נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Long term irrigation with treated wastewater (TWW) and soil sodification
Year:
2014
Source of publication :
Biosystems Engineering
Authors :
איזנקוט, אשר
;
.
גולדשטיין, דינה
;
.
זילברמן, אברהם
;
.
לוי, גיא
;
.
פיין, פנחס
;
.
Volume :
128
Co-Authors:
Levy, G.J., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Fine, P., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Goldstein, D., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Azenkot, A., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Zilberman, A., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Chazan, A., Agricultural Extension Service, Ministry of Agriculture and Rural Development, Israel
Grinhut, T., Agricultural Extension Service, Ministry of Agriculture and Rural Development, Israel
Facilitators :
From page:
4
To page:
10
(
Total pages:
7
)
Abstract:
Use of treated wastewater (TWW) for irrigation has grown noticeably in recent years, especially in arid and semi-arid regions. The sodium adsorption ratio (SAR) in TWW is considerably higher than that in its fresh water of origin. Recently, there is evidence showing that subsurface (depth >30cm) exchangeable sodium percentage (ESP) levels in Israeli orchards may reach 6-9 which is higher than expected following long-term irrigation with TWW having SAR <5. Our objectives were to (i) determine the ESP in soil profiles of orchards exposed to irrigation with TWW, and (ii) examine the relationships between the SAR of the irrigation water, the SAR of the soil solution and the ESP of the studied soils. Soil samples were taken from different depths (up to 120cm) in orchards grown on two different soil types that had been irrigated for >10 years with TWW. In each soil sample non-adjusted SAR and adjusted SAR (SARadj) of the saturated paste and ESP were determined. In all sampled sites except one, accumulation of adsorbed sodium in the soil subsurface was noted. The obtained ESP levels were higher than those expected based on the SAR of the TWW. A satisfactory agreement was noted between ESP data and the non-adjusted SAR and SARadj of the soil solution. These observations suggest that a chemical equilibrium exists between the soil exchange phase and the soil solution and that the properties of the latter were not always dictated by those of the irrigation water. © 2014 IAgrE.
Note:
Related Files :
irrigation
soil surveys
wastewater treatment
water
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.biosystemseng.2014.05.004
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32082
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:07
Scientific Publication
Long term irrigation with treated wastewater (TWW) and soil sodification
128
Levy, G.J., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Fine, P., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Goldstein, D., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Azenkot, A., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Zilberman, A., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Chazan, A., Agricultural Extension Service, Ministry of Agriculture and Rural Development, Israel
Grinhut, T., Agricultural Extension Service, Ministry of Agriculture and Rural Development, Israel
Long term irrigation with treated wastewater (TWW) and soil sodification
Use of treated wastewater (TWW) for irrigation has grown noticeably in recent years, especially in arid and semi-arid regions. The sodium adsorption ratio (SAR) in TWW is considerably higher than that in its fresh water of origin. Recently, there is evidence showing that subsurface (depth >30cm) exchangeable sodium percentage (ESP) levels in Israeli orchards may reach 6-9 which is higher than expected following long-term irrigation with TWW having SAR <5. Our objectives were to (i) determine the ESP in soil profiles of orchards exposed to irrigation with TWW, and (ii) examine the relationships between the SAR of the irrigation water, the SAR of the soil solution and the ESP of the studied soils. Soil samples were taken from different depths (up to 120cm) in orchards grown on two different soil types that had been irrigated for >10 years with TWW. In each soil sample non-adjusted SAR and adjusted SAR (SARadj) of the saturated paste and ESP were determined. In all sampled sites except one, accumulation of adsorbed sodium in the soil subsurface was noted. The obtained ESP levels were higher than those expected based on the SAR of the TWW. A satisfactory agreement was noted between ESP data and the non-adjusted SAR and SARadj of the soil solution. These observations suggest that a chemical equilibrium exists between the soil exchange phase and the soil solution and that the properties of the latter were not always dictated by those of the irrigation water. © 2014 IAgrE.
Scientific Publication
You may also be interested in