No abstract

Soil fertility management through inorganic fertilizer application in areas with moisture shortage needs due care. the fertilizer application fashion should vary from areas with ample moisture so that the plants can easily access and efficiently use it. Therefore, field experiment was conducted in 2014 and 2015 during the main cropping season under rain-fed condition to evaluate the effect of micro-dose application of n and p fertilizers on sorghum yield at Aybra and Shumshiha sites of Wag-Lasta areas in Amhara Region, ethiopia where moisture shortage is acute. the treatments were comprised of a factorial combination of three levels of NP i.e. 1), 25% of the recommended NP = 10.25 kg N + 11.5 kg p 2 o 5 ha −1 , 2), 50% of the recommended NP = 20.5 kg N + 23 kg P 2 o 5 ha −1 and 3), 75% of the recommended np = 30.75 kg N + 34.75 kg P 2 o 5 ha −1 and three n application times plus control (without fertilizer) and recommended NP (41 kg N ha −1 and 46 kg P 2 o 5 ha −1 ). The experiment was laid down in a randomized complete block design with three replications. the fertilizers were applied to the spot where the seed was planted except for the recommended NP which was drilled to the planting rows right before planting. phosphorus was applied at planting while nitrogen was applied in split as per the treatment setup. All soil and agronomic data were collected and analyzed following the standard procedures. The analysis of variance revealed that application of 30.75 kg N ha −1 and 34.5 kg P 2 o 5 ha −1 (N applied 1/3 at sowing, 1/3 at emergence and 1/3 at 45 days after emergence) increased the grain yield by 122% over the control and 28.4% over the recommended NP and saves 25% of the recommended fertilizer at Aybra. While at Shumshiha-Lasta Lalibela, application of 20.5 kg N ha −1 and 23 kg P 2 o 5 ha −1 (N applied 1/3 at sowing, 1/3 at emergence and 1/3 at 45 days after emergence) increased the grain yield by 174% over the control and 15% over the recommended NP and saves 50% of the recommended fertilizer. Therefore, micro-dosing application of 30.75 kg N ha −1 and 34.5 kg P 2 o 5 ha −1 for Aybra-Sekota and of 20.5 kg N ha −1 and 23 kg P 2 o 5 ha −1 for Shumshiha-Lasta Lalibela (n applied in three splits) are recommended for sorghum production. open Scientific RepoRtS | (2020) 10:6889 | https://doi.

Background Production and productivity of potato in Ethiopia is far below the world average because of soil fertility problem, pest, disease, and agronomic factors. Nutrient depletion because of soil erosion is a serious problem in Ethiopian highlands. Annually, 122 kg ha−1 nitrogen, 13 kg ha−1 phosphorous and 82 kg ha−1 potasium were estimated to deplete from Ethiopia (Haileslassie et al. 2005). From the essential nutrients especially, nitrogen and phosphorus are the most important influential elements for production of potato but they are deficient in most Ethiopian soils and thus an application of these nutrients could increase significantly the crop yields. Therefore, the experiment was conducted at Sekota and Lasta Lalibela districts (Woleh and Kechin Abeba irrigation command areas) of eastern Amhara, Ethiopia to investigate the effects of nitrogen and phosphorus fertilizers for yield and yield component of potato under irrigation condition. Methods Four rates of nitrogen (0, 46, 92, and 138 kg N kg ha−1) and phosphorus (0, 23, 46, and 69 Kg P2O5 kg ha−1) were combined with factorial arrangement and laid out in randomized complete block design with three replications. Results The result of the study revealed that nitrogen and phosphorus had a significant effect on plant height, marketable, and total yield of potato at Kechin Abeba. But phosphorus did not show a significant effect on plant height and unmarketable yield at Sekota district of Woleh irrigation command area. The highest yield 45.55 t ha−1 was obtained from combined application of 138 N and 23 P2O5 in Lalibela 17.12 and 16.99 t ha−1 were found from application of 138 N with 46 P2O5 kg ha−1 and 138 N with 23 P2O5 kg ha−1 from Sekota district of Woleh irrigation command area respectively. Conclusions The application of 138 kg ha−1 N with 23 kg ha−1 P2O5 is the appropriate rates for optimum productivity of potato at Lalibela (Kechin Abeba) and Sekota (Woleh) irrigation command areas and the same agro-ecology.

