TY - JOUR
T1 - Nitrogen and salt leaching from two typical texas turf soils irrigated with degraded water
AU - Duan, Runbin
AU - Fedler, Clifford B.
PY - 2011/11/1
Y1 - 2011/11/1
N2 - 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.
AB - 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.
KW - land application
KW - mass balance approach
KW - soil salinity
KW - sustainable water reuse
UR - http://www.scopus.com/inward/record.url?scp=80455124108&partnerID=8YFLogxK
U2 - 10.1089/ees.2011.0196
DO - 10.1089/ees.2011.0196
M3 - Article
AN - SCOPUS:80455124108
SN - 1092-8758
VL - 28
SP - 787
EP - 793
JO - Environmental Engineering Science
JF - Environmental Engineering Science
IS - 11
ER -