Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Gholson, Drew M.

Committee Member

Singh, Gurbir

Committee Member

Martin, Steve

Committee Member

Kaur, Gurpreet

Date of Degree

12-8-2023

Original embargo terms

Campus Access Only 2 Years

Document Type

Graduate Thesis - Campus Access Only

Major

Agronomy

Degree Name

Master of Science (M.S.)

College

College of Agriculture and Life Sciences

Department

Department of Plant and Soil Sciences

Abstract

Years of intensive tillage operations and heavy winter rainfalls have taken a toll on the soils in the Mississippi Delta causing compaction and nutrient losses due to runoff. The purpose of this research was to determine the effects of tillage systems and P and K fertilizer placement methods on corn and soybean production, as well as soil properties in the Mississippi Delta. The tillage treatments included conventional tillage, conventional tillage with subsoiling, and strip-tillage. The fertilizer placement treatments included a non-treated control, incorporated with tillage, and broadcast after tillage. Strip-tillage treatments reduced soil compaction and maintain nutrient levels while improving or maintaining yields in both crops. A more long term study is needed to determine if incorporating fertilizer with tillage will impact crop yields.

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