MANNER organic-manure incorporation-delay factor.

Multiplicative ammonia-volatilisation factor for organic manure as a function of the delay between surface application and soil incorporation, by manure type. Used by calculate_manner_nh3()'s organic-manure path, distinct from manner_params's incorporation table (a land-use factor reused by the synthetic-fertiliser path; see that dataset's description). The delay bins are monotonically increasing; a supplied delay is assigned to the first (shortest) bin whose delay_hours is greater than or equal to it, and a missing or infinite delay maps to "No incorporation" (factor 1, no volatilisation reduction).

Usage

manner_incorporation_factor

Format

A tibble with columns:

manure_type

Organic manure type: "cattle_slurry", "pig_slurry", "FYM" or "poultry_manure".

delay_bin

Incorporation-delay bin label (e.g. "<2 h", "6-12 days", "No incorporation").

delay_hours

Upper bound of the delay bin in hours; NA for "No incorporation".

factor

Numeric multiplicative incorporation factor.

Source

WHEP project-internal coefficient workbook (not a public DOI): Spain historical MANNER implementation, NH3_model.xlsx, sheet "manures".

Examples

manner_incorporation_factor
#> # A tibble: 40 × 4
#>    manure_type    delay_bin delay_hours factor
#>    <chr>          <chr>           <dbl>  <dbl>
#>  1 pig_slurry     <2 h                2 0.147 
#>  2 cattle_slurry  <2 h                2 0.211 
#>  3 FYM            <2 h                2 0.118 
#>  4 poultry_manure <2 h                2 0.0472
#>  5 pig_slurry     2-4 h               4 0.256 
#>  6 cattle_slurry  2-4 h               4 0.348 
#>  7 FYM            2-4 h               4 0.212 
#>  8 poultry_manure 2-4 h               4 0.0901
#>  9 pig_slurry     4-6 h               6 0.341 
#> 10 cattle_slurry  4-6 h               6 0.444 
#> # ℹ 30 more rows