Theses and Dissertations

ORCID

https://orcid.org/0009-0006-4325-298X

Issuing Body

Mississippi State University

Advisor

Ramirez Avila, John Jairo

Committee Member

Locke, Martin A

Committee Member

Lynn, Thomas J

Date of Degree

12-8-2023

Original embargo terms

Campus Access Only 1 Year

Document Type

Graduate Thesis - Campus Access Only

Major

Civil Engineering

Degree Name

Master of Science (M.S.)

College

James Worth Bagley College of Engineering

Department

Department of Civil and Environmental Engineering

Abstract

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.

Sponsorship

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

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