Economically Optimal Nitrogen Fertilization for Yield and Protein in Hard Red Spring Wheat
By D. A. Baker, D. Young, David R. Huggins, W. Pan. Agronomy Journal, 2004
52 citations recorded by the source corpus.
This analysis determines profit maximizing N fertilization levels of hard red spring wheat (HRSW) for various wheat prices, N prices, and protein-based HRSW price premium/discount (P/D) structures for south eastern Washington data. Fertilizer response data consisting of rates of N fertilization (lb/ac), grain yield (bu/ac), and grain protein (%) were used to statistically estimate regression relationships that predicted yield and protein in response to N. All predicted net return maximizing N, protein, and yield levels were within the data range. Increasing P/D incentives for protein increased optimal N, the expected economic result. At the high P/D structures, the P/D structure dominated N and wheat prices in determining optimal N application levels. Overall, net return-maximizing yields varied only modestly with changes in both N and wheat price in this data set. However, in all scenarios, as P/D incentives increased, net return maximizing N levels were beyond the level that resulted in maximum yield. At the two lowest P/D structures, which provided the lowest reward for protein, it was most profitable to fertilize for slightly less than 14% expected protein. These results indicate that it is not always profitable to use 14% protein as an N fertilization goal. Abbreviations: CT, conventional tillage; HRSW, hard red spring wheat; HRWW, hard red winter wheat; N, nitrogen; NO3, nitrate; NT, No Tillage; P/D, premium/discount; SWSW, soft white spring wheat; SWW, soft white wheat.
Subfields: Economics and Econometrics, General Agricultural and Biological Sciences
View Paper: https://www.semanticscholar.org/paper/b9a27af7bc394ea987674ff92fd9fbc3216b4b97
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Citations in the corpus
- Impact of uncertainty on the optimum nitrogen fertilization rate and agronomic, ecological and economic factors in an oilseed rape based crop rotation (2007, background): “The impact of protein concentration on net revenues were defined according to Baker et al. (2004) by Eqn (7): NR=(Ypw)x(Npn)+((Px115)5Y) (7) where NR is the net revenue (e/ha), Y the grain yield (t/ha), N the nitrogen application rate (kg N/ha), P the protein concentration (mg/g), pw the market…”