CN_input_amendments {SoilManageR}R Documentation

Estimate C and N inputs of organic amendments

Description

Estimates the carbon (C) and total nitrogen (N) input into the soil system by organic amendments.

Usage

CN_input_amendments(
  amount,
  amd_type = NA,
  DMC = NA,
  C_content = NA,
  N_content = NA,
  return.comment = FALSE,
  concentration_liquids = 0.5
)

Arguments

amount

Amount of organic amendment in fresh weight (t/ha)

amd_type

Type of organic manure, there are default values available for "Slurry_dairy_cow", "Manure_dairy_cow", "Slurry_cattle", "Manure_cattle", "Slurry_pig", "Manure_pig", "Compost", "Biorga_Quick_12N" and others (see CN_input_amendments_LUT)

DMC

dry matter content of the organic amendment (gDM/kgFM)

C_content

C content of the dry matter (gC/kgDM)

N_content

N content of the dry matter (gN/kgDM)

return.comment

(optional): logical value if comments are returned or not. Default = FALSE

concentration_liquids

concentration factor for liquid amendments. Default value is .5.

Details

The C and N inputs by organic amendments is calculated based on the dry matter content (DMC) and the C and N content of the dry matter of the amendment. If the contents are not specified, default values from the Swiss fertilizer recommendations (Sinaj et al. 2017) are assumed. The default values are available the look-up-table CN_input_amendments_LUT For all slurries and liquid amendments (DMC < 150 g/kg), a dilution of 50% is assumed if default DMC values from the CN_input_amendments_LUT are used.

Value

a tibble with the following parameters:

References

Sinaj S, Charles R, Baux A, Dupuis B, Hiltbrunner J, Levy Häner L, Pellet D, Blanchet G, Jeangros B (2017). “Grundlagen für die Düngung landwirtschaftlicher Kulturen in der Schweiz (GRUD): Düngung von Ackerkulturen.” Agrarforschung Schweiz, Spezialpublikation, Chapter 8(6), 1–46. https://ira.agroscope.ch/en-US/Page/Publikation/Index/36799.

See Also

Examples

#example where amount, dry matter content, C and N content are known.
CN_input_amendments(40, DMC = 300, C_content = 300, N_content = 30)

#example where only amount and type of amendment are known 
CN_input_amendments(20, "Manure_pig")

#example of a diluted slurry
CN_input_amendments(20, amd_type = "Slurry_dairy_cow", DMC = 50)



[Package SoilManageR version 1.1.0 Index]