Nitrogen and salt leaching from two typical texas turf soils irrigated with degraded water

Runbin Duan, Clifford B. Fedler

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Although land application of degraded water onto turf is a promising approach in arid and semiarid areas to reduce the use of fresh water for irrigation, there are two risks to be considered: potential nitrate contamination to groundwater and salt accumulation in the soil. A combined mass balance design approach has been proposed earlier by the authors to reduce these two risks. However, limited information is available to test and improve the method. An 18-month study was conducted to investigate the environmental impacts of land application of degraded water onto two typical Texas soils with different grass cover using the combined mass balance approach. The study was implemented by lysimeters irrigated by degraded water from a natural waste treatment system. No significant nitrate contamination to the groundwater was found in either type of the soils through 11/2 year of monitoring. Salt was found to accumulate, but the soil salinity was in the range of grass tolerance to soil salinity.

Original languageEnglish
Pages (from-to)787-793
Number of pages7
JournalEnvironmental Engineering Science
Volume28
Issue number11
DOIs
StatePublished - Nov 1 2011

Keywords

  • land application
  • mass balance approach
  • soil salinity
  • sustainable water reuse

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