Greg Halich, Ray Smith, Kenny Burdine 2009. Profitability of Spring Hayfield Nitrogen Applications
2009 Guide
(AEC 2009-02)
http://www.ca.uky.edu/cmspubsclass/files/ghalich/Profitability%20of%20Spring%20Hayfield%20Nitrogen%20Applications%20(2009).pdf
Authors: Ray Smith, Kenny Burdine, Gregory Halich