Manuscript Title:

EFFECT OF SOME SOIL STABILIZERS AGAINST WATER EROSION UNDER RAINFED CONDITIONS

Author:

OMNIA MOHAMED WASSIF

DOI Number:

DOI:10.5281/zenodo.11064917

Published : 2024-04-23

About the author(s)

1. OMNIA MOHAMED WASSIF - Soil Erosion Unit, Soil and Water Conservation Department, Desert Research Center, Cairo, Egypt.

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Abstract

The experiments were carried out under rainfall simulator DRC lab conditions and field conditions in the North Western Coastal Zone (NWCZ). The aim of this study evaluate the susceptibility of Guar Gum and Polyvinyl acetate (PVAc) stabilizers by two application methods (spray and mixed application method) to mitigate water erosion hazards as one of the risks of climate change. At the same time, how to sustainably enhance sandy soil properties without environmental side effects. The best treatments under lab conditions were C, D, F, G, I, J, L, and M. The optimal stabilizer concentrations were 1% and 0.5% Guar Gum (C, D, I, and J) for both application methods. Otherwise, the infiltration rate decreased with increased concentration of two types of stabilizers. Its reduction percentage reached about 24%, 28%, 32%, and 39% for I, J, L and M treatments, respectively. The results of the evaporating rate Ee% decreased with increased time to 96 hr for D and J. Furthermore, Guar Gum has a stronger effect on increasing MWD than PVAc for the two application methods. On the other hand, the field experiment results showed a non-significant increase in I and J plant vegetation than C and D. Therefore, the best reduction treatment for the ER was arranged in order D< J < C < I. From an economic point of view, the best treatments were C and I treatments. Overall, the 0.5% stabilizer concentration gave a sufficient concentration for mitigating water erosion hazards and increased crop yield with a higher net profit, particularly for Guar Gum, than PVAc.


Keywords

Guar Gum, Poly Polyvinyl Acetate, Rainfall Simulator, Runoff, Soil Loss, Water Erosion.