N_input: Estimate nitrogen input

In SoilManageR: Calculate Soil Management Indicators for Agricultural Practice Assessment

Estimate nitrogen input

Description

This function estimates the nitrogen (N) input by mineral and organic fertilization into the soil system per year.

Usage

N_input(var_MGMT_data, extended.output = FALSE)

Arguments

var_MGMT_data	a management_df that contains the management information
extended.output	an optional logical value: If FALSE, N input values are aggregated by year If TRUE, a tibble with all management operations is returned Default value is FALSE

Details

The function takes a management_df as input and returns N input values per year in the management_df.

Alternatively, it can return a extensive tibble with all management operations and their N input values.

The functions calculates the N input by organic fertilization with the calculate_N_input_tibble() and the CN_input_amendments() function. Furthermore, it calculates the livestock intensity (LSU/ha) by deviding the animal derived N by ⁠105kgN/LSU⁠.

Be aware that the function currently neglects N that is fixated by plants (e.g. legumes)

Value

by default, a tibble with N input values (organic N, mineral N and total N) by year is returned. If extended.output = TRUE, a tibble with daily resolution is returned.

See Also

• calculate_indicators() to calculate all management indicators for a management_df

• CN_input_amendments() for the calculation of N inputs from organic amendments

• calculate_N_input_tibble() a helper function that calculates the N input tibble

• calculate_indicators() to calculate all management indicators for a management_df

• CN_input_amendments() for the calculation of N inputs from organic amendments

• calculate_N_input_tibble() a helper function that calculates the N input tibble

Examples

#example that returns annual N input values
N_input(EXAMPLE_data)

#example that returns a tibble with all management operations and their N input
N_input(EXAMPLE_data, extended.output = TRUE) 

SoilManageR documentation built on June 8, 2025, 9:36 p.m.