Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Salinity Above a Water Table as Affected by Rainfall and Irrigation.
Author Horto, Maurice L. ;
CORP Author South Dakota State Univ., Brookings. Water Resources Inst.
Year Published 1972
Report Number DI-14-01-0001-1547; OWRR-B-004-SDAK; 01388,; B-004-SDAK(1)
Stock Number PB-212 931
Additional Subjects ( Ground water ; Salinity) ; ( Irrigation ; Salinity) ; Salinity ; Leaching ; Rainfall ; Lysimeters ; Soil analysis ; Water loss ; Diffusion ; Water table ; Tables(Data) ;
Library Call Number Additional Info Location Last
NTIS  PB-212 931 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 38p
The proximity of a water table to the soil surface supplies water for evaporation and indirectly, controls the rate at which salt can accumulate at the surface. A water table was established at two depths, 60 cm. and 120 cm., in lysimeters made with undisturbed cores of Biotia silt loam. The water table level in the lysimeters was automatically controlled, evaporation rate was measured, and changes in soil salinity were determined. A cover kept rainfall off the lysimeters and permitted study of salt distribution under separate evaporation and leaching conditions. During the study, lysimeters with a water table of 60 cm. evaporated approximately twice as much water as the lysimeters with a water table at 120 cm. Salt accumulation increased with increasing amount of water evaporated. The level of salinity reached in most lysimeters in the surface soil layer would have seriously decreased seed germination and growth of many plants of agricultural significance. (Author)