SSMG-24 (D. S. Long, R. E. Engel, and P. Reep)

Grain Protein Sensing to Identify Nitrogen Management in Spring Wheat

Summary:

Wheat producers in the northern Great Plains market grain under a quality payment system that provides economic incentives for optimizing grain protein. Protein concentration in grain is greatly influenced by the level of nitrogen (N) fertility. However, there is significant spatial variation in N fertility in a field. Conventional uniform application ignores this variability and leads to over-fertilization in some areas and under-fertilization in others. Therefore, the question arises as to whether grain protein can be optimized on a site-specific basis by accounting for spatial variability of N fertility within individual fields.

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