This collection of annual reports of progress on Kansas fertilizer research covers the years 1994 to 2014. These reports provide a look at how research in agronomy has changed in Kansas over a 20 year period. Note: Fertilizer Research used the previous year in the title until 2014. This series of reports are now published through New Prairie Press starting in 2015: To access the 2014 report please see-Volume 1, Issue 3 (2015) Kansas Fertilizer Research. For Kansas Fertilizer Research Reports from 2014 to the present please go to Kansas Agricultural Experiment Station Research Reports on the New Prairie Press website.