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International Journal of Agronomy
Volume 2012 (2012), Article ID 930630, 5 pages
http://dx.doi.org/10.1155/2012/930630
Research Article

Grain Sorghum Response to Hybrid, Row Spacing, and Plant Populations along the Upper Texas Gulf Coast

1Texas AgriLife Extension Service, Corpus Christi, TX 78406, USA
2Texas AgriLife Research, Corpus Christi, TX 78406, USA
3Texas AgriLife Research, Corpus Christi, TX 78102, USA
4Texas AgriLife Extension Service, Wharton, TX 77488, USA

Received 27 April 2012; Revised 13 June 2012; Accepted 14 June 2012

Academic Editor: David Clay

Copyright © 2012 Dan D. Fromme et al. 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

Grain sorghum (Sorghum bicolor L. Moench) along the upper Texas Gulf Coast is planted at different row spacings, plant populations, and hybrids according to grower preference and location. This study was conducted over a 3-year period (2001 to 2003) to determine the combination of hybrid, row spacing, and plant population on yield and net return per hectare. Below average rainfall for May and June occurred in 2002 and 2003 which resulted in lower yields than 2001. In 2001 and 2003, Dekalb (DK) 54 generally produced higher yields than Asgrow (A) 571 on the 51 cm row spacing. In 2002, no differences in grain sorghum yield were found when comparing both hybrids, plant populations, or row spacing with the exception of A 571 planted at 148,000 plants/ha on 102 cm centers which resulted in a yield reduction of at least 25%. When net returns were compared regardless of year or rainfall received, net dollar value per hectare tended to be higher for the 51 cm row spacing, especially with A 571.