Using Salinity Measurements for Predicting the Potential Runoffs of Suspended Solids from Louisiana Soils. (6375)
Authors:
T.K. Udeigwe* - Louisiana State University Agricultural Center J.J. Wang - Louisiana State University Agricultural Center H. Zhang - Oklahoma State University
Abstract:
Suspended solids runoff which is greatly influenced by the interplay of soil salinity and sodicity, leads to both land degradation and the impairment of water quality.
However, little has been done in predicting this risk. This study is aimed at
developing a model for predicting the runoff of suspended solids from agricultural fields using salinity information, and relating nutrients losses to electrical
conductivity. Five sites were selected for this study. Soil samples collected from each site were treated with salt solutions resembling the most common soil solution compositions to yield electrical conductivity (EC) range of 0.25-3.00 dS/m. The aim was to get soils of different EC values but with similar texture. The soils were subjected to a rainfall simulation using a protocol developed for the National
Research Project for Simulated Rainfall-Surface Runoff Studies. The results will be presented and the implications of the results will be discussed.
Speaker Information: Theophilus Udeigwe, Louisiana State University Agricultural Center, Dept. of Agronomy104 MB Sturgis HallLouisiana State University, Baton Rouge, LA 70803; Phone: 225-578-1360; E-mail: [email protected]
Session Information: Wednesday, November 3, 2004, 1:55 PM-3:45 PM Presentation Start: 2:45 PM
Keywords: Salinity; EC; Suspened solids; runoff