Computer Model for Predicting the Impact of Irrigating with Saline Water on Soils and Runoff Water in Missouri

摘要

A study was undertaken to determine the potential impact of irrigating acid, loess derived soils with high salt/high sodium waters. The study was partly motivated by increasing practice of supplemental irrigation on soils overlying marginal quality ground water aquifers and having moderately low available water holding capacities. A rudimentary data base, consisting of well water quality data (U.S. Geological Survey) and a period of record of solar radiation, precipitation and air temperature (SOLMET) was accessed and used to initiate a modeling effort. Hydraulic properties of remolded loess derived soil materials were studied as functions of clay content. Saturated conductivity (falling head) decreased with increasing clay content and with increasing bulk density.