2.2. Amount of irrigation water (AIW)
The corn plants were irrigated 2 days intervals by different amounts of water,
AIW were determined as a percentage of the crop evapotranspiration (ETc) representing one of the following
three treatments: I100 = 100%, I85 = 85% and I70 = 70% of ETc.
The daily ETo was computed according to the equation (1) (Allen
et al., 1998) as follows: