Subsurface Drip Irrigation Versus Center-Pivot Sprinkler for Applying Swine Effluent to Corn
A risk-averse irrigated corn producer would be better off choosing the more expensive subsurface drip irrigation (SDI) over center-pivot sprinkler (CPS), given limited aquifer life and swine effluent and urea fertilization. A stochastic optimization using EPIC data maximized expected utility of 100 years' worth of net revenues for a quarter section. Phosphorus accumulation was more likely with the CPS than with the SDI but soil nitrogen was constant under both systems. SDI conserves more water than CPS per acre but depletes the aquifer faster because a greater area is irrigated. These results were invariant in the sensitivity analysis.
Volume (Year): 38 (2006)
Issue (Month): 03 (December)
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- Salim, Juma K. & Dillon, Carl R. & Saghaian, Sayed H. & Kanakasabai, Murali, 2005. "Comparison of Decision Rules for Subsurface Drip Irrigation Practices Using a Nonlinear Mathematical Programming Model," 2005 Annual Meeting, February 5-9, 2005, Little Rock, Arkansas 35517, Southern Agricultural Economics Association.
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