HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (3) Citing Articles via Google Scholar Google Scholar Articles by Thomison, P. R. Articles by Dobbels, T. L. Search for Related Content PubMed Articles by Thomison, P. R. Articles by Dobbels, T. L. Agricola Articles by Thomison, P. R. Articles by Dobbels, T. L. Related Collections Maize Production Agriculture

CORN

TopCross High Oil Corn Production

Select Grain Quality Attributes

^a Horticulture and Crop Science Dep., Ohio State Univ., Columbus, OH 43210-1086
^b Ohio State Univ. Ext., Columbus, OH 43210-1086

* Corresponding author (thomison.1{at}osu.edu)

Received for publication November 6, 2001. High oil corn (Zea mays L.) enhances the feed rations of livestock and poultry and reduces the need for expensive dietary supplements. The TopCross¹ grain production system, which involves use of a blend (TC Blend) of two types of corn, is rapidly gaining popularity as the preferred method of producing high oil corn (HOC). Field experiments and on-farm studies were performed in 1995 to 1999 across a range of production environments in Ohio to compare select grain quality attributes of HOC TC Blends with their conventional counterparts (check hybrids). Oil levels in grain were 31 g kg^-1 higher in TC Blends compared with check hybrids averaged across experiments and on-farm tests. Drought conditions and late plantings had little or no effect on the differences in oil levels between TC Blends and check hybrids. Protein levels were generally similar for TC Blends and check hybrids, but lysine content was 20% greater in grain of TC Blends. Metabolizable energy levels in grain averaged 130 kcal kg^-1 more in TC Blends compared with check hybrids. Starch content was five percent less in TC Blends compared with checks. The fatty acid composition of grain from TC Blends was higher for stearic acid (2.5 vs. 2.0%) and oleic acid (34.6 vs. 25.9%), but lower for linoleic acid (49.5 vs. 58.8%) and linolenic (1.0 vs. 1.3%), compared with check hybrids. Results of this study demonstrate that TC Blends can produce grain with consistently higher nutritional levels than conventional corn hybrids under variable growing conditions.

Abbreviations: GDD, growing degree days • HO, high oil • HOC, high oil corn • ME, metabolizable energy • NIT, near infrared transmittance • NWBRF, Northwest Branch Research Farm • WBRF, Western Branch Research Farm

This article has been cited by other articles:

				W. Tanaka and G. A. Maddonni Pollen Source and Post-Flowering Source/Sink Ratio Effects on Maize Kernel Weight and Oil concentration Crop Sci., March 19, 2008; 48(2): 666 - 677. [Abstract] [Full Text] [PDF]

				T. F. Mangen, P. R. Thomison, and S. D. Strachan Early-Season Defoliation Effects on TopCross High-Oil Corn Production Agron. J., April 27, 2005; 97(3): 823 - 831. [Abstract] [Full Text] [PDF]