Search National Agricultural Library Digital Collections

NALDC Record Details:

Influence of seeding rate and row spacing on cuphea seed yield in the Northern Corn Belt

Permanent URL:
http://handle.nal.usda.gov/10113/47149
Abstract:
Cuphea (Cuphea viscosissima Jacq. X C. lanceolata W.T. Aiton; PSR23) is a new oilseed crop adapted to temperate climates that provides a rich source of medium-chain triglycerides. Although prior research indicated cuphea seed yield is not greatly affected by row spacing due to its indeterminate growth, little is known about optimum seeding rate. The present study was designed to test effects of varying seeding rate with row spacing on seed yield. Seed was sown at rates of 4.5, 9.0, and 13.4kgha⁻¹ in 380, 560, and 740mm spaced rows in west central Minnesota during 2002 and 2003. Seeding rate did have a significant effect on seed yield and harvest index in 2002, but not in 2003. In 2002, yield under the 9.0kgha⁻¹ rate was 47 and 19% greater than the highest and lowest seeding rates, respectively. The interaction of row spacing and seeding rate was generally not significant. Cuphea does have good yield plasticity over a range of row spacing and seeding rates. However, results generally indicated that a seeding rate of around 9.0kgha⁻¹ is near optimum for PSR23 cuphea production and that row spacing less than 740mm tended to favor greater seed and biomass yields.
Author(s):
Gesch, Russ W. , Kim, Ki-In , Forcella, Frank
Subject(s):
Cuphea , oilseeds , plant adaptation , medium chain triacylglycerols , crop yield , row spacing , plant density , optimization , harvest index , environmental factors , energy crops , Minnesota
Format:
p. 692-695.
Note:
Includes references
Source:
Industrial crops and products 2010 Nov., v. 32, no. 3
Language:
English
Publisher:
[Amsterdam; New York, NY]: Elsevier Science
Year:
2010
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
File:
Download [PDF File]
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.