נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Wetting rate, sodicity, and soil texture effects on infiltration rate and runoff
Year:
2001
Authors :
Levy, Guy
;
.
Mamedov, Amrakh
;
.
Shainberg, Isaac
;
.
Volume :
39
Co-Authors:

Mamedov, A.I., Inst. of Soil, Water and Envtl. Sci., Agricultural Res. Organization (ARO), Volcani Center, PO Box 6, Bet-Dagan 50-250, Israel
Levy, G.J., Inst. of Soil, Water and Envtl. Sci., Agricultural Res. Organization (ARO), Volcani Center, PO Box 6, Bet-Dagan 50-250, Israel
Shainberg, I., Inst. of Soil, Water and Envtl. Sci., Agricultural Res. Organization (ARO), Volcani Center, PO Box 6, Bet-Dagan 50-250, Israel
Letey, J.

Facilitators :
From page:
1293
To page:
1305
(
Total pages:
13
)
Abstract:
Surface sealing is determined by aggregate disintegration and clay dispersion, which in turn depend on aggregate wetting rate, and soil sodicity and texture. We hypothesised that soil susceptibility to seal formation increases when the aggregate wetting rate (WR) is increased, and that the effect of WR depends on soil texture and soil sodicity. The objective of this study was to investigate the effects of WR on seal formation, by observing infiltration rate (IR) and runoff, in cultivated soils varying in clay content and exchangeable sodium percent (ESP). Effects of 3 wetting rates (2, 8, and 64 mm/h) on IR and runoff from 6 Israeli soils exposed to 60 mm of simulated rain of deionised water were studied in the laboratory. The soils ranged in clay from 8.8 to 68.3% and ESP levels from 0.9 to 20.4. Effects of WR on soil infiltration rate and runoff depended on soil texture and soil ESP In soils with low clay content (8.8%), the effect of WR on seal formation was negligible, whereas effect of ESP was significant. Conversely, in clay soils (>52.1%), WR had a predominant effect on 1R and runoff, while the effect of ESP was notable yet secondary to that of WR. The soils with intermediate clay content (22.5-40.2% clay) were the soils most susceptible to seal formation, with WR and ESP having moderate effects on seal formation. Effects of WR on aggregate disintegration and seal formation increased with increasing clay content and aggregate stability. Conversely, the role of ESP in determining sealing decreased with an increase in clay content and in WR.
Note:
Related Files :
Aggregates
Clay
computer simulation
Infiltration
Phocidae
runoff
sealing
Sodicity
Soils
soil texture
Surface sealing
Wetting
Show More
Related Content
More details
DOI :
10.1071/SR01029
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
Conference paper
;
.
Language:
English
Editors' remarks:
ID:
30775
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:57
Scientific Publication
Wetting rate, sodicity, and soil texture effects on infiltration rate and runoff
39

Mamedov, A.I., Inst. of Soil, Water and Envtl. Sci., Agricultural Res. Organization (ARO), Volcani Center, PO Box 6, Bet-Dagan 50-250, Israel
Levy, G.J., Inst. of Soil, Water and Envtl. Sci., Agricultural Res. Organization (ARO), Volcani Center, PO Box 6, Bet-Dagan 50-250, Israel
Shainberg, I., Inst. of Soil, Water and Envtl. Sci., Agricultural Res. Organization (ARO), Volcani Center, PO Box 6, Bet-Dagan 50-250, Israel
Letey, J.

Wetting rate, sodicity, and soil texture effects on infiltration rate and runoff
Surface sealing is determined by aggregate disintegration and clay dispersion, which in turn depend on aggregate wetting rate, and soil sodicity and texture. We hypothesised that soil susceptibility to seal formation increases when the aggregate wetting rate (WR) is increased, and that the effect of WR depends on soil texture and soil sodicity. The objective of this study was to investigate the effects of WR on seal formation, by observing infiltration rate (IR) and runoff, in cultivated soils varying in clay content and exchangeable sodium percent (ESP). Effects of 3 wetting rates (2, 8, and 64 mm/h) on IR and runoff from 6 Israeli soils exposed to 60 mm of simulated rain of deionised water were studied in the laboratory. The soils ranged in clay from 8.8 to 68.3% and ESP levels from 0.9 to 20.4. Effects of WR on soil infiltration rate and runoff depended on soil texture and soil ESP In soils with low clay content (8.8%), the effect of WR on seal formation was negligible, whereas effect of ESP was significant. Conversely, in clay soils (>52.1%), WR had a predominant effect on 1R and runoff, while the effect of ESP was notable yet secondary to that of WR. The soils with intermediate clay content (22.5-40.2% clay) were the soils most susceptible to seal formation, with WR and ESP having moderate effects on seal formation. Effects of WR on aggregate disintegration and seal formation increased with increasing clay content and aggregate stability. Conversely, the role of ESP in determining sealing decreased with an increase in clay content and in WR.
Scientific Publication
You may also be interested in