Variations of Runoff Generation during Rainfall Event when Different Levels of Polyacrylamide in Its Powder vs Liquid form Applied

A study of the temporal variations in runoff generation is one of the important in water and soil conservation when either under natural conditions or accompanied by application of soil amendments. However, runoff generation variations along with application different types of soil amendments has less been considered. Therefore, the current study was planned to investigate such states of runoff generation's temporal variations as observed on a clay-loamy soil. To follow the purpose, the effects of different levels of Polyacrylamide (0.4, 2, and 6 g m-2) on runoff generation in the presence of flour vs liquid types were carried out on 0.25 m2-small plots and as well in lab conditions. Rainfall simulation was performed with two intensities of 50 and 80 mm h-1 for 17 and 8 minutes, respectively, compatible with the dominant conditions of the area, and after 48 hours past from Polyacrylamide application. Results obtained from general linear model verified non-significant effect (P0.2), whereas it was found significant for the 2 and 6 g m-2 treatments (p