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United States Department of Agriculture

Agricultural Research Service

Title: Phytoextraction of Selenium from Soils Irrigated with Selenium-Laden Effluent.

Author
item Banuelos, Gary

Submitted to: Plant and Soil
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: January 1, 2000
Publication Date: N/A

Interpretive Summary: Drainage water reuse is proposed for reducing the volume of saline drainage water in the west side of central California. Saline effluent collected in some regions of central California contains potentially a new hazard to long term reuse, namely the presence of selenium. Phytoextraction of selenium is a proposed strategy for reducing Se levels in irrigated agricultural soils. The objective of this study is to determine the efficiency of canola, Indian mustard, and barley to extract selenium from soils irrigated with selenium-laden effluent. The results show that accumulation of selenium by both canola and Indian mustard significantly reduced the residual selenium deposited in the soil by the effluent. In addition to plant accumulation of selenium, leaching and possibly volatilization contributed to losses of residual selenium. Long-term field studies are essential to determine the potential effectiveness of canola and Indian mustard to tolerate poor quality water, and extract and volatilize selenium under hot summer conditions present in central California.

Technical Abstract:

Last Modified: 8/27/2014
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