Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7482138 | Journal of Environmental Management | 2015 | 7 Pages |
Abstract
Urbanization, industrial development, and intensive agriculture have caused soil contamination and land degradation in many areas of the world. Salinization is one important factor contributing to land degradation and it affects agricultural production and environmental quality. When salinization is combined with soil pollution by trace elements, as it occurs in many arid and semi-arid regions around the world, strategies to phyto-manage pollutants and sustain crop production need to be implemented. In this study, we present the case of saline soils in the West side of Central California which contain naturally-occurring selenium (Se), boron (B), and other salts, such as NaCl, CaCl2, Na2SO4, and Na2SeO4. To sustain crop production on Se- and B-laden arid saline soils, we investigated the potential of the halophyte “agretti” (Salsola soda L.) as an alternative crop. The aim of our greenhouse study was to examine adaptability, B tolerance, and Se accumulation by S. soda grown on soils collected from a typical saline-laden field site located on the West side of the San Joaquin Valley (SJV). Our results showed that S. soda tolerates the saline (EC â¼Â 10 dS mâ1) and B-laden soils (10 mg B Lâ1) of the SJV even with the additional irrigation of saline and B rich water (EC â¼Â 3 dS mâ1 and 4 mg B Lâ1). Under these growing conditions, the plant can accumulate high concentrations of Na (80 g Na kgâ1 DW), B (100 mg B kgâ1 DW), and Se (3-4 mg Se kgâ1 DW) without showing toxicity symptoms. Hence, S. soda showed promising potential as a plant species that can be grown in B-laden saline soils and accumulate and potentially manage excessive soluble Se and B in soil.
Related Topics
Physical Sciences and Engineering
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Renewable Energy, Sustainability and the Environment
Authors
Tiziana Centofanti, Gary Bañuelos,