Issued also as Thesis (Ph. D.)--Columbia University. / Bibliography at end of each chapter except the first.

Thesis (M.S.)--University of Wisconsin--Madison, 1983. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 68-70).

Thesis (doctoral)--Universität St. Gallen, 1999.

Thesis (Ph.D.)--Bowling Green State University, 2006. / Document formatted into pages; contains vii, 52 p. Includes bibliographical references.

Thesis (doctoral)--Universiẗat, Freiburg (Breisgau), 2003.

Berlin, Humboldt-University, Diss., 2004.

Thesis (doctoral)--Swedish University of Agricultural Sciences, 2006. / Errata sheet inserted. Appendix includes reproductions of papers and manuscripts co-written with other authors. Includes bibliographical references. Issued also electronically via World Wide Web in PDF format; online version lacks appendix of papers.

Thesis (M.S.)--University of North Texas, May, 2007. / Title from title page display. Includes bibliographical references.

Universiẗat, Diss., 2003--Bonn.

Master of Science / Department of Agricultural Economics / Andrew P. Barkley / From 1990 to 2016, the Kansas wheat varieties with milling and baking quality rated as “Less Desirable” accounted for 22% of all wheat acres planted, compared with 36% during the period 1974 to 1993. Thus, wheat producers have selected wheat varieties with lower end-use quality over time. Regression analysis was used to identify and quantify the determinants of planted wheat varieties in Kansas over the time period 1990 to 2016. The results show that Kansas wheat producers make variety decisions primarily based on relative yield and previously planted varieties. Wheat producers also consider the end-use qualities on test weight and milling and baking quality. There were more varieties planted in 1990-2016 than during the 1974-1993 period, and producers have planted with a greater emphasis on yield than other production characteristics.