Theses and Dissertations

Issuing Body

Mississippi State University


Larson, Erick J.

Committee Member

Cox, Michael S.

Committee Member

Catchot, Angus L., Jr.

Committee Member

Irby, J. Trenton

Committee Member

Henry, W. Brien

Date of Degree


Document Type

Graduate Thesis - Open Access


Plant and Soil Sciences (Agronomy)

Degree Name

Master of Science (M.S.)


College of Agriculture and Life Sciences


Department of Plant and Soil Sciences


Mississippi growers often have issues with corn seedling establishment due to saturated and cool soils, which can reduce productivity. Our first objective was to quantify yield reduction associated with variable emergence. Four patterns simulating various extent of affected plants and four different emergence delays were hand planted uniformly at a standard population. Plants were closely monitored to document emergence variability. Growth stages were measured three separate ways to identify the best field method to characterize stand variability. Data suggest there were yield disadvantages associated with emergence variability. Another objective was to evaluate practical replanting methods for Mid-South corn growers. Treatments included four populations planted at a normal time and replant interval. Two different series of treatments were imposed to evaluate the productivity of intra-planting seed in a partial stand. Corn grain yield was 11% greater when replanting in a clean seedbed, compared to all intra-planted treatments.