References
Ali, M. B. “Characteristics and Production Costs of U.S. Wheat Farms”. United States
Department of Agriculture Statistical Bulletin number 974-5, 2002.
American Society of Agricultural Engineers Standards. “Agricultural Machinery Management
Data.” ASAE D497, 2001.
Bauer, A. and A.L. Black. “Effect of Management Method of Erect Stubble at Spring Planting
on Performance of Spring Wheat.” North Dakota State University Agricultural
Experiment Station Research Report No. 524, 1992.
Epplin, F.M., G.A. Al-Sakkaf, and T.F. Peeper. “Impacts of Alternative Tillage Methods for
Continuous Wheat on Grain Yield and Economics: Implications for Conservation
Compliance.” Journal of Soil and Water Conservation 49(1994):394-399.
Heer, W.F., and E.G. Krenzer, Jr. “Soil Water Availability for Spring Growth of Winter Wheat
(Triticum Aestivum L.) as Influenced by Early Growth and Tillage.” Soil and Tillage
Research 14(1989):185-196.
Doye, D., R. Sahs, and D. Kletke. “Oklahoma Farm and Ranch Custom Rates, 2003-2004.”
Department of Agricultural Sciences and Natural Resources. Oklahoma State University
Cooperative Extension Service Current Report CR-205, Stillwater, OK, 2004.
Kletke, D., and R. Sestak. The operation and use of MACHSEL: A farm machinery selection
template. Department of Agricultural Economics Computer Software Series CSS-53.
Oklahoma State University, Stillwater, OK, 1991.
Oklahoma Agricultural Statistics Service. 2001 Bulletin. Available online:
http://www.nass.usda.gov/ok/5yr00/Garfield.htm, 2002.
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