Effects of applications of synthetic polymer and humic acid on resistance to dispersion and mechanical forces

Authors : Nutullah ÖZDEMİR

Pages : 54-61

Doi:10.21657/soilst.1329053

View : 37 | Download : 39

Publication Date : 2023-07-18

Article Type : Research Paper

Abstract :In this study, the effects of the addition of polyvinyl alcohol insert ignore into journalissuearticles values(PVA);, polyacrylamide insert ignore into journalissuearticles values(PAM);, and humic acid insert ignore into journalissuearticles values(HA); to soils in sandy loam, loam, and clay texture classes on their resistance to dispersion and mechanical forces were examined. The study was performed under greenhouse conditions using surface soil samples and 1.5 kg pots. Furthermore, the study was planned as an incubation experiment and the application of PVA, PAM, and HA at 500, 100, and 500 ppm doses for each soil texture class, respectively. During the incubation times insert ignore into journalissuearticles values(1 insert ignore into journalissuearticles values(0);, 2 insert ignore into journalissuearticles values(15);, 3 insert ignore into journalissuearticles values(30); 30, and 4 insert ignore into journalissuearticles values(45); days);, the irrigation process was repeated as half of the available moisture in the soil was depleted. Ultimately, the applications of PVA, PAM, and HA on soils in sandy loam, loam, and clay textures increased the liquid limit/ pF\`2 moisture ratio insert ignore into journalissuearticles values(LL/pF\`2); values in them by 6.30%, 5.99%, and 7.30%, respectively, insert ignore into journalissuearticles values(reducing the tendency to dispersion); compared to the control. Furthermore, the applications increased the plastic limit/pF’2 moisture ratio insert ignore into journalissuearticles values(PL/pF’2); values insert ignore into journalissuearticles values(resistance to mechanical forces); by 22.31%, 16.50%, and 9.27%, respectively. Incubation time 1 was more effective in reducing dispersion and increasing resistance to mechanical forces, and the effects decreased over time. PVA was the most effective conditioner for all three soil groups.
Keywords : Soil texture, Dispersion, Resistance to mechanical forces, Polymer, Humic acid