Normalisation factors for aerobic soil degradation according to FOCUS guidance

- - -

Time step normalisation factors for aerobic soil degradation as described -in Appendix 8 to the FOCUS kinetics guidance (FOCUS 2014, p. 369).

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f_time_norm_focus(object, ...)
-
-# S3 method for numeric
-f_time_norm_focus(
-  object,
-  moisture = NA,
-  field_moisture = NA,
-  temperature = object,
-  Q10 = 2.58,
-  walker = 0.7,
-  f_na = NA,
-  ...
-)
-
-# S3 method for mkindsg
-f_time_norm_focus(
-  object,
-  study_moisture_ref_source = c("auto", "meta", "focus"),
-  Q10 = 2.58,
-  walker = 0.7,
-  f_na = NA,
-  ...
-)

- -

Arguments

object: An object containing information used for the calculations
...: Currently not used
moisture: Numeric vector of moisture contents in \% w/w
field_moisture: Numeric vector of moisture contents at field capacity -(pF2) in \% w/w
temperature: Numeric vector of temperatures in °C
Q10: The Q10 value used for temperature normalisation
walker: The Walker exponent used for moisture normalisation
f_na: The factor to use for NA values. If set to NA, only factors -for complete cases will be returned.
study_moisture_ref_source: Source for the reference value -used to calculate the study moisture. If 'auto', preference is given -to a reference moisture given in the meta information, otherwise -the focus soil moisture for the soil class is used

References

FOCUS (2006) “Guidance Document on Estimating Persistence -and Degradation Kinetics from Environmental Fate Studies on Pesticides in -EU Registration” Report of the FOCUS Work Group on Degradation Kinetics, -EC Document Reference Sanco/10058/2005 version 2.0, 434 pp, -http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics -FOCUS (2014) “Generic guidance for Estimating Persistence -and Degradation Kinetics from Environmental Fate Studies on Pesticides in -EU Registration” Report of the FOCUS Work Group on Degradation Kinetics, -Version 1.1, 18 December 2014 -http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics

Examples

f_time_norm_focus(25, 20, 25) # 1.37, compare FOCUS 2014 p. 184
-#> [1] 1.373956
-
-D24_2014$meta
-#>                                 study usda_soil_type study_moisture_ref_type
-#> Mississippi                Cohen 1991      Silt loam                    <NA>
-#> Fayette     Liu and Adelfinskaya 2011      Silt loam                     pF1
-#> RefSol 03-G Liu and Adelfinskaya 2011           Loam                     pF1
-#> Site E1     Liu and Adelfinskaya 2011           Loam                     pF1
-#> Site I2     Liu and Adelfinskaya 2011     Loamy sand                     pF1
-#>             rel_moisture temperature
-#> Mississippi           NA          25
-#> Fayette              0.5          20
-#> RefSol 03-G          0.5          20
-#> Site E1              0.5          20
-#> Site I2              0.5          20
-# No moisture normalisation in the first dataset, so we use f_na = 1 to get
-# temperature only normalisation as in the EU evaluation
-f_time_norm_focus(D24_2014, study_moisture_ref_source = "focus", f_na = 1)
-#> $f_time_norm was (re)set to normalised values
-

- -

Normalisation factors for aerobic soil degradation according to FOCUS guidance

Arguments

References

See also

Examples