Effect some of hydraulic and design parameters of border drip irrigation system and some soil conditioners on irrigation efficiencies

Abstract

A field experiment was conducted in Missan governorate in the areas of the Al- Asher Makaon adjacent to the basin of the Tigris River. The experiment was carried out in winter season of 2018-2017. The experimental treatment of three lateral pipes spacing at 30 cm (S1), 45 cm (S2) and 60 cm (S3) with three locations L1, L2 and L3 from border. The treatments were applied by using C.R.D design . the results showed effect on irrigation efficiencies such as addition efficiency, distribution efficiency, and water storage efficiency. The factorial coefficients of the experiment were distributed by applying a factorial experiment using the randomized complete block design R.C.B.D. The results showed that there is a highly significant effect of the factor of the distance between the field pipelines, the addition of soil conditioners and the difference in the level of irrigation water in the values of irrigation efficiencies, as the values of water addition efficiency (AE%) and water distribution efficiency values (%Ed) increase with the decrease in the distance between field pipes and the addition of soil conditioners. Reducing the irrigation level to 75% of the Ep values, while this effect is reflected in the water storage efficiency values (%ES), as it increases by increasing the distance between the field pipes, adding soil conditioners, and increasing the irrigation level to 100% of the Ep values.