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 |
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:
C_input_org: C input by organic ammendment (kgC/ha)
N_input_org: N input by organic ammendment (kgN/ha)
comment (optional): Source of information on properties of organic amendment
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
-
C_input()
to calculate C inputs for a management_df -
N_input()
to calculate N inputs for a management_df -
C_input_crops()
to calculate C inputs by crops -
C_input_cover_crops()
to calculate C input for cover crops -
CN_input_amendments_LUT()
for the look-up-table for organic amendments reference values
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)