Irrigation with treated wastewater under two different irrigation methods: Effects on hydraulic conductivity of a clay soil

Geoderma ◽  
2007 ◽  
Vol 140 (1-2) ◽  
pp. 199-206 ◽  
Author(s):  
A.K. Bhardwaj ◽  
D. Goldstein ◽  
A. Azenkot ◽  
G.J. Levy
Keyword(s):  
Hydraulic Conductivity ◽  
Clay Soil ◽  
Treated Wastewater ◽  
Irrigation Methods

scholarly journals Treated wastewater irrigation effects on soil hydraulic conductivity and aggregate stability of loamy soils in Israel

2015 ◽  
Vol 63 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Karsten Schacht ◽  
Bernd Marschner
Keyword(s):  
Hydraulic Conductivity ◽  
Chemical Properties ◽  
Aggregate Stability ◽  
Treated Wastewater ◽  
Soil Aggregate Stability ◽  
Irrigation Effects ◽  
Physical And Chemical ◽  
The Impact

Abstract The use of treated wastewater (TWW) for agricultural irrigation becomes increasingly important in water stressed regions like the Middle East for substituting fresh water (FW) resources. Due to elevated salt concentrations and organic compounds in TWW this practice has potential adverse effects on soil quality, such as the reduction of hydraulic conductivity (HC) and soil aggregate stability (SAS). To assess the impact of TWW irrigation in comparison to FW irrigation on HC, in-situ infiltration measurements using mini disk infiltrometer were deployed in four different long-term experimental orchard test sites in Israel. Topsoil samples (0-10 cm) were collected for analyzing SAS and determination of selected soil chemical and physical characteristics. The mean HC values decreased at all TWW sites by 42.9% up to 50.8% compared to FW sites. The SAS was 11.3% to 32.4% lower at all TWW sites. Soil electrical conductivity (EC) and exchangeable sodium percentage (ESP) were generally higher at TWW sites. These results indicate the use of TWW for irrigation is a viable, but potentially deleterious option, as it influences soil physical and chemical properties.

Phytotoxic Effects of Treated Wastewater Used for Agricultural Irrigation On Root Hydraulic Conductivity and Plant Growth

2021 ◽  
Author(s):  
Sare Asli ◽  
Nedal Massalha ◽  
Muhamad Hugerat
Keyword(s):  
Cell Wall ◽  
Hydraulic Conductivity ◽  
Plant Growth ◽  
Root Elongation ◽  
Dry Weight ◽  
Cell Permeability ◽  
Treated Wastewater ◽  
Pressurized Water ◽  
Pore Sizes ◽  
Physical Effects

Abstract AimsTo determine the effects of treated wastewater (TWW) and dialyzed TWW (DTWW) through dialysis tube with a cut-off at 6000-8000 Da, on the water transport characteristics of maize seedlings (Zea mays L). MethodsLaboratory experiments were conducted to determine the effect of TWW on the hydraulic conductivity of excised roots. Moreover, the effect on transpiration, plant growth, root cell permeability and on the plant fresh and dry weight was determined. ResultsPressurized water flow through the excised primary roots was reduced by 25%-52%, within 90 min of exposure to TWW or DTWW. In hydroponics, DTWW affected root elongation severely by 58 %, while cell-wall pore sizes of same roots were little reduced (by 6%). Additionally, the exposure to TWW or DTWW caused inhibition of both leaf growth rate by (26%-70%) and transpiration by (14%-64%). While in soil growth, the plant fresh and dry weight was also significantly affected but not with secondary DTWW. Conclusions These impacts appeared simultaneously to involve phytotoxic and physical clogging impacts. First, the inhibition in hydraulic conductivity through live roots (phytotoxic and physical effects) after exposure to secondary DTWW was by 22%, while through killed roots accepted after hot alcohol disruption of cell membranes (physical effects only); was only by 14%. Second, although DTWW affected root elongation severely by 58%, cell-wall pore sizes of same roots were little reduced by 6%. We conclude that large molecules, such as polypeptides, remained after the dialysis process, may have produced hormone-like activity that affected root water permeability.

MEASURING HYDRAULIC CONDUCTIVITY IN A CRACKING CLAY SOIL USING THE GUELPH PERMEAMETER

1999 ◽  
Vol 42 (4) ◽  
pp. 957-964 ◽  
Author(s):  
V. Bagarello ◽  
M. Iovino ◽  
W. D. Reynolds
Keyword(s):  
Hydraulic Conductivity ◽  
Clay Soil ◽  
Guelph Permeameter

scholarly journals Reductions in root hydraulic conductivity in response to clay soil and treated waste water are related to PIPs down-regulation in Citrus

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Indira Paudel ◽  
Shabtai Cohen ◽  
Lyudmila Shlizerman ◽  
Amit K. Jaiswal ◽  
Avi Shaviv ◽  
...  
Keyword(s):  
Waste Water ◽  
Hydraulic Conductivity ◽  
Clay Soil ◽  
Down Regulation ◽  
Root Hydraulic Conductivity

COMPACTION EFFECTS ON THE HYDRAULIC CONDUCTIVITY OF A CLAY SOIL

Soil Science ◽  
1978 ◽  
Vol 125 (5) ◽  
pp. 278-282 ◽  
Author(s):  
ESTHER DOUGLAS ◽  
EDWARD McKYES
Keyword(s):  
Hydraulic Conductivity ◽  
Clay Soil

Physical changes in seedbed material resulting from the application of dissolved gypsum

Soil Research ◽  
1966 ◽  
Vol 4 (1) ◽  
pp. 69 ◽  
Author(s):  
DR Scotter ◽  
J Loveday
Keyword(s):  
Hydraulic Conductivity ◽  
Water Retention ◽  
Clay Soil ◽  
Physical Changes

The effect of an initial irrigation of gypsum solution, as compared with water, on water retention and transmission in a seedbed loam and clay and the subsequent changes in porosity during drying have been studied. A marked increase in hydraulic conductivity, particularly in the clay soil, and concomitant increases in total and air-filled porosity at all matric potentials, from near saturation to oven dry, were measured. The data provide an explanation of the earlier observation that improved emergence resulting from gypsum treatment was associated with the maintenance of higher matric potentials in the surface 4 in. of soil for longer periods after irrigation.

A plot-scale uncertainty analysis of saturated hydraulic conductivity of a clay soil

2020 ◽  
pp. 125694
Author(s):  
Vincenzo Bagarello ◽  
Emanuele Barca ◽  
Mirko Castellini ◽  
Massimo Iovino ◽  
Renato Morbidelli ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Uncertainty Analysis ◽  
Clay Soil ◽  
Saturated Hydraulic Conductivity ◽  
Scale Uncertainty

scholarly journals Use of Molasses and Distillery Slops with Sulfur for the Reclamation of a Saline-Sodic and a Sodic Soil from Puerto Rico

1969 ◽  
Vol 51 (1) ◽  
pp. 55-65
Author(s):  
Raúl Pérez Escolar
Keyword(s):  
Puerto Rico ◽  
Hydraulic Conductivity ◽  
Clay Soil ◽  
Crop Yields ◽  
Water Movement ◽  
Soil Column ◽  
Exchangeable Sodium ◽  
Sodic Soil ◽  
Corn Crop ◽  
Ca Ions

Data are presented on the effects of the use of molasses and distillery slops in conjunction with sulfur for the reclamation of a saline-sodic and a sodic soil from southwestern Puerto Rico. Results show that, in a sodic Guánica clay soil, corn yields were higher under the molasses treatment in the first corn crop, sulfur-slops and sulfur molasses in the second corn crop, and molasses, sulfur-slops, and sulfur molasses in the third crop, namely, snapbeans. Hydraulic conductivity values were markedly increased in the sulfur-slops and sulfur molasses treatments and removal of harmful exchangeable sodium was possible throughout the three crops. This was probably because of better water movement and the fact that more Ca ions were brought into circulation to displace adsorbed sodium. The experiments conducted on the saline-sodic Fe (Faith) clay soil followed about the same pattern of crop yields, hydraulic conductivity, and removal of exchangeable sodium of the Guánica clay soil. On the check plots, however, replacement of adsorbed sodium was rather pronounced for several possible reasons. These are: The soil had excess soluble salts which, for some time at least, maintained the colloids in a flocculated state. The soil column was rather short, 6 inches, and the hydrolysis of fertilizer salts must have brought into circulation Ca ions in an amount such as to replace considerable adsorbed sodium. Since Thiobacillus thiooxidans derives its energy from the oxidation of sulfur alone it is believed that the enhanced oxidation of sulfur must have been caused by created aeration and somewhat acid conditions which favored the bacteria.

Sign in / Sign up

Export Citation Format

Share Document