Water Conservation through I rrigation scheduling

Abstract

A field experiment was carried aut on wheat crop at the pr-o i ec t site of Hail Development Company (HADCD), about 500 km North West of Riyadh, Kingdom of Saudi Arabia. Few' center pivot c t r-c Lea (each 54 h e in er-ee) were used In the study. A model based on the t10dified Penman Method (FAD ve r-e i on ) was developed and used for t r-r-Lq e t r cn scheduling. The required micro-climatic parameters were continuously monitored by an automatic weather station installed at the site and b r-en sm i tted to a computer for p r-oce s s t nq and analyses. The results of the e xp er-Lrnen t indicated that an appreciable amount of water' (25 I.) IS saved, and the yield is Lnc r-ee aed significantly by ua r nq this technique of scheduling. In addition, the conservation of we t er- r-essu Lt e in r-educ i nq the wed<ing hours of the equipment and labour'