drift_percentages_rautmann: Calculate drift percentages based on Rautmann data

In jranke/pfm: Utilities for Pesticide Fate Modelling

Calculate drift percentages based on Rautmann data

Description

Calculate drift percentages based on Rautmann data

Usage

drift_percentages_rautmann(
  distances,
  applications = 1,
  crop_group_focus = c("arable", "hops", "vines, late", "vines, early", "fruit, late",
    "fruit, early", "aerial"),
  formula = c("Rautmann", "FOCUS"),
  widths = 1
)

Arguments

distances	The distances in m for which to get PEC values
applications	Number of applications for selection of drift percentile
crop_group_focus	One of the crop groups as used in drift_parameters_focus
formula	By default, the original Rautmann formula is used. If you specify "FOCUS", mean drift input over the width of the water body is calculated as described in Chapter 5.4.5 of the FOCUS surface water guidance
widths	The widths of the water bodies (only used in the FOCUS formula)

References

FOCUS (2014) Generic guidance for Surface Water Scenarios (version 1.4). FOrum for the Co-ordination of pesticde fate models and their USe. http://esdac.jrc.ec.europa.eu/public_path/projects_data/focus/sw/docs/Generic%20FOCUS_SWS_vc1.4.pdf

See Also

drift_parameters_focus, PEC_sw_drift

Examples

# Compare JKI data with Rautmann formula
# One application on field crops, for 1 m, 3 m and 5 m distance
drift_data_JKI[[1]][as.character(c(1, 3, 5)), "Ackerbau"]
drift_percentages_rautmann(c(1, 3, 5))
drift_percentages_rautmann(c(1, 3, 5), formula = "FOCUS")

# One application to early or late fruit crops
drift_data_JKI[[1]][as.character(c(3, 5, 20, 50)), "Obstbau frueh"]
drift_percentages_rautmann(c(3, 5, 20, 50), crop_group = "fruit, early")
drift_percentages_rautmann(c(3, 5, 20, 50), crop_group = "fruit, early",
  formula = "FOCUS")
drift_data_JKI[[1]][as.character(c(3, 5, 20, 50)), "Obstbau spaet"]
drift_percentages_rautmann(c(3, 5, 20, 50), crop_group = "fruit, late")
drift_percentages_rautmann(c(3, 5, 20, 50), crop_group = "fruit, late",
  formula = "FOCUS")

# We get a continuum if the waterbody covers the hinge distance
# (11.4 m for 1 early app to fruit)
x <- seq(3, 30, by = 0.1)
d <- drift_percentages_rautmann(x, crop_group = "fruit, early", formula = "FOCUS")
plot(x, d, type = "l",
  xlab = "Distance of near edge [m]", 
  ylab = "Mean drift percentage over waterbody width",
  main = "One application to fruit, early")
abline(v = 11.4, lty = 2)

jranke/pfm documentation built on March 14, 2024, 3:18 a.m.