Scheduling irrigation using an automatic weather station: II field experiment

Abstract

An irrigation scheduling experiment was conducted on wheat crop using climatic data collected continuously from an automatic weatlrer station previously installed and tested at the site. Irrigation scheduling was based on the estimation of evapotranspiration using modified Penman and Jensen Haise methods. Irrigation was started when the readily available water was depleted. The result of this experi-ment indicated that Penman method was more realistic than Jensen Haise method in estimating the actual crop water need. The use of automatic water station for scheduling have demonstrated that, not only water could be saved but crop yield could also be increased.