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ARS Home » Pacific West Area » Kimberly, Idaho » Northwest Irrigation and Soils Research » Research » Publications at this Location » Publication #58301
Title: SWAGMAN WHATIF VERSION 1.5 SOFTWARE (COPYRIGHT CSIRO 1994)

Author
item MEYER, W - 5368-20-00
item Robbins, Charles
item PRATHAPAR, S - 5368-20-00

Submitted to: CSIRO Australia Griffith NSW
Publication Type: Other
Publication Acceptance Date: 4/1/1995
Publication Date: N/A
Citation: N/A

Interpretive Summary: An interactive computer program was developed to simulate the interactions among soil salinity, crop salt tolerances, soil physical properties, irrigation water quality, irrigation management, water table depth and quality, climatic factors, and crop yield. 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, surface runoff, water table rise or fall, and the relative yield reductions due to over irrigation, under irrigation, and salinity, 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. An IBM compatible computer with a math coprocessor will execute the program in 6 to 10 seconds. This is an educational tool designed to teach the concepts of salinity and irrigation management and IS NOT an irrigation scheduling program or a management tool.

Technical Abstract: An interactive computer program was developed to simulate the interactions among soil salinity, crop salt tolerances, soil physical properties, irrigation water quality, irrigation management, water table depth and quality, climatic factors, and crop yield. 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, surface runoff, water table rise or fall, and the relative yield reductions due to over irrigation, under irrigation, and salinity, 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. An IBM compatible computer with a math coprocessor will execute the program in 6 to 10 seconds. This is an educational tool designed to teach the concepts of salinity and irrigation management and IS NOT an irrigation scheduling program or a management tool.