Theses and Dissertations

Issuing Body

Mississippi State University


Poston, H. Daniel

Committee Member

Koger, H. Clifford

Committee Member

Sciumbato, L. Gabriel

Committee Member

Blaine, Alan M.

Date of Degree


Document Type

Graduate Thesis - Open Access

Degree Name

Master of Science


College of Agriculture and Life Sciences


Department of Plant and Soil Sciences


Early planting of indeterminate soybean varieties has increased yield potential in Mississippi. Narrow row patterns have effectively alleviated canopy closure problems and maximized light interception. Stresses related to inadequate drainage persist. Field experiments were conducted in 2006 and 2007 to evaluate productivity and profitability of bedding systems to minimize stresses related to poor drainage. Soybean planted on a conventional 100 cm bedding system provided a higher degree of growth and development and higher seed yields than flat plantings when border irrigated both years. Raised 100 cm-wide beds offered 23 to 45% greater net returns above input costs relative to flat plantings in 2006 and 2007 respectively. Under simulated flood irrigation, soybean planted on 200 cm-wide beds produced yields similar to conventional beds in 2006; however in 2007 200 cm-wide beds produced higher yields than flat planted plots but lower than 100 cm-wide beds.



200-cm-wide beds||improved drainage||variety placement||strobilurin fungicide