Theses and Dissertations


Issuing Body

Mississippi State University


Ramirez Avila, John Jairo

Committee Member

Locke, Martin A

Committee Member

Lynn, Thomas J

Date of Degree


Original embargo terms

Campus Access Only 1 Year

Document Type

Graduate Thesis - Campus Access Only


Civil Engineering

Degree Name

Master of Science (M.S.)


James Worth Bagley College of Engineering


Department of Civil and Environmental Engineering


Several studies have reported agronomic benefits by improving soil health/quality, but uncertain knowledge remains when determining specific impacts on water quality off-field. This study investigated the links between runoff water quality and soil health/quality in agricultural fields of the Mississippi delta under three land management scenarios: Conservation Reserve Program (CRP), vegetative buffer (VB), and row crops (RC). Using the Soil Management Assessment Framework (SMAF), a Soil Quality Index (SQI) was obtained based on ten soil health/quality indicators from 2008 and 2012 datasets. The SMAF identified significant differences in soil health/quality improvements among scenarios over a four-year period. Varied relationships between water quality parameters, SQI, and soil health/quality indicators were determined. Individually, physical and chemical soil indicators were also correlated with runoff water quality. Overall, the evidenced relationship between soil health/quality and water quality parameters was stronger in areas under CRP.


United States Department of Agriculture-Agriculture Research Service (USDA-ARS)