Study of the Effect of Drainage and the Distance Between Drippers on Soil Construction

Abstract

A field experiment was conducted in Al-Rifai District - Dhi Qar Governorate during the spring season 2022 on soil with a clay texture, for the purpose of studying three water discharges, which included (4, 12 and 20) liters per hour -1. Overlapping with the distance factor between drippers, represented by (20 and 40) cm. The yellow corn crop (Zea mays L.) (Buhuth 106) was used as a growth indicator. The dripper drainage of 12 liters per hour-1 showed an improvement in the physical properties of the soil at the end of the experiment compared to the values of these characteristics before planting, as it led to a decrease in the bulk density values and an increase in both the values of the weighted diameter average and the total porosity compared with other drainages (4, 20) liters Hour-1, as the results showed that the use of the distance between the drippers of 20 cm preserved the soil structure as a result of the increase in the average weighted diameter and the total porosity as well as the reduction of the bulk density values compared to the distance between the drippers (40) cm.