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Microbial application with gypsum increases the saturated hydraulic conductivity of saline-sodic soils
Date
2011-06-01
Author
Sahin s, Ustun
Eroğlu, Seçkin
Sahin, Fikrettin
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Microbial application for the amelioration of sodic and saline-sodic soils may reduce the economic and environmental costs of chemical amendments. The effect of microbial application on saturated hydraulic conductivities of four different saline-sodic soils which were being ameliorated with gypsum was studied. Suspensions of three fungal isolates (Aspergillus spp. FS 9, 11 and Alternaria spp. FS 8) and two bacterial strains (Bacillus subtilis OSU 142 and Bacillus megaterium M3) at 10(4) spore/ml and 10(9) CFU/ml, respectively, were mixed with leaching water and applied to the soil columns. The measured saturated hydraulic conductivities of soil columns after the treatment indicated that saturated hydraulic conductivity of saline-sodic soils increased significantly (P < 0.01) by application of the microorganisms. Average increase for all soils was 68%. The data suggest that microorganisms tested in the present study may have potential to help improve water movement through saline-sodic soils.
Subject Keywords
Saturated hydraulic conductivity
,
Saline-sodic soils
,
Remediation
,
Microorganisms
URI
https://hdl.handle.net/11511/37225
Journal
Applied Soil Ecology
DOI
https://doi.org/10.1016/j.apsoil.2011.04.001
Collections
Department of Biology, Article