Effect of dripper types and irrigation water quality on some soil properties

Abstract

    A field experiment was conducted in Texture Clay soil to study the effect of some different types of drippers and the alternation method using saline water on some physical properties of soil. The experiment was designed globally - Split Plot Design and with three replications, using river water and well water with electrical conductivity of 0.7 and 4.38 ds. m^-1, respectively. Water was added by four methods (R 100% river water, W 66% well and R 34% river, W 100% well, R 66% river and W 34% well) and three drippers T-Tape, GR and Spiral were used. (Zea mays, L) is a local variety and the irrigation schedule has been scheduled for the purpose of conducting irrigation operations when 60% of the prepared water is drained. It was found that there was an increase in the values ​​of bulk density and resistance to penetration and a decrease in the values ​​of water conductivity and average diameter as shown by the results, and this was at the end of the corn crop growing season and for all treatments compared to their values ​​before planting. It gave the highest values ​​of bulk density 2.05 and 1.96 Mg.m^-1 for Spiral and GR type, compared to 1.84 Mg.m^-1 for T-Tape. The results also showed that the water quality had a significant effect in increasing the values ​​of soil resistance to penetration and bulk density and decreasing the values ​​of saturated water conductivity and the average weighted diameter, where the highest values ​​of the average weighted diameter when adding river water reached 0.98, 0.75 and 0.50 mm compared to well water 0.47, 0.41 and 0.37 mm for T-Tape, GR, and Spiral, respectively. The addition of river water 66% and 34% of well water increased the values of saturated water conductivity and average weighted diameter and decreased the values of bulk density and soil resistance to penetration compared to the method of adding 66% of well water and 34% of river water. The saturated water conductivity values were 2.86, 2.69 and 2.36 cm. Hour^-1 when adding 66% river water and 34% well water compared to 2.5, 2.41 and 2.16 cm. Hour^-1 when adding 66% well water and 34% river water to the T-Tape, GR and Spiral drops, respectively.