Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Economically Optimal Nitrogen Fertilization for Yield and Protein in Hard Red Spring Wheat

Dustin A. Bakera, Douglas L. Young*,a, David R. Hugginsb and William L. Panc

a Dep. of Agric. and Resour. Econ., Washington State Univ., Pullman, WA 99164-6210
b USDA-ARS, Pullman, WA 99164
c Dep. of Crop and Soil Sci., Washington State Univ., Pullman, WA 99164-6420



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Fig. 1. Grain yield and protein response to applied N per Eq. [1] and [2], respectively.

 


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Fig. 2. Net returns response to N fertilization. Note P/D = protein premium/discount.

 


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Fig. 3. Economically optimal N levels in conventional-tillage hard red spring wheat for varying premium and discount (P/D) price structures.

 


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Fig. 4. Economically optimal protein levels in conventional-tillage hard red spring wheat for varying premium and discount (P/D) price structures.

 





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