This fertilizer experiment was undertaken at Bule hora district, Eastern Guji zone, southern Ethiopia in 2016. The objective of the experiment was to study the effect of different NP rates on the yield and yield components of Irish potato to determine biological and economic optimum NP rate at the area. Adapted and recommended variety of Irish potato variety (Gudane) was used for the experiment under rainfall. The treatment consisted of combination of five levels of N (0, 50, 80, 110 and 140 kg N ha-1) and four levels of P (0, 45, 90 and 135 kg P ha-1). Data were collected on parameters like plant height, number of branch per hill, tuber weight, marketable yield per hectare, unmarketable yield per hectare and total yield per hectare. ANOVA and Partial budget analysis were used to determine biological and economic optimum NP rate. Tuber yield was significantly affected by both P and N levels. There was also a significant N and P interaction effect on tuber yield. The maximum total tuber yield (195.06qt ha-1) was obtained when 50 kg N ha-1 and 135 Kg P ha-1 were combined, and it was closely followed by 193.21 qt ha-1 obtained at 110-90 kg ha-1 NP combinations, resulting in grain yield benefit of 361 and 358% over the control, respectively. Almost all collected parameters were significantly affected by P rate but did not respond to N rate. This could be due to substantial amount of total N in the soil (0.61%) which was in the high range. As to partial budget analysis, treatment 110-90 kg ha-1 NP combination had highest net benefit and acceptable marginal rate of return (473.67%). Based on this experiment, 110-90Kg ha-1 NP combination was found profitable and recommended for Irish potato farmers of Bule hora district and similar areas.
| Published in | International Journal of Agricultural Economics (Volume 1, Issue 3) |
| DOI | 10.11648/j.ijae.20160103.14 |
| Page(s) | 71-77 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2016. Published by Science Publishing Group |
Irish Potato, Fertilizer, Yield, Yield Component
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APA Style
Desalegn Regassa, Wakene Tigre, Dawit Mellise, Tolessa Taye. (2016). Effects of Nitrogen and Phosphorus Fertilizer Levels on Yield and Yield Components of Irish Potato (Solanum tuberosum) at Bule Hora District, Eastern Guji Zone, Southern Ethiopia. International Journal of Agricultural Economics, 1(3), 71-77. https://doi.org/10.11648/j.ijae.20160103.14
ACS Style
Desalegn Regassa; Wakene Tigre; Dawit Mellise; Tolessa Taye. Effects of Nitrogen and Phosphorus Fertilizer Levels on Yield and Yield Components of Irish Potato (Solanum tuberosum) at Bule Hora District, Eastern Guji Zone, Southern Ethiopia. Int. J. Agric. Econ. 2016, 1(3), 71-77. doi: 10.11648/j.ijae.20160103.14
AMA Style
Desalegn Regassa, Wakene Tigre, Dawit Mellise, Tolessa Taye. Effects of Nitrogen and Phosphorus Fertilizer Levels on Yield and Yield Components of Irish Potato (Solanum tuberosum) at Bule Hora District, Eastern Guji Zone, Southern Ethiopia. Int J Agric Econ. 2016;1(3):71-77. doi: 10.11648/j.ijae.20160103.14
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Download@article{10.11648/j.ijae.20160103.14,
author = {Desalegn Regassa and Wakene Tigre and Dawit Mellise and Tolessa Taye},
title = {Effects of Nitrogen and Phosphorus Fertilizer Levels on Yield and Yield Components of Irish Potato (Solanum tuberosum) at Bule Hora District, Eastern Guji Zone, Southern Ethiopia},
journal = {International Journal of Agricultural Economics},
volume = {1},
number = {3},
pages = {71-77},
doi = {10.11648/j.ijae.20160103.14},
url = {https://doi.org/10.11648/j.ijae.20160103.14},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijae.20160103.14},
abstract = {This fertilizer experiment was undertaken at Bule hora district, Eastern Guji zone, southern Ethiopia in 2016. The objective of the experiment was to study the effect of different NP rates on the yield and yield components of Irish potato to determine biological and economic optimum NP rate at the area. Adapted and recommended variety of Irish potato variety (Gudane) was used for the experiment under rainfall. The treatment consisted of combination of five levels of N (0, 50, 80, 110 and 140 kg N ha-1) and four levels of P (0, 45, 90 and 135 kg P ha-1). Data were collected on parameters like plant height, number of branch per hill, tuber weight, marketable yield per hectare, unmarketable yield per hectare and total yield per hectare. ANOVA and Partial budget analysis were used to determine biological and economic optimum NP rate. Tuber yield was significantly affected by both P and N levels. There was also a significant N and P interaction effect on tuber yield. The maximum total tuber yield (195.06qt ha-1) was obtained when 50 kg N ha-1 and 135 Kg P ha-1 were combined, and it was closely followed by 193.21 qt ha-1 obtained at 110-90 kg ha-1 NP combinations, resulting in grain yield benefit of 361 and 358% over the control, respectively. Almost all collected parameters were significantly affected by P rate but did not respond to N rate. This could be due to substantial amount of total N in the soil (0.61%) which was in the high range. As to partial budget analysis, treatment 110-90 kg ha-1 NP combination had highest net benefit and acceptable marginal rate of return (473.67%). Based on this experiment, 110-90Kg ha-1 NP combination was found profitable and recommended for Irish potato farmers of Bule hora district and similar areas.},
year = {2016}
}
TY - JOUR T1 - Effects of Nitrogen and Phosphorus Fertilizer Levels on Yield and Yield Components of Irish Potato (Solanum tuberosum) at Bule Hora District, Eastern Guji Zone, Southern Ethiopia AU - Desalegn Regassa AU - Wakene Tigre AU - Dawit Mellise AU - Tolessa Taye Y1 - 2016/09/02 PY - 2016 N1 - https://doi.org/10.11648/j.ijae.20160103.14 DO - 10.11648/j.ijae.20160103.14 T2 - International Journal of Agricultural Economics JF - International Journal of Agricultural Economics JO - International Journal of Agricultural Economics SP - 71 EP - 77 PB - Science Publishing Group SN - 2575-3843 UR - https://doi.org/10.11648/j.ijae.20160103.14 AB - This fertilizer experiment was undertaken at Bule hora district, Eastern Guji zone, southern Ethiopia in 2016. The objective of the experiment was to study the effect of different NP rates on the yield and yield components of Irish potato to determine biological and economic optimum NP rate at the area. Adapted and recommended variety of Irish potato variety (Gudane) was used for the experiment under rainfall. The treatment consisted of combination of five levels of N (0, 50, 80, 110 and 140 kg N ha-1) and four levels of P (0, 45, 90 and 135 kg P ha-1). Data were collected on parameters like plant height, number of branch per hill, tuber weight, marketable yield per hectare, unmarketable yield per hectare and total yield per hectare. ANOVA and Partial budget analysis were used to determine biological and economic optimum NP rate. Tuber yield was significantly affected by both P and N levels. There was also a significant N and P interaction effect on tuber yield. The maximum total tuber yield (195.06qt ha-1) was obtained when 50 kg N ha-1 and 135 Kg P ha-1 were combined, and it was closely followed by 193.21 qt ha-1 obtained at 110-90 kg ha-1 NP combinations, resulting in grain yield benefit of 361 and 358% over the control, respectively. Almost all collected parameters were significantly affected by P rate but did not respond to N rate. This could be due to substantial amount of total N in the soil (0.61%) which was in the high range. As to partial budget analysis, treatment 110-90 kg ha-1 NP combination had highest net benefit and acceptable marginal rate of return (473.67%). Based on this experiment, 110-90Kg ha-1 NP combination was found profitable and recommended for Irish potato farmers of Bule hora district and similar areas. VL - 1 IS - 3 ER -
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