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Changes in chemical properties of semiarid soils under long-term secondary treated wastewater irrigation
Year:
2012
Authors :
Assouline, Shmuel
;
.
Azenkot, Asher
;
.
Bar-Tal, Asher
;
.
Ben-Hur, Meni
;
.
Dasberg, Shmuel
;
.
Erner, Yair
;
.
Fine, Pinchas
;
.
Volume :
76
Co-Authors:
Lado, M., Area of Soil Science, Faculty of Sciences, Univ. of A Coruna, A Zapateira s/n 15071, Spain
Bar-Tal, A., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Azenkot, A., Agricultural Extension Service, Ministry of Agriculture, P.O. Box 6, Bet Dagan 50250, Israel
Assouline, S., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Ravina, I., Faculty of Civil and Environ. Eng. Technion, Haifa, Israel
Erner, Y., Institute of Plant Sciences, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Fine, P., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Dasberg, S., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Ben-Hur, M., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Facilitators :
From page:
1358
To page:
1369
(
Total pages:
12
)
Abstract:
Treated wastewater (TWW) is becoming a valuable resource for irrigation in semiarid regions, where freshwater is scarce; however, changes in soil chemical properties under TWW irrigation can have significant effects on agronomy, hydrology, and the environment. The effects of long-term irrigation with secondary TWW on chemical properties of two contrasting soils under semiarid Mediterranean conditions were determined in the present study. Experiments were conducted in two different grapefruit (Citrus paradise Macfad.) orchards, one with a noncalcareous sandy soil (a Typic Haploxeralf) and the other with a calcareous clayey soil (a Chromic Haploxerert). Two treatments were tested: (i) irrigation with fresh water and (ii) irrigation with domestic, secondary TTW. In both soils, a longterm irrigation (>7 yr) with TWW had insignificant effects on total organic matter content and concentrations of dissolved organic matter, Cu, Ni, and Zn in saturated paste extracts. In contrast, it increased salt accumulation in the upper ~1-m layer in both soils; however, this salt was leached during each rainy season below 1.5 m. Sodium adsorption ratio was higher under TWW than under freshwater irrigation down to at least the 4.0- and 0.7-m depths in the sandy and clayey soils, respectively. The high clay and CaCO 3 contents in the latter limited deeper movement of Na + ions. The dominant N species in the soils under TWW irrigation was NO 3 - due to nitrification, and its concentration increased in the whole sampling depth in both soils. Olsen P and K + accumulated in soil profiles above the 1.0-m depth. Boron concentration increased in the upper 1.75-m layer under TWW irrigation, where this concentration could be toxic to some crops. © Soil Science Society of America.
Note:
Related Files :
Boron
clayey soils
irrigation
sandy soils
soil chemistry
soil pollution
wastewater treatment
water
Show More
Related Content
More details
DOI :
10.2136/sssaj2011.0230
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
27218
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:29
Scientific Publication
Changes in chemical properties of semiarid soils under long-term secondary treated wastewater irrigation
76
Lado, M., Area of Soil Science, Faculty of Sciences, Univ. of A Coruna, A Zapateira s/n 15071, Spain
Bar-Tal, A., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Azenkot, A., Agricultural Extension Service, Ministry of Agriculture, P.O. Box 6, Bet Dagan 50250, Israel
Assouline, S., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Ravina, I., Faculty of Civil and Environ. Eng. Technion, Haifa, Israel
Erner, Y., Institute of Plant Sciences, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Fine, P., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Dasberg, S., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Ben-Hur, M., Institute of Soil, Water and Environmental Sciences, ARO, Volcani Centre, Bet-Dagan 50250, Israel
Changes in chemical properties of semiarid soils under long-term secondary treated wastewater irrigation
Treated wastewater (TWW) is becoming a valuable resource for irrigation in semiarid regions, where freshwater is scarce; however, changes in soil chemical properties under TWW irrigation can have significant effects on agronomy, hydrology, and the environment. The effects of long-term irrigation with secondary TWW on chemical properties of two contrasting soils under semiarid Mediterranean conditions were determined in the present study. Experiments were conducted in two different grapefruit (Citrus paradise Macfad.) orchards, one with a noncalcareous sandy soil (a Typic Haploxeralf) and the other with a calcareous clayey soil (a Chromic Haploxerert). Two treatments were tested: (i) irrigation with fresh water and (ii) irrigation with domestic, secondary TTW. In both soils, a longterm irrigation (>7 yr) with TWW had insignificant effects on total organic matter content and concentrations of dissolved organic matter, Cu, Ni, and Zn in saturated paste extracts. In contrast, it increased salt accumulation in the upper ~1-m layer in both soils; however, this salt was leached during each rainy season below 1.5 m. Sodium adsorption ratio was higher under TWW than under freshwater irrigation down to at least the 4.0- and 0.7-m depths in the sandy and clayey soils, respectively. The high clay and CaCO 3 contents in the latter limited deeper movement of Na + ions. The dominant N species in the soils under TWW irrigation was NO 3 - due to nitrification, and its concentration increased in the whole sampling depth in both soils. Olsen P and K + accumulated in soil profiles above the 1.0-m depth. Boron concentration increased in the upper 1.75-m layer under TWW irrigation, where this concentration could be toxic to some crops. © Soil Science Society of America.
Scientific Publication
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