Abstract
By the using the Warrick’s analytical solution with one dimensional water extraction, iso-matric potential ditributions were estimated under the steady state conditions of two dimensional moisture flow. The results estimated were compared with the experimented ones measured at the fields cultivated with sugercanes and cucumbers in the south-west Islands of Japan which showed the climate characteristics of frequent rainfall. As a result, in order to estimate the outlines of the wetted areas as the dimensions designed for the irrigation schedules and systems of the drip methods, it is recommended that the analytical solutions are applied to the limited field conditions, of which the crop cultivation are carried out in the periods of a few rainfall.
