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International Journal of Agronomy
Volume 2014 (2014), Article ID 195012, 12 pages
http://dx.doi.org/10.1155/2014/195012
Research Article

Row Spacing, Landscape Position, and Maize Grain Yield

1Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Avenue San Martín 4453, C1417DSE Ciudad de Buenos Aires, Argentina
2Cátedra de Cerealicultura, Departamento de Producción Vegetal, Facultad de Agronomía, Universidad de Buenos Aires,Avenue San Martín 4453, C1417DSE Buenos Aires, Argentina
3Dow AgroScience Argentina S.A., Ruta 8 km 264, Colón, 2720 Buenos Aires, Argentina

Received 25 June 2013; Accepted 8 October 2013; Published 14 January 2014

Academic Editor: Robert J. Kremer

Copyright © 2014 Gustavo Ángel Maddonni and Joaquín Martínez-Bercovich. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The use of narrow row spacing for the different landscape positions of a field could punish maize (Zea mays L.) grain yield. Two experiments were conducted (2006/07 and 2007/08) at different landscape positions in the Inland Pampas of Argentina. Hybrid DK190MG was grown at the commonest plant density used at each landscape position (approximately 5.1 plants/m2 at the summit, 6.5 plants/m2 at shoulder-slope position, and 7.6 plants/m2 at foot-slope position) with three row spacings (0.38 m, 0.52 m, and 0.38 m in a skip-row pattern). At the silking stage of maize crops, soil water content (0–200 cm depth) and maximum light capture differed ( ) among landscape positions but were similar among row spacings. Differences in grain yield among landscape positions (mean 806, 893, and 1104 g/m2 at the summit, shoulder-slope position, and foot-slope position, resp.) were related to kernel number/m2 ( ), which was closely related ( ) to light capture around silking. Grain yield reductions (6 to 20%) were recorded when crops were cultivated in rows 0.38 m apart. The skip-row pattern did not improve grain yield. Maize grain yield was optimized in rows 0.52 m apart along the sandy landscape positions of the fields.