Background: Production and productivity of potato in Ethiopia is far below the world average due to soil fertility problem, pest, disease, and agronomic factors. Nutrient depletion due to soil erosion is a serious problem in Ethiopian highlands. Annually, nitrogen 122 kg ha-1 P 13 kg ha-1 and K 82 kg ha-1 were estimated to deplete from Ethiopia (Haileslassie et al., 2005). The essential nutrients like, nitrogen and phosphorus are the most important influential nutrient for the production of potato but they are deficient in most Ethiopian soils and thus an application of these nutrients could increase significantly the crop yields. In this context, an experiment was conducted at Sekota and Lasta Lalibela districts (Woleh and Kechin Abeba irrigation command areas) of eastern Amhara to investigate the effects of nitrogen and phosphorus fertilizers for yield and yield component of potato under irrigation condition. Methods: Four rates of nitrogen (0, 46, 92, and 138 kg N kg ha-1) and four rates of phosphorus (0, 23, 46, and 69 Kg P2O5 kg ha-1) were combined in the factorial arrangement and laid out in randomized complete block design with three replications. Results: The result of the study revealed that nitrogen and phosphorus had a significant effect on plant height, marketable, and total yield of potato at Kechin Abeba. But phosphorus did not show a significant effect on plant height and unmarketable yield at Sekota district of Woleh irrigation command area. The highest yield 45.55 t ha-1 was obtained from in combined application of 138 N and 23 P2O5 in Lalibela and 17.12 t ha-1 was obtained from in combined application of 138 N kg ha-1 and 46 P2O5 kg ha-1 from Sekota districts of Woleh irrigation command area. Conclusion: The application of nitrogen and phosphorous fertilizer in the study area were more efficient in terms of tuber yield in Lalibela (Kechin Abeba) than Woleh. The application of 138 kg ha-1 N combined with 23 kg ha-1 P2O5 is found to be the appropriate rates for optimum productivity of Potato at Lalibela (Kechin Abeba) and Sekota (Woleh) under irrigation conditions and the same agro-ecology.

Background: Production and productivity of potato in Ethiopia is far below the world average due to soil fertility problem, pest, disease, and agronomic factors. Nutrient depletion due to soil erosion is a serious problem in Ethiopian highlands. Annually, 122 kg ha-1 nitrogen, 13 kg ha-1 phosphorous and 82 kg ha-1 potasium were estimated to deplete from Ethiopia (Haileslassie et al., 2005). The essential nutrients like, nitrogen and phosphorus are the most important influential nutrient for the production of potato but they are deficient in most Ethiopian soils and thus an application of these nutrients could increase significantly the crop yields. In this context, an experiment was conducted at Sekota and Lasta Lalibela districts (Woleh and Kechin Abeba irrigation command areas) of eastern Amhara, Ethiopia to investigate the effects of nitrogen and phosphorus fertilizers for yield and yield component of potato under irrigation condition. Methods: Four rates of nitrogen (0, 46, 92, and 138 kg N kg ha-1) and four rates of phosphorus (0, 23, 46, and 69 Kg P2O5 kg ha-1) were combined in the factorial arrangement and laid out in randomized complete block design with three replications. Results: The result of the study revealed that nitrogen and phosphorus had a significant effect on plant height, marketable, and total yield of potato at Kechin Abeba. But phosphorus did not show a significant effect on plant height and unmarketable yield at Sekota district of Woleh irrigation command area. The highest yield 45.55 t ha-1 was obtained from in combined application of 138 N and 23 P2O5 in Lalibela and 17.12 t ha-1 was obtained from in combined application of 138 N kg ha-1 and 46 P2O5 kg ha-1 from Sekota districts of Woleh irrigation command area. Conclusion: The application of 138 kg ha-1 N with 23 kg ha-1 P2O5 is the appropriate rates for optimum productivity of Potato at Lalibela (Kechin Abeba) and Sekota (Woleh) irrigation schemes and the same agro-ecology.