NHI {NUETON}

Calculate N Harvest Index (NHI)

Description

The percent of plant tissue N that is contained in the yield component. Calculate NHI using the formula: NHI = YieldF / PlantNf

Usage

NHI(YieldF, PlantNf)

Arguments

YieldF

A numeric vector of final yield values.

PlantNf

A numeric value for plant tissue N.

Value

The calculated NHI value.

References

Primary: Congreves, K. A., Otchere, O., Ferland, D., Farzadfar, S., Williams, S., & Arcand, M. M. (2021, June 4). Nitrogen Use Efficiency Definitions of Today and Tomorrow. Frontiers in Plant Science, 12. https://doi.org/10.3389/fpls.2021.637108

Secondary: Moll, R. H., Kamprath, E. J., and Jackson, W. A. (1982). Analysis and interpretation of factors which contribute to efficiency of nitrogen utilization 1. Agron. J. 74, 562–564. doi: 10.2134/agronj1982.00021962007400030 037x

Examples

YieldF<- c(2.89, 3.66, 4.73, 4.16)
PlantNf <- c(2.92, 3.78, 4.68, 4.21)
NHI(YieldF, PlantNf)