References
- Black, A. L., and A. Bauer. 1988. Setting winter wheat yield goals. In Proc Workshop Central Great Plains Profitable Wheat Management, Wichita, KS, August 17–20. ed. J. L. Havlin, 24–34. Atlanta, GA: Potash and Phosphate Inst.
- Brummer, J. E., and J. G. Davis. 2014. Fertilizing mountain meadows. Fact Sheet no 9/14 0.535, Fort Collins, CO: Colorado State University Cooperative Extension.
- Cabrera, M. L., M. F. Vigil, and D. E. Kissel. 1994. Potential nitrogen mineralization: Laboratory and field evaluations. In Soil testing: Prospects for improving nutrient recommendations, 15–29. SSSA special publication 40. Madison, WI: Soil Science Society America.
- Chang, J. M., D. E. Clay, C. G. Carlson, C. L. Reese, S. A. Clay, and M. M. Ellsbury. 2004. Defining yield goals and management zones to minimize yield and nitrogen and phosphorus fertilizer recommendation errors. Agronomy Journal 96:825–31. doi:10.2134/agronj2004.0825.
- Colorado Agricultural Statistics. 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009. USDA NASS Colorado Field Office. Lakewood, Colorado: USDA-NASS. www.nass.usda.gov/co
- Dahnke, W. C., L. J. Swenson, R. J. Goos, and A. G. Leholm. 1988. Choosing a crop yield goal. Fargo, ND: North Dakota State Extension Service. SF-822.
- FAO stastical yearbook 2007–2008. 2008. Rome: Food and Agriculture Organization of the United Nations. ISBN 92-5-105 189-7. Available at http://www.fao.org/economic/ess/ess-publications/ess-yearbook/fao-statistical-yearbook-2007-2008/notes/en/
- Franzen, D., G. Endres, J. Lukach, R. Ashley, J. Staricka, and M. Kent. 2010. Major revisions of state fertilizer recommendations for spring wheat and durum wheat. Proceedings of the Great Plains Soil Fertility Conference 13:86–96.
- Kefyalew, G., S. L. Holtz, D. B. Arnall, L. M. Fultz, T. L. Hanks, K. D. Lawles, C. J. Mack, K. W. Owen, S. D. Reed, J. Santillano, O. Walsh, M. J. White, and W. R. Raun. 2007. Weather, fertilizer, previous year yield and fertilizer levels affect ensuing year fertilizer response of wheat. Agronomy Journal 99:1607–14. doi:10.2134/agronj2007.0030.
- Hernandez, J. A., and D. J. Mulla. 2008. Estimating uncertainty of economically optimum fertilizer rates. Agronomy Journal 100:1221–29. doi:10.2134/agronj2007.0273.
- Johnson, G. V., and W. R. Raun. 2003. Nitrogen response index as a guide to fertilizer management. Journal of Plant Nutrition 26 (2):249–62. doi:10.1081/PLN-120017134.
- Mergoum, M., and H. Gomez-Macpherson. 2004. Triticale improvement and production. FAO Plant production and protection paper 179, Food and Agriculture Organization of the United Nations, Rome, 2004. ISBN 92-5-105 182-8.
- Mullen, R. W., K. W. Freeman, W. R. Raun, G. V. Johnson, M. L. Stone, and J. B. Solie. 2003. Identifying an in–season response index and the potential to increase wheat yield with nitrogen. Agronomy Journal 95:347–51. doi:10.2134/agronj2003.0347.
- Nielsen, D. C., and M. F. Vigil. 2010. Precipitation storage efficiency during fallow in wheat–fallow systems. Agronomy Journal 102:537–43. doi:10.2134/agronj2009.0348.
- SAS Institute. 2009. Online doc. 9.1.3. Cary, NC: SAS Inst. http://support.sas.com/onlinedoc/913/docMainpage.jsp
- Shroyer, J. P., S. A. Staggenborg, R. L. Bowden, D. A. Peterson, R. E. Lamond, and C. R. Thompson. 1996. Triticale in Kansas. Kansas State University Ag. Exp. Station and Cooperative Extension Service publication. MF-2227. Manhattan, KS: Kansas State University.
- Surowiecki, J. 2004. The wisdom of crowds. New York: Anchor Books.
- USDA-ERS Fertilizer use and price. 2013. USDA economic research service. July 2013. www.ers.usda.gov/data-products/fertilizer-use-and-price.aspx
- Vigil, M. F., B. Eghball, M. L. Cabrera, B. R. Jakubowski, and J. G. Davis. 2002. Accounting for seasonal nitrogen mineralization: An overview. Journal of Soil and Water Conservation 57 (6):464–69.
- Vigil, M. F., D. E. Kissel, M. L. Cabrera, and C. W. Raczkowski. 1993. Optimal spacing of surface banded nitrogen on fescue. Soil Science Society of America Journal 57:1629–33. doi:10.2136/sssaj1993.03615995005700060037x.