Abstract
Abstract
A computerized model with (Microsoft QuickBasic version 1.1) was proposed
for simulating the effect of deficit irrigation for maize crop during spring and autumn
seasons in Mosul region. The simulation is based on 16 years of climatological data
for the period ( 1985-2000 ) for Mosul meteorological station , which includes daily
maximum and minimum temperatures , maximum and minimum relative humidity ,
wind speed at 2m height , and sunshine hours , which is used to calculate daily
reference evapotranspiration with Penman-Monteith equation .The model predicts
yield reduction by changing irrigation depth for three different irrigation methods
(sprinkler , furrow and drip) .The rainfall is divided into three classes which represent
three regions (wet ,semi- arid and arid )
