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פותח על ידי קלירמאש פתרונות בע"מ -
Polymer effect on infiltration and erosion of sodic soils
Year:
1992
Authors :
בן-חור, מני
;
.
לוין, י'
;
.
Volume :
9
Co-Authors:
Gal, M., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Stern, R., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Levin, J., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Ben-Hur, M., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Facilitators :
From page:
108
To page:
112
(
Total pages:
5
)
Abstract:
Runoff from irrigated sodic soils is a common phenomenon in arid and semi-arid climates. The effect of a low-charge polysaccharide (LCCP) on infiltration rate (IR) and runoff on two red apedal soils was studied using an irrigation simulator. One was a structurally stable soil from Cedara In Natal and the other, from Irene in the Transvaal, was of a much lower stability. Application of the local tap water (TW) of EC 0.4 dS m−1 represented the control treatment. The polymer was applied in suspension to this water, the soil dried for 72 h, and then TW applied. The polymer treatment maintained a higher IR and lower soil loss than TW treatments for the two soils and various ESP levels. For both soils, the greatest effect of the polymer was obtained at the lowest ESP. However, the residual effect of the polymer on IR and soil loss during the second application of TW was not meaningful. Higher IRs due to polymer application always resulted in lower soil losses. An exponential regression between soil loss and the final IR was obtained. Inasmuch as sodic soils tend to produce high runoff during irrigation, the application of LCCP through the irrigation system could be considered. © 1992 Taylor & Francis Group, LLC.
Note:
Related Files :
Aggregate stability
Crusting
dispersion
exchangeable Na
Irrigation water quality
runoff
soil erosion
עוד תגיות
תוכן קשור
More details
DOI :
10.1080/02571862.1992.10634612
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32348
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:09
Scientific Publication
Polymer effect on infiltration and erosion of sodic soils
9
Gal, M., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Stern, R., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Levin, J., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Ben-Hur, M., Soil and Irrigation Research Institute, Private Bag X79, Pretoria, 0001, South Africa
Polymer effect on infiltration and erosion of sodic soils
Runoff from irrigated sodic soils is a common phenomenon in arid and semi-arid climates. The effect of a low-charge polysaccharide (LCCP) on infiltration rate (IR) and runoff on two red apedal soils was studied using an irrigation simulator. One was a structurally stable soil from Cedara In Natal and the other, from Irene in the Transvaal, was of a much lower stability. Application of the local tap water (TW) of EC 0.4 dS m−1 represented the control treatment. The polymer was applied in suspension to this water, the soil dried for 72 h, and then TW applied. The polymer treatment maintained a higher IR and lower soil loss than TW treatments for the two soils and various ESP levels. For both soils, the greatest effect of the polymer was obtained at the lowest ESP. However, the residual effect of the polymer on IR and soil loss during the second application of TW was not meaningful. Higher IRs due to polymer application always resulted in lower soil losses. An exponential regression between soil loss and the final IR was obtained. Inasmuch as sodic soils tend to produce high runoff during irrigation, the application of LCCP through the irrigation system could be considered. © 1992 Taylor & Francis Group, LLC.
Scientific Publication
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