 from urea stable applied once at planting). Agronomic use efficiency was significantly varied among applied urea stable and convectional urea during first year. Significantly higher (32.77 and 40.8 kg grain/ kg N applied) agronomic efficiency of wheat from farm one (1) and two (2) were recorded by application of 23 kg N ha-1 from urea stable in split form. Mean grain yield, dry biomass, harvest index, plant height and spike length of wheat were significantly affected with application of urea stable and convectional urea. The highest mean spike length (6.6cm), plant height (80cm), harvest index (45%) and thousand seed weight (45g) were recorded from split application of 69 kg N ha-1 in the form of urea stable fertilizer. Wheat grain yield of 3623 kg ha-1 and dry biomass 8921 kg ha-1 were recorded from split application of 69 kg N ha-1 from conventional urea fertilizer. Statistically significant difference of yield and yield components of wheat were not observed by applying similar rate of urea stable and convectional urea. Therefore, urea stable and convectional urea could be used as alternatively for wheat production in study area.
Barley is an important food and beverage crop in the highlands of Ethiopia, although intensive cu... more Barley is an important food and beverage crop in the highlands of Ethiopia, although intensive cultivation and suboptimal fertilizer application have caused nutrient depletion and yield decline. With this in view, integrated inorganic and organic fertilizer sources on yield and yield components of barley were studied. Ten treatments involving the sole NP, vermicompost, conventional compost, and farmyard manure based on N equivalency were laid out in a randomized complete block design with three replications in 2015 and 2016 cropping seasons. Significantly higher grain yield and biomass yield of barley were obtained with the application of sole recommended NP and the integrated use of 50 : 50% vermicompost and conventional compost with recommended NP. Mean grain yield of 2567 and 2549 kg·ha−1 barley was obtained from application of 50 :50% conventional compost and vermicompost based on N equivalence with recommended NP fertilizer rate, which markedly reduce the cost of chemical NP fe...
The field experiment was conducted in 2018 and 2019 cropping season to determine the effects of u... more The field experiment was conducted in 2018 and 2019 cropping season to determine the effects of urea stable and urea on nitrogen use efficiency and maize performance in highland Nitisol of Midakegn and Toke Kutaye districts. The experiment was laid out in randomized complete block design with three replications. Nine treatments of urea stable and urea with different application times was used. Application of different nitrogen rate from urea stable and urea were significantly (P < 0.05) influenced mean plant height, leaf area index, dry biomass, grain yield, thousand seed weight and harvest index of maize crop. Significantly higher mean leaf area index (4.1), thousand seed weight (357 g), dry biomass (16472 kg ha-1) and grain yield (5475 kg ha-1) were recorded from split application of 138 kg N ha-1 from urea stable whereas higher mean plant height was recorded from split application 138 kg N ha-1 from urea. Application of nitrogen rate were also affected nitrogen uptake and agro...
Maize is a major staple crop grown and widely consumed in western Ethiopia but it is low due to d... more Maize is a major staple crop grown and widely consumed in western Ethiopia but it is low due to declining soil fertility and requires application of high fertilizer for optimum production. A field experiment was carried out on farmers’ field to study the effect of blended NPSB and urea fertilizer rate on yield and yield components, and economics of highland maize for two consecutive cropping seasons on Ultisol of Liben Jawi district. Three rates of nitrogen (150 250 and 350 kg urea ha-1) and four rates of blended NPSB (150, 200, 250 and 300 kg NPSB ha-1) were combined in factorial arrangement forming 12 treatments and tested with negative control and recommended (119/69 kg NP ha-1). The experiment was laid out in randomized complete block design with three replications. Combined application of blended NPSB and Urea was significantly affected mean yield and yield components of maize. Significantly higher biomass and grain yield of maize were obtained with application of higher nitrog...
