נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Water and salt distribution in a field irrigated with marginal water under high water table conditions
Year:
2001
Authors :
Ben-Hur, Meni
;
.
Keren, Rami
;
.
Shalit, Gil
;
.
Volume :
65
Co-Authors:

Ben-Hur, M., Agricultural Research Organization, Volcani Center, POB 6, Bet Dagan 50250, Israel
Li, F.H., Agricultural Research Organization, Volcani Center, POB 6, Bet Dagan 50250, Israel
Keren, R., Agricultural Research Organization, Volcani Center, POB 6, Bet Dagan 50250, Israel
Ravina, I., Agricultural Engineering, Technion, Israel Institute of Technology, Haifa 32000, Israel
Shalit, G., Agricultural Research Organization, Volcani Center, POB 6, Bet Dagan 50250, Israel

Facilitators :
From page:
191
To page:
198
(
Total pages:
8
)
Abstract:
Development of an impermeable layer at some depth beneath the soil surface and the presence of a high groundwater level are common phenomena in the Yizre'el Valley, Israel. The main objective of this study was to determine the salt and water distributions and salt leaching in a field irrigated by sprinklers, under nonisotropic and high groundwater level conditions. A field experiment was conducted in a cornfield (Zea mays L.) on a Vertisol (Typic Chromoxerets) with subsurface drains. The electrical conductivity (EC) of the irrigation water was 2.5 dS m-1. The variations in water table level, in EC of soil solution and soil saturation paste, and in gravimetric water content along the field were determined at different times. Likewise, corn yield from various sites across the field was determined at the end of the growing season (August). The water table level increased sharply in the winter to 49.5 m, and then decreased continuously in the summer despite the irrigation. The EC increased in the downhill direction, more sharply in the deeper soil layers. In the upper part of the field, the average EC in saturation paste in the 0- to 1.2-m soil layer was 1.1 dS m-1 in March (end of the rainfall season) and 2.1 dS m-1 in August. Conversely, in the lower part of the field, the ECs in March and August were 4.4 and 3.7 dS m-1, respectively. A linear reduction of the corn yield with increasing EC was observed. The relatively low level of the groundwater at the upper part of the field allowed vertical salt leaching by the rainfall. Conversely, the rise of the saline (EC ≈20 dS m-1) groundwater in the lower part of the field in the winter with lateral salt movement increased the soil EC. Decline of the water table in the latter part in the summer allowed vertical leaching of salt by the irrigation water.
Note:
Related Files :
irrigation
irrigation water
Leaching
salt
soil properties
soil property
water
water table
Yizre'el Valley
Zea mays
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
30301
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:53
You may also be interested in
Scientific Publication
Water and salt distribution in a field irrigated with marginal water under high water table conditions
65

Ben-Hur, M., Agricultural Research Organization, Volcani Center, POB 6, Bet Dagan 50250, Israel
Li, F.H., Agricultural Research Organization, Volcani Center, POB 6, Bet Dagan 50250, Israel
Keren, R., Agricultural Research Organization, Volcani Center, POB 6, Bet Dagan 50250, Israel
Ravina, I., Agricultural Engineering, Technion, Israel Institute of Technology, Haifa 32000, Israel
Shalit, G., Agricultural Research Organization, Volcani Center, POB 6, Bet Dagan 50250, Israel

Water and salt distribution in a field irrigated with marginal water under high water table conditions
Development of an impermeable layer at some depth beneath the soil surface and the presence of a high groundwater level are common phenomena in the Yizre'el Valley, Israel. The main objective of this study was to determine the salt and water distributions and salt leaching in a field irrigated by sprinklers, under nonisotropic and high groundwater level conditions. A field experiment was conducted in a cornfield (Zea mays L.) on a Vertisol (Typic Chromoxerets) with subsurface drains. The electrical conductivity (EC) of the irrigation water was 2.5 dS m-1. The variations in water table level, in EC of soil solution and soil saturation paste, and in gravimetric water content along the field were determined at different times. Likewise, corn yield from various sites across the field was determined at the end of the growing season (August). The water table level increased sharply in the winter to 49.5 m, and then decreased continuously in the summer despite the irrigation. The EC increased in the downhill direction, more sharply in the deeper soil layers. In the upper part of the field, the average EC in saturation paste in the 0- to 1.2-m soil layer was 1.1 dS m-1 in March (end of the rainfall season) and 2.1 dS m-1 in August. Conversely, in the lower part of the field, the ECs in March and August were 4.4 and 3.7 dS m-1, respectively. A linear reduction of the corn yield with increasing EC was observed. The relatively low level of the groundwater at the upper part of the field allowed vertical salt leaching by the rainfall. Conversely, the rise of the saline (EC ≈20 dS m-1) groundwater in the lower part of the field in the winter with lateral salt movement increased the soil EC. Decline of the water table in the latter part in the summer allowed vertical leaching of salt by the irrigation water.
Scientific Publication
You may also be interested in