Development And Field Verification Of A Microcomputer Irrigation Scheduling Model

Abstract

A simulation mode! WATERMAN for irrigation scheduling and water management, has been developed in FORTRAN-77. The simulation is based on the daily computations of root-zone water balance by considering the root-zone as a multilayered system. The model was validated using the soil, crop and climate data of the Lower Assam region. Later the same was applied for on farm scheduling of irrigation and water management in six different crops grown in the lower Assam region such as wheat, rice (kharif and rabi), mustard, potato, jute and tea. The results from the simulation of the crop root-zone soil moisture content on daily basis for year 1988-89 agroclimatologic data record have been found to be in good agreement with the field observations. With three strategies for decision making for irrigation scheduling the user has got varied choice to make based on the data availability.