Maize growers need balanced crop nutrition to maximize its yield potential and get the most out o... more Maize growers need balanced crop nutrition to maximize its yield potential and get the most out of their fertilizer investment. In practice, this requires making all of the required nutrients available to the maize crop by the right amount or rate. So, the objective was to determine the optimum blended (NPSZnB) and urea fertilizer rates on growth, yield and yield components of maize in Toke Kutaye district west Showa Zone. The experiment was laid out using randomized complete block design in factorial arrangement with three replications. The treatments consisting of four rates of blended (150, 200, 250, 300 kg NPSZnB ha ) and 1 three rates of Urea (150, 250 and 350 kg ha ) were tested with negative control and blanket recommended NP 1 (119/69 kg ha ) having a total of 14 treatments for 2018/2019 and 2019/2020 cropping seasons. Application of 1 urea and blended fertilizer levels were significantly (P<0.05) affected almost all the growth, yield and yield components of maize in both...
Currently use of conventional compost and vermicompost for crop production is common in the count... more Currently use of conventional compost and vermicompost for crop production is common in the country but their nutrient concentrations were not known. Therefore, there is a need to determine the nutrient concentrations to know the quality of conventional compost and conventional compost for crop production. Consequently, an experiment was conducted to determine the nutrient concentrations of conventional compost and vermicompost prepared from different crop residue, bedding and feed wastes at Ambo in 2017 and 2018 cropping season. The decomposed conventional compost and vermicompost were prepared following laboratory procedures and analyzed for different nutrient concentration at Holetta Research Soil and Plant Laboratory. Higher total nitrogen (0.696 %) was obtained with compost produced from ratio of 15:5 kg of wheat residue with farmyard manure followed by 15:7.5: 2.5 kg wheat residue: faba bean residue and farmyard manure combinations with total nitrogen concentration of 0.610 %....
Nitrogen is the most yield liming nutrient that can be highly soluble and lost through leaching, ... more Nitrogen is the most yield liming nutrient that can be highly soluble and lost through leaching, volatilization and denitrification. In this view an experiment was conducted to determine the effects of urea stable and convectional urea on nitrogen use efficiency and crop performance of wheat in Vertisols of Ambo District, west Shewa Zone. The experiment was laid out in randomized complete block design with three replications. The treatments were different rate of urea stable and convectional urea applied at planting and in split: (Control, 23 kg N ha-1 from urea stable applied once at planting, 23 kg N ha-1 from urea stable in split application, 46 kg N ha-1 from urea stable in split application, 46 kg N ha-1 from urea stable applied once at planting, 46 kg N ha-1 from urea in split application, 69 kg N ha-1 from urea stable in split application, 69 kg N ha-1 from urea in split application, 69 kg N ha-1 from urea stable applied once at planting). Agronomic use efficiency was significantly varied among applied urea stable and convectional urea during first year. Significantly higher (32.77 and 40.8 kg grain/ kg N applied) agronomic efficiency of wheat from farm one (1) and two (2) were recorded by application of 23 kg N ha-1 from urea stable in split form. Mean grain yield, dry biomass, harvest index, plant height and spike length of wheat were significantly affected with application of urea stable and convectional urea. The highest mean spike length (6.6cm), plant height (80cm), harvest index (45%) and thousand seed weight (45g) were recorded from split application of 69 kg N ha-1 in the form of urea stable fertilizer. Wheat grain yield of 3623 kg ha-1 and dry biomass 8921 kg ha-1 were recorded from split application of 69 kg N ha-1 from conventional urea fertilizer. Statistically significant difference of yield and yield components of wheat were not observed by applying similar rate of urea stable and convectional urea. Therefore, urea stable and convectional urea could be used as alternatively for wheat production in study area.
Barley is an important food and beverage crop in the highlands of Ethiopia, although intensive cu... more Barley is an important food and beverage crop in the highlands of Ethiopia, although intensive cultivation and suboptimal fertilizer application have caused nutrient depletion and yield decline. With this in view, integrated inorganic and organic fertilizer sources on yield and yield components of barley were studied. Ten treatments involving the sole NP, vermicompost, conventional compost, and farmyard manure based on N equivalency were laid out in a randomized complete block design with three replications in 2015 and 2016 cropping seasons. Significantly higher grain yield and biomass yield of barley were obtained with the application of sole recommended NP and the integrated use of 50 : 50% vermicompost and conventional compost with recommended NP. Mean grain yield of 2567 and 2549 kg·ha−1 barley was obtained from application of 50 :50% conventional compost and vermicompost based on N equivalence with recommended NP fertilizer rate, which markedly reduce the cost of chemical NP fe...
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