Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Larson, Erick J.

Committee Member

Cox, Michael S.

Committee Member

Roberts, Darrin F.

Committee Member

Ebelhar, M. Wyane

Committee Member

Martin, Steven W.

Date of Degree

8-10-2018

Document Type

Graduate Thesis - Open Access

Major

Plant and Soil Sciences (Agronomy)

Degree Name

Master of Science (M.S.)

College

College of Agriculture and Life Sciences

Department

Department of Plant and Soil Sciences

Abstract

Row patterns affected irrigated corn productivity when grown in the Mid-South region of the United States. Narrow (76 cm) row spacing increased grain yield 8% when compared to traditional wide (96-102 cm) row spacing. Twin rows (20-25 cm spacing) in a wide (96-102 cm) row pattern, produced similar grain yield as a traditional wide single row. At a normal plant density of 79,040 ha-1, traditional wide rows yielded 10.51 Mg ha-1, twin wide rows yielded 10.34 Mg ha-1, and the narrow rows yielded 11.33 Mg ha-1. Growing corn at various plant densities did not affect corn grain yield response to various row patterns. As a comparison the traditional wide rows and twin rows were similar in their yield, and the narrow rows performed better. Corn grain yields for the traditional 96-102 cm wide single rows were 11.20 Mg ha-1, wide 96-102 cm twin rows yielded 11.22 Mg ha-1, and narrow 76 cm rows produced 12.07 Mg ha-1. Row pattern had no effect on corn plant height, photosynthetically active radiation (PAR), leaf area index (LAI), SPAD, stalk diameter, and plant lodging in either study.

URI

https://hdl.handle.net/11668/19917

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