Estimating potential evapotranspiration.

Abstract

Increasing population and needs for an augmented food supply give greater importance to improved procedures for estimating agricultural water requirements both for irrigation and for rain- fed agriculture. Four methods for estimating potential evapotranspiration are compared and evaluated. These are the Class A evaporation pan located in an irrigated pasture area, the Hargreaves equation, the Jensen-Haise equation, and the Blaney-Criddle method. -from ASCE Publications Abstracts Dept of Agric & Irrig Eng, Utah State Univ, Logan, UT 84322, USA.