Degree Type

Thesis

Date of Award

2007

Degree Name

Master of Science

Department

Agronomy

Major

Sustainable Agriculture

First Advisor

Charles Brummer

Second Advisor

Jean-Luc Jannink

Abstract

This thesis addresses first the socio-political, economic, and ecological consequences and causes of decreased forage production in Iowa, and then focuses on a breeding study related to the biofuel potential of reed canarygrass. In the first paper I review the agronomic, ecological, and economic benefits of forage incorporation into corn and soybeans rotations and then attempt to explain the socio-political reasons why forages are not grown on more Iowa farms. The second paper details an evaluation of reed canarygrass germplasm for biofuel traits. We evaluated the entire reed canarygrass germplasm collection available in the US for biomass and quality traits. We found significant variability for yield, height, and quality traits among germplasm of both US origin and from regions around the world. Higher yields from Central and Northern-European accessions as compared to Middle-Eastern and Eastern-European accessions suggest they would be the best candidates for inclusion in a direct breeding program.

DOI

https://doi.org/10.31274/rtd-180813-6795

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/

Copyright Owner

Julia Olmstead

Language

en

Proquest ID

AAI1446036

OCLC Number

180774786

ISBN

9780549141556

File Format

application/pdf

File Size

67 pages

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