Evaluation of Hybrids, Planting Dates, and Planting Densities on Corn Growth and Yield under Rainfed Systems in Mississippi

Author

Matthew W. Hock

Issuing Body

Mississippi State University

Advisor

Henry, W. Brien

Committee Member

Varco, Jac J.

Committee Member

Reddy, K. Raja

Committee Member

Griffin, Roy Matthew

Date of Degree

8-14-2015

Document Type

Graduate Thesis - Open Access

Major

Agronomy

Degree Name

Master of Science (M.S.)

College

College of Agriculture and Life Sciences

Department

Department of Plant and Soil Sciences

Abstract

Improved hybrid genetics and more efficient farming techniques have increased corn (Zea mays L.) production and grain yields for Mid-South farmers. Early planting is one technique to mitigate heat and drought stress that negatively influence grain production. The first objective was: a) determine the effect of early planting on grain yield, b) to determine the effects on physiological characteristics and c) determine if some hybrids are better suited for early planting. Data suggest there were yield advantages for early planted treatments. Starkville 2014 yields exhibited the greatest reduction of .80 Mg ha-1 for each week that planting was delayed. A second objective was: a) determine optimum plant density when planting early, b) determine population effects on physiological characteristics, and c) determine hybrid responses. Hybrids were evaluated at seeding rates ranging from 49,400 to 98,800 plants ha-1. Corn grain yield was maximized at 86, 450 to 98,800 plants ha-1.

URI

https://hdl.handle.net/11668/20097

Recommended Citation

Hock, Matthew W., "Evaluation of Hybrids, Planting Dates, and Planting Densities on Corn Growth and Yield under Rainfed Systems in Mississippi" (2015). Theses and Dissertations. 2032.
https://scholarsjunction.msstate.edu/td/2032