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Vol.3 , No. 2, Publication Date: Jul. 19, 2016, Page: 8-17
, BD, PD, TP, FC, PWP, AWHC studied were significantly affected (P ≤ 0.05 and/or P ≤ 0.01) by salt affected soil except sand was non-significant in Fluvisols. In Vertisols, clay, BD, PD, TP and PWP non-significantly affected salt affected soil but the rest parameters were significantly affected. The correlation analysis bulk density also affects TP and AWHC. Association of bulk density with ESP and OM was positively and negatively correlated and the reverse is true for both TP and AWHC. Furthermore, BD and TP were significantly (P < 0.05) affected by soil depth in both soil types.&picture=http://www.aascit.org/aascit/decorators/img/journal/923.jpg)
| [1] | Ashenafi Worku, Ethiopian Institute of Agricultural Research, Addis Ababa, Ethiopia. |
| [2] | Bobe Bedadi, Department of Nature Resource Management and Environmental Science, College of Agriculture and Environmental Science, Haramaya University, Dire Dawa, Ethiopia. |
The objective of this study was to investigate the status of soil physical properties in different salt affected soil classes of Amibara irrigation project areas, central rift valley of Ethiopia. A total 400 soil samples were collected and analyzed for critical salinity and sodicity parameters in both Vertisols and Fluvisols. Based on analytical results, the study area was classified into 6 mapping units: non-saline non-sodic and saline soil in Vertisols; whereas in Fluvisols, non-saline non-sodic, saline, saline-sodic and sodic soils. Triplicate soil samples from 6 mapping units with 2 depths, a total of 36 soil samples were used for determination of soil properties. Standard procedures were employed for the analyses of soil parameters. The results of the study revealed that the soil texture (silt and clay), BD, PD, TP, FC, PWP, AWHC studied were significantly affected (P ≤ 0.05 and/or P ≤ 0.01) by salt affected soil except sand was non-significant in Fluvisols. In Vertisols, clay, BD, PD, TP and PWP non-significantly affected salt affected soil but the rest parameters were significantly affected. The correlation analysis bulk density also affects TP and AWHC. Association of bulk density with ESP and OM was positively and negatively correlated and the reverse is true for both TP and AWHC. Furthermore, BD and TP were significantly (P < 0.05) affected by soil depth in both soil types.
Keywords
Soil Physical Properties, Salinity, Sodicity, Soil Types, Vertisols and Fluvisols
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