Relating nitrogen use efficiency to nitrogen nutrition index for evaluation of agronomic and environmental outcomes in potato

Brian J. Bohman,Carl J. Rosen,David J. Mulla

Field Crops Research（2021）

Cited 9|Views0

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Abstract

•Nitrogen use efficiency [NUE] is best understood in terms of its constituent parts.•Interpreting N utilization efficiency depends on both N nutrition index and biomass.•A critical N utilization efficiency curve can be defined based on previous theory.•Increasing N uptake efficiency [NUpE] will reduce N losses to the environment.•Maximizing NUE does not necessarily improve agronomic or environmental outcomes.

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Key words

NUE,NUpE,NUtE,NNI,BMP,CR,NSI,PCU,UAN,VR,DAP,HI,iPAR,RUE,LAI,EONR,CNDC,CNUC,CNUtEC,W,Y,NLoss Potential,NInput,NInitial Soil,NSeed,NFertilizer,NIrrigation,NPrecipitation,NMineralization,NOutput,NResidual Soil,NPlant,NLeaching,%NPlant,%NCritical,NCritical,NUtECritical

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