Nitrogen Use Efficiency, Nitrogen Fertilizers, NUE, Nitrogen and the Environment Can we predict Grain Protein ?
World Nitrogen Use Efficiency for Cereal Production is 33%,
Agronomy Journal 91:357
  Grain Protein prediction  (SEE Option 30 for the On-Line OSU Calculator)  
  1998 Montana:  Predicting Spring Wheat Yield and Protein Response to Nitrogen (Grant Jackson)

  2003 Oklahoma: Late-season prediction of wheat grain yield and grain protein.
             Commun. Soil Sci. Plant Anal. 34:1837-1852.  Freeman et al.(2003)

  2002 Oklahoma:Influence of late-season foliar nitrogen applications on yield & grain nitrogen in winter wheat.               Agron. J. 94:429-434.
  2000 Idaho:  Nitrogen Management for Hard Wheat Protein Content

   Managing Grain Protein in Wheat using Remote Sensing
Grain protein and winter wheat grain yield
Relationship between yield and grain protein
yield and grain protein, winter wheat
  FOLIAR Nitrogen

    Influence of late-season foliar nitrogen applications on yield and grain nitrogen in winter wheat

    Foliar N in Chickpeas

     Foliar N in Apples

     Foliar N in Citrus

Trimble Pocket Sensor, Greenseeker, NDVI, nitrogen