NBI: Calculate N Balance Intensity (NBI)

In NUETON: Nitrogen Use Efficiency Toolkit on Numerics

Calculate N Balance Intensity (NBI)

Description

The difference between fertilizer N applied and the N removed as yield; commonly called N surplus.

Calculate NBI using the formula: NBI = YieldN-FertN

Usage

NBI(YieldN, FertN)

Arguments

YieldN	A numeric vector of the N removed as yield values.
FertN	A numeric value for fertilizer N input.

Value

The calculated NBI 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: IPNI (2014). Nutrient Performance Indicators: The Importance of Farm Scale Assessments, Linked to Soil Fertility, Productivity, Environmental Impact and the Adoption of Grower Best Management Practices. Available online at: http://anz.ipni.net/ipniweb/region/anz.nsf/0/9312A2172A0B917CCA257E8E007219B4/$FILE/IssueReviewPerfInd081114.pdf

Examples

YieldN <- c(5.4, 6.3, 4.8, 7.2)
FertN <- 1.5
NBI(YieldN, FertN)

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