Application of Polyacrylamide on Controlling Soil Freeze-Thaw Cycle Effect on Runoff Generation and Soil Loss

The present study aimed to investigate the effects of polyacrylamide (PAM) on runoff volume (R) and soil loss (SL) subjected to freeze-thaw (FT) cycle from small experimental plots induced under rainfall simulation condition. A completely randomized design with FT cycle and none use of PAM as control were used to compare the effect of application of different rates of PAM (0.25, 0.5 and 0.75 g.m-2) on runoff generation time (TR), R and SL. The ANOVA results showed that the PAM had significant increasing effect on TR. Application rates of 0.25 and 0.50 g.m-2 decreased R and SL at tune of 49, 23 and 77 and 52, respectively, compared to those recorded for the control plot. In contrast, R and SL increased 1.62 and 4.5 times subjected to 0.75 g.m-2 application rate. It was also understood from the results that the PAM with the particle flocculation capability and increasing penetration rate could control the effects of FT cycle, with further effect on SL. Whereas, the PAM treatment of 0.75 g.m-2 had increasing effect on runoff yield and soil loss.The present study aimed to investigate the effects of polyacrylamide (PAM) on runoff volume (R) and soil loss (SL) subjected to freeze-thaw (FT) cycle from small experimental plots induced under rainfall simulation condition. A completely randomized design with FT cycle and none use of PAM as control were used to compare the effect of application of different rates of PAM (0.25, 0.5 and 0.75 g.m-2) on runoff generation time (TR), R and SL. The ANOVA results showed that the PAM had significant increasing effect on TR. Application rates of 0.25 and 0.50 g.m-2 decreased R and SL at tune of 49, 23 and 77 and 52, respectively, compared to those recorded for the control plot. In contrast, R and SL increased 1.62 and 4.5 times subjected to 0.75 g.m-2 application rate. It was also understood from the results that the PAM with the particle flocculation capability and increasing penetration rate could control the effects of FT cycle, with further effect on SL. Whereas, the PAM treatment of 0.75 g.m-2 had increasing effect on runoff yield and soil loss.The present study aimed to investigate the effects of polyacrylamide (PAM) on runoff volume (R) and soil loss (SL) subjected to freeze-thaw (FT) cycle from small experimental plots induced under rainfall simulation condition. A completely randomized design with FT cycle and none use of PAM as control were used to compare the effect of application of different rates of PAM (0.25, 0.5 and 0.75 g.m-2) on runoff generation time (TR), R and SL. The ANOVA results showed that the PAM had significant increasing effect on TR. Application rates of 0.25 and 0.50 g.m-2 decreased R and SL at tune of 49, 23 and 77 and 52, respectively, compared to those recorded for the control plot. In contrast, R and SL increased 1.62 and 4.5 times subjected to 0.75 g.m-2 application rate. It was also understood from the results that the PAM with the particle flocculation capability and increasing penetration rate could control the effects of FT cycle, with further effect on SL. Whereas, the PAM treatment of 0.75 g.m-2 had increasing effect on runoff yield and soil loss.The present study aimed to investigate the effects of polyacrylamide (PAM) on runoff volume (R) and soil loss (SL) subjected to freeze-thaw (FT) cycle from small experimental plots induced under rainfall simulation condition. A completely randomized design with FT cycle and none use of PAM as control were used to compare the effect of application of different rates of PAM (0.25, 0.5 and 0.75 g.m-2) on runoff generation time (TR), R and SL. The ANOVA results showed that the PAM had significant increasing effect on TR. Application rates of 0.25 and 0.50 g.m-2 decreased R and SL at tune of 49, 23 and 77 and 52, respectively, compared to those recorded for the control plot. In contrast, R and SL increased 1.62 and 4.5 times subjected to 0.75 g.m-2 application rate. It was also understood from the results that the PAM with the particle flocculation capability and increasing penetration rate could control the effects of FT cycle, with further effect on SL. Whereas, the PAM treatment of 0.75 g.m-2 had increasing effect on runoff yield and soil loss.