An application rate in l/ha or kg/ha is calculated from information on dosage (product concentration in the application solution), application volume, or directly from the product application rate. This is complicated by the fact that a rate ("expenditure" in the XML file) with units l/ha can refer to the application solution or to the liquid product.
Usage
product_rates(
product_uses,
aggregation = c("max", "mean", "min"),
skip_l_per_ha_without_g_per_L = FALSE,
fix_l_per_ha = TRUE
)Arguments
- product_uses
A tibble containing the columns 'pNbr', 'use_nr', 'application_area_de', 'min_dosage', 'max_dosage', 'min_rate', 'max_rate', from the 'uses' table in a srppp_dm object, as well as the columns 'percent' and 'g_per_L' from the 'ingredients' table in a srppp_dm object and 'culture_de' from the 'cultures' table in srppp_dm object.
- aggregation
How to represent a range if present, e.g. "max" (default) or "mean".
- skip_l_per_ha_without_g_per_L
Passed on to
application_rate_g_per_ha, but here, the default is FALSE, there it is TRUE.- fix_l_per_ha
During the review of the 2023 indicator project calculations, a number of cases were identified where the unit l/ha specifies a water volume, and not a product volume. If TRUE (default), these cases are corrected, if FALSE, these cases are discarded.
Details
In some cases (currently one), external information was found, indicating that the "expenditure" is an application volume l_per_ha_is_water_volume.
Note
A reference application volume is used if there is no 'expenditure'. It is selected only based on the product application area and culture.
Examples
# \dontrun{
library(srppp)
library(dplyr, warn.conflicts = FALSE)
library(dm, warn.conflicts = FALSE)
sr <- srppp_dm()
#> Warning: URL 'https://www.blv.admin.ch/dam/blv/de/dokumente/zulassung-pflanzenschutzmittel/pflanzenschutzