Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia

Siraj Beshir; Mulugeta Lemeneh; Endalkachew Kissi

doi:doi:10.11648/j.ijepp.20150305.14

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Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia

Siraj Beshir, Mulugeta Lemeneh, Endalkachew Kissi

Published in International Journal of Environmental Protection and Policy (Volume 3, Issue 5)

Received: 6 August 2015 Accepted: 19 August 2015 Published: 7 September 2015

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Abstract

The Impact of landscape positions and land use type on properties as well as land productivity are commonly observed in Ethiopia. The study was therefore conducted to quantify soil fertility and productivity trends under three land uses along the gradient (lower, middle and upper slope positions) of Nadda Assendabo watershed, Southwest Ethiopia. Thus field survey was covered a total of 54 composite soil samples using split plots (for soil physical properties) and split-split factorial arrangements with randomized complete block design from woodlot, grazing and crop land following topographic positions then different parameters were analyzed. The highest mean soil moisture content (56.68%) and porosity (71.09%) were observed for woodlot at the lower slope while the highest soil bulk density (1.74 g/cm³) was observed for soil crop land at the upper slope where as the lowest (0.94 g/cm³) was for woodlot at the lower slope. Sand, silt and clay fractions were significantly affected by interaction effects of slope and land uses (P≤0.01). Soil pH, electrical conductivity, organic carbon, cation exchange capacity, total nitrogen, available phosphorus, base saturation percentage and exchangeable basic cations for all land uses were increased down slope while they were affected significantly by slope steepness, land use and soil depth (P≤0.01). Therefore, electrical conductivity at middle and upper slope in grazing land and woodlot; total nitrogen, available phosphorus in crop land at lower slope was significantly different (P≤0.05) due to interaction effect. Furthermore, above ground biomass and grain yields of sorghum, maize and teff were also calculated on farm fields using split plots arrangements. Thus both yields were significantly affected by interaction effect of slope and crop type. Finally, based on the results woodlot, grazing and crop land were recommended for upper, middle and lower slopes respectively.

Published in	International Journal of Environmental Protection and Policy (Volume 3, Issue 5)
DOI	10.11648/j.ijepp.20150305.14
Page(s)	137-144
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), 2015. Published by Science Publishing Group

Keywords

Toposequence, Biomass and Grain Yield, Productivity Indicators

References

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Siraj Beshir, Mulugeta Lemeneh, Endalkachew Kissi. (2015). Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia. International Journal of Environmental Protection and Policy, 3(5), 137-144. https://doi.org/10.11648/j.ijepp.20150305.14

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ACS Style

Siraj Beshir; Mulugeta Lemeneh; Endalkachew Kissi. Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia. Int. J. Environ. Prot. Policy 2015, 3(5), 137-144. doi: 10.11648/j.ijepp.20150305.14

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AMA Style

Siraj Beshir, Mulugeta Lemeneh, Endalkachew Kissi. Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia. Int J Environ Prot Policy. 2015;3(5):137-144. doi: 10.11648/j.ijepp.20150305.14

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@article{10.11648/j.ijepp.20150305.14,
  author = {Siraj Beshir and Mulugeta Lemeneh and Endalkachew Kissi},
  title = {Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia},
  journal = {International Journal of Environmental Protection and Policy},
  volume = {3},
  number = {5},
  pages = {137-144},
  doi = {10.11648/j.ijepp.20150305.14},
  url = {https://doi.org/10.11648/j.ijepp.20150305.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepp.20150305.14},
  abstract = {The Impact of landscape positions and land use type on properties as well as land productivity are commonly observed in Ethiopia. The study was therefore conducted to quantify soil fertility and productivity trends under three land uses along the gradient (lower, middle and upper slope positions) of Nadda Assendabo watershed, Southwest Ethiopia. Thus field survey was covered a total of 54 composite soil samples using split plots (for soil physical properties) and split-split factorial arrangements with randomized complete block design from woodlot, grazing and crop land following topographic positions then different parameters were analyzed. The highest mean soil moisture content (56.68%) and porosity (71.09%) were observed for woodlot at the lower slope while the highest soil bulk density (1.74 g/cm3) was observed for soil crop land at the upper slope where as the lowest (0.94 g/cm3) was for woodlot at the lower slope. Sand, silt and clay fractions were significantly affected by interaction effects of slope and land uses (P≤0.01). Soil pH, electrical conductivity, organic carbon, cation exchange capacity, total nitrogen, available phosphorus, base saturation percentage and exchangeable basic cations for all land uses were increased down slope while they were affected significantly by slope steepness, land use and soil depth (P≤0.01). Therefore, electrical conductivity at middle and upper slope in grazing land and woodlot; total nitrogen, available phosphorus in crop land at lower slope was significantly different (P≤0.05) due to interaction effect. Furthermore, above ground biomass and grain yields of sorghum, maize and teff were also calculated on farm fields using split plots arrangements. Thus both yields were significantly affected by interaction effect of slope and crop type. Finally, based on the results woodlot, grazing and crop land were recommended for upper, middle and lower slopes respectively.},
 year = {2015}
}

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TY  - JOUR
T1  - Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia
AU  - Siraj Beshir
AU  - Mulugeta Lemeneh
AU  - Endalkachew Kissi
Y1  - 2015/09/07
PY  - 2015
N1  - https://doi.org/10.11648/j.ijepp.20150305.14
DO  - 10.11648/j.ijepp.20150305.14
T2  - International Journal of Environmental Protection and Policy
JF  - International Journal of Environmental Protection and Policy
JO  - International Journal of Environmental Protection and Policy
SP  - 137
EP  - 144
PB  - Science Publishing Group
SN  - 2330-7536
UR  - https://doi.org/10.11648/j.ijepp.20150305.14
AB  - The Impact of landscape positions and land use type on properties as well as land productivity are commonly observed in Ethiopia. The study was therefore conducted to quantify soil fertility and productivity trends under three land uses along the gradient (lower, middle and upper slope positions) of Nadda Assendabo watershed, Southwest Ethiopia. Thus field survey was covered a total of 54 composite soil samples using split plots (for soil physical properties) and split-split factorial arrangements with randomized complete block design from woodlot, grazing and crop land following topographic positions then different parameters were analyzed. The highest mean soil moisture content (56.68%) and porosity (71.09%) were observed for woodlot at the lower slope while the highest soil bulk density (1.74 g/cm3) was observed for soil crop land at the upper slope where as the lowest (0.94 g/cm3) was for woodlot at the lower slope. Sand, silt and clay fractions were significantly affected by interaction effects of slope and land uses (P≤0.01). Soil pH, electrical conductivity, organic carbon, cation exchange capacity, total nitrogen, available phosphorus, base saturation percentage and exchangeable basic cations for all land uses were increased down slope while they were affected significantly by slope steepness, land use and soil depth (P≤0.01). Therefore, electrical conductivity at middle and upper slope in grazing land and woodlot; total nitrogen, available phosphorus in crop land at lower slope was significantly different (P≤0.05) due to interaction effect. Furthermore, above ground biomass and grain yields of sorghum, maize and teff were also calculated on farm fields using split plots arrangements. Thus both yields were significantly affected by interaction effect of slope and crop type. Finally, based on the results woodlot, grazing and crop land were recommended for upper, middle and lower slopes respectively.
VL  - 3
IS  - 5
ER  -

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Author Information

Siraj Beshir

Madawalabu University, Department of Plant Science, Bale Robe, Ethiopia
Mulugeta Lemeneh

International Livestock Research Institute (ILRI), Addis Ababa, Ethiopia
Endalkachew Kissi

Jimma University, Department of Natural Resource Management, Jimma, Ethiopia

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Siraj Beshir, Mulugeta Lemeneh, Endalkachew Kissi. (2015). Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia. International Journal of Environmental Protection and Policy, 3(5), 137-144. https://doi.org/10.11648/j.ijepp.20150305.14

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ACS Style

Siraj Beshir; Mulugeta Lemeneh; Endalkachew Kissi. Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia. Int. J. Environ. Prot. Policy 2015, 3(5), 137-144. doi: 10.11648/j.ijepp.20150305.14

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AMA Style

Siraj Beshir, Mulugeta Lemeneh, Endalkachew Kissi. Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia. Int J Environ Prot Policy. 2015;3(5):137-144. doi: 10.11648/j.ijepp.20150305.14

Copy | Download

@article{10.11648/j.ijepp.20150305.14,
  author = {Siraj Beshir and Mulugeta Lemeneh and Endalkachew Kissi},
  title = {Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia},
  journal = {International Journal of Environmental Protection and Policy},
  volume = {3},
  number = {5},
  pages = {137-144},
  doi = {10.11648/j.ijepp.20150305.14},
  url = {https://doi.org/10.11648/j.ijepp.20150305.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepp.20150305.14},
  abstract = {The Impact of landscape positions and land use type on properties as well as land productivity are commonly observed in Ethiopia. The study was therefore conducted to quantify soil fertility and productivity trends under three land uses along the gradient (lower, middle and upper slope positions) of Nadda Assendabo watershed, Southwest Ethiopia. Thus field survey was covered a total of 54 composite soil samples using split plots (for soil physical properties) and split-split factorial arrangements with randomized complete block design from woodlot, grazing and crop land following topographic positions then different parameters were analyzed. The highest mean soil moisture content (56.68%) and porosity (71.09%) were observed for woodlot at the lower slope while the highest soil bulk density (1.74 g/cm3) was observed for soil crop land at the upper slope where as the lowest (0.94 g/cm3) was for woodlot at the lower slope. Sand, silt and clay fractions were significantly affected by interaction effects of slope and land uses (P≤0.01). Soil pH, electrical conductivity, organic carbon, cation exchange capacity, total nitrogen, available phosphorus, base saturation percentage and exchangeable basic cations for all land uses were increased down slope while they were affected significantly by slope steepness, land use and soil depth (P≤0.01). Therefore, electrical conductivity at middle and upper slope in grazing land and woodlot; total nitrogen, available phosphorus in crop land at lower slope was significantly different (P≤0.05) due to interaction effect. Furthermore, above ground biomass and grain yields of sorghum, maize and teff were also calculated on farm fields using split plots arrangements. Thus both yields were significantly affected by interaction effect of slope and crop type. Finally, based on the results woodlot, grazing and crop land were recommended for upper, middle and lower slopes respectively.},
 year = {2015}
}

Copy | Download

TY  - JOUR
T1  - Soil Fertility Status and Productivity Trends Along a Toposequence: A Case of Gilgel Gibe Catchment in Nadda Assendabo Watershed, Southwest Ethiopia
AU  - Siraj Beshir
AU  - Mulugeta Lemeneh
AU  - Endalkachew Kissi
Y1  - 2015/09/07
PY  - 2015
N1  - https://doi.org/10.11648/j.ijepp.20150305.14
DO  - 10.11648/j.ijepp.20150305.14
T2  - International Journal of Environmental Protection and Policy
JF  - International Journal of Environmental Protection and Policy
JO  - International Journal of Environmental Protection and Policy
SP  - 137
EP  - 144
PB  - Science Publishing Group
SN  - 2330-7536
UR  - https://doi.org/10.11648/j.ijepp.20150305.14
AB  - The Impact of landscape positions and land use type on properties as well as land productivity are commonly observed in Ethiopia. The study was therefore conducted to quantify soil fertility and productivity trends under three land uses along the gradient (lower, middle and upper slope positions) of Nadda Assendabo watershed, Southwest Ethiopia. Thus field survey was covered a total of 54 composite soil samples using split plots (for soil physical properties) and split-split factorial arrangements with randomized complete block design from woodlot, grazing and crop land following topographic positions then different parameters were analyzed. The highest mean soil moisture content (56.68%) and porosity (71.09%) were observed for woodlot at the lower slope while the highest soil bulk density (1.74 g/cm3) was observed for soil crop land at the upper slope where as the lowest (0.94 g/cm3) was for woodlot at the lower slope. Sand, silt and clay fractions were significantly affected by interaction effects of slope and land uses (P≤0.01). Soil pH, electrical conductivity, organic carbon, cation exchange capacity, total nitrogen, available phosphorus, base saturation percentage and exchangeable basic cations for all land uses were increased down slope while they were affected significantly by slope steepness, land use and soil depth (P≤0.01). Therefore, electrical conductivity at middle and upper slope in grazing land and woodlot; total nitrogen, available phosphorus in crop land at lower slope was significantly different (P≤0.05) due to interaction effect. Furthermore, above ground biomass and grain yields of sorghum, maize and teff were also calculated on farm fields using split plots arrangements. Thus both yields were significantly affected by interaction effect of slope and crop type. Finally, based on the results woodlot, grazing and crop land were recommended for upper, middle and lower slopes respectively.
VL  - 3
IS  - 5
ER  -

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