Nitrogen Carry-over Impacts in Irrigated Cotton Production, Southern High Plains of Texas
Fecha
1989-12Autor
Onken, Arthur B.
Deussen, Curtis R.
Ethridge, Don E.
Segarra, Eduardo
Metadatos
Mostrar el registro completo del ítemResumen
A dynamic optimization model which introduces an intertemporal nitrate-nitrogen
residual function is used to derive and evaluate nitrogen fertilizer optimal decision
rules for irrigated cotton production in the Southern High Plains of Texas. Results
indicate that optimal nitrogen applications critically depend on initial nitrate-nitrogen
levels and nitrogen-to-cotton price ratios. Also, the results indicate that single-year
optimization leads to suboptimal nitrogen applications, which helps explain long-term
cotton yield declines in the Southern High Plains of Texas; but single-year
optimization docs not significantly impact the net present value of returns of irrigated
cotton operations.