| AE {NUETON} | R Documentation |
Calculate Agronomic Efficiency
Description
The contribution of fertilizer N towards yield, compared to a non-fertilized control Calculate AE using the formula: AE = (YieldF-Yield0)/FertN
Usage
AE(YieldF = NULL, Yield0 = NULL, FertN = NULL, PE = NULL, RE = NULL)
Arguments
YieldF |
A numeric vector for yield in fertilized Conditions. |
Yield0 |
A numeric vector of non-fertilized control yield values. |
FertN |
The value of inorganic N contained in any form of N input (from synthetic or organic sources) |
PE |
Physiological Efficiency numeric value |
RE |
Recovery Efficiency numeric value |
Value
The calculated AE 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)
FertN <- 15
AE(YieldF, Yield0, FertN)
PE<-10
RE<-5
AE(PE=PE, RE=RE)