PE: Calculate Physiological Efficiency
In NUETON: Nitrogen Use Efficiency Toolkit on Numerics

View source: R/PE.R

PE	R Documentation

Calculate Physiological Efficiency

Description

The contribution of fertilizer N from the plant tissues towards the yield component. Calculate PE using the formula: PE = (YieldF-Yield0)/(PlantNf-PlantN0)

Usage

PE(YieldF, Yield0, PlantNf, PlantN0)

Arguments

`YieldF`	A numeric vector of final yield values.
`Yield0`	A numeric vector of non-fertilized control yield values.
`PlantNf`	A numeric vector of values for plant N at the end of the experiment.
`PlantN0`	A numeric vector of values for plant N at the beginning of the experiment.

Value

The calculated PE 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: Dobermann, A. (2007). “Nutrient use efficiency–measurement and management,” in Proceedings of the International Fertilizer Industry Association (IFA) Workshop on Fertilizer Best Management Practices, 7–9 March 2007, Brussels, 1–28.

Examples

YieldF <- c(2.92, 3.78, 4.68, 4.21)
Yield0 <- c(1.98, 2.66, 4.26, 3.78)
PlantNf <- c(2.89, 3.66, 4.73, 4.16)
PlantN0 <- c(1.22, 2.66, 3.99, 2.58)
PE(YieldF, Yield0, PlantNf, PlantN0)

NUETON documentation built on Nov. 14, 2023, 1:07 a.m.