| NRE {NUETON} | R Documentation |
Calculate Fertilizer-N Recovery Efficiency
Description
The percentage of fertilizer N that is taken up by the plant, accounting for background soil N levels; also sometimes referred to as apparent recovery. Calculate NRE using the formula: NRE = ((PlantNf - PlantN0) / FertN) * 100
Usage
NRE(PlantNf, PlantN0, FertN)
Arguments
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. |
FertN |
A numeric value for fertilizer N input. |
Value
The calculated NRE value as a percentage.
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
PlantNf <- c(2.92, 3.78, 4.68, 4.21)
PlantN0 <- c(1.22, 2.66, 3.99, 2.58)
FertN <- 15
NRE(PlantNf, PlantN0, FertN)