A global analysis of irrigation scheme water supplies in relation to requirements

The performance of irrigation schemes around the world has been below expectations. assessment is an essential step towards improving agricultural water use. One primary indicators relative supply (RIS, ratio between amount delivered and crop net requirements). This study presents a worldwide analysis scheme by evaluating key attributes that influence RIS. was based on review reports scientific papers yielded 264 cases belonging to 25 countries in six regions. database subjected two types statistical analysis: k-means clustering covariance (ANCOVA). cluster grouped which were characterized low RIS advanced technology. ANCOVA showed co-varied significantly with variation precipitation, delivery schedule, on-farm systems, distribution network, region, but not crop. also modern pressurized systems on-demand improve general linear model had good capacity predict coefficient determination R2 = 0.83.