The program performs computations based onĪnalytical solutions of the relevant linearized water flow and uptake problems. While at the same time maintaining accuracy, robustness and relevance. Leaks with no water uptake by plant roots.ĭIDAS is designed to be user-friendly and to use a minimal number of readily available and intuitive parameters, DIDAS also allows setting scenarios with just point or line water sources, whichĪre relevant to other agronomic and environmental practices and to processes involving water application and Patterns of soil water potential enable methodological studies of the roles of gravity and capillarity inĭriving the soil water, and of the effects of soil, plant and atmospheric evaporative demand on water flowĪnd uptake by plant roots. Sources and subsurface sinks, and utilizing the graphical outputs of the spatial distributions and temporal Setting scenarios of coupled, on-surface or subsurface water Of various boundary (engineering and environmental) conditions on the processes of 2D and 3D water flowĪnd uptake in variably saturated soils. Researchers, lecturers and students can use DIDAS as a research or training tool for studying the effects When applying supplemental irrigation, i.e., it refers only to regular irrigation schedules. DIDAS cannot be used to assess plant water-use efficiency in rainfed crop production or DIDAS evaluates the effects of irrigation frequency,ĭaily hours of water application and irrigation-pulse duration on water-use efficiencyįor a given scenario of: drip system design, soil properties, root system size and depth, and atmosphericĮvaporative demand. Irrigation and multiple daily irrigation pulses. "Scheduling" refers to, and assists in optimizing drip-irrigation schedules for both 'every-few-days' Irrigation with parallel line sources on a flat soil surface. Its three modules can also assist in understanding and assessing furrow irrigation, for example, by simulating DIDAS only refers directly to drip irrigation. (soil properties and atmospheric evaporative demand). Lines and between drip lines, the depth of subsurface emitters, and the size and depth of root systems.ĭIDAS assesses the effects of these attributes on the plant's water-use efficiency under various environmental conditions These include: distances between emitters along drip "Design" does not refer to the hydraulics of the irrigation system (pumps, valves, filters, pipe diameters, and the like),īut to the geometrical attributes of the drip-irrigation system. Schedules and for developing new, water-use-efficient designs and schedules. The program can serve as both a benchmarking tool for assessing and comparing existing system designs and irrigation Irrigators of annual and perennial crops can use DIDAS as a decision-support tool for assistance in selecting optimalĭesigns of drip-irrigation systems and optimal irrigation schedules, where water is a key limiting factor in crop production. Lecturers and students interested in the processes of two and three-dimensional water flow and uptake in soils. Working for irrigation companies, extension services and growers' associations. Potential users include private growers and irrigators Irrigation-system design and for preliminary evaluation of scheduling scenarios.Īn irrigation-scheduling optimization tool, based on the actual water application scheduleĪnd on the diurnal pattern of the plant-atmosphere resistance to water uptake.ĭIDAS is intended for both practitioners and scholars. Of plant-atmosphere resistance to water uptake and evaporation, serving for fine-tuning of the The effect of geometrical attributes on water-use efficiency.Ī diurnal pattern module, based on steady irrigation and accounting for the diurnal patterns DIDAS is comprised of three modules:Ī drip-system design tool based on steady irrigation and water-uptake processes to assess It evaluates plant water-use efficiency, but not plant growth or yield. The program simulates drip irrigation of various annual crops and trees in various soils under different conditions of evaporation.
FREE IRRIGATION SYSTEM DESIGN SOFTWARE SOFTWARE
The output window of the temporal pattern of the water potential, depicts the evaluated diurnal pattern of the water potential, here in terms of the matric head, for the last simulated day (/irrigation cycle) at the locations specified in the vertical plane window.ĭIDAS is a software package aimed at assisting irrigators in the design of drip-irrigation systems and in irrigation scheduling.