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SWAGMAN-Whatif

    An interactive computer program was developed to simulate the interactions among the above factors. It shows how changing one factor impacts the outcome of the other factors for a single growing season. The user selects a climate, a crop, and soil characteristics from menu lists, and then sets the water table depth and quality, irrigation (river or well) water quality and then develops an irrigation schedule. On execution, the relative yield reductions due to over irrigation, under irrigation, and salinity, water table rise or fall and surface runoff are shown numerically for the growing season. Soil water content, soil salinity, water table depth changes and rain and irrigation events during the season are also shown graphically.

    PIVNOZ-PIPELOSS

      These two software programs have been developed to aid in the design and analysis of center pivot and traveling lateral sprinkler irrigation systems.

      WATSUIT

        Predicts the salinity, sodicity, and toxic-solute concentration of the soil-water within a simulated crop root zone resulting from the use of a particular irrigation water of given composition and at a specified leaching fraction. It can be used to evaluate the effect of a given salinity level (or solute concentration) on crop yield and of a given sodicity level on soil permeability.

        UNSATCHEM

          Simulates water, heat, carbon dioxide and solute movement in one-dimensional variably saturated media.

          SWMS-3D

            Simulates water and solute movement in three-dimensional variably saturated media.

            SWMS-2D

              Simulates water and solute movement in two-dimensional variably saturated media.

              STANMOD

                Computer Software for Evaluating Solute Transport in Porous Media Using Analytical Solutions of the Convection-Dispersion Equation.

                ROSETTA

                  Estimates water retention, saturated and unsaturated hydraulic conductivity from basic soil data (requires 32-bit Windows).

                  RETC

                    Analyzes the hydraulic properties of unsaturated soils.