Soil salinity as affected by high-sulfate water

Journal Article · Fri Nov 01 04:00:00 EST 1985 · Soil Sci.; (United States)

DOI:https://doi.org/10.1097/00010694-198511000-00009· OSTI ID:6236735

Papadopoulos, I

In a laboratory experiment, the author investigated both salt buildup in three soils irrigated with various amounts of water high in sulfates and also the good-quality water needed for reclaiming such soils. Salt buildup followed in two distinct stages. The first stage was marked by a sharp increase in soil salinity as ions of both high and low solubility contributed to it. Salt buildup in the second stage was substantially slower and linearly related to the concentration of highly soluble ions. The SAR measured in soils taken from the pots at the end of salinization increased with every volume of sulfate water applied. There was initially also an increase in saturated hydraulic conductivity, followed thereafter by a sharp decrease. As with salt buildup the rate of leaching of salts followed two stages. First soluble salts were readily leached. Sharp decrease of both soil solution EC and SAR occurred at this stage. Thereafter, a steady state was reached, and decrease in soil solution EC was gradual and strongly dependent on gypsum dissolution.

• Research Organization: Agricultural Research Institute, Nicosia, Cyprus
• OSTI ID: 6236735
• Journal Information: Soil Sci.; (United States), Journal Name: Soil Sci.; (United States) Vol. 140:5; ISSN SOSCA
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
CALCIUM
CALCIUM COMPOUNDS
CALCIUM SULFATES
CHLORINE
DATA
DISSOLUTION
ELEMENTS
EXPERIMENTAL DATA
GYPSUM
HALOGENS
INFORMATION
IRRIGATION
LEACHING
MAGNESIUM
METALS
MINERALS
NONMETALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PRECIPITATION
SALINITY
SEPARATION PROCESSES
SODIUM
SOILS
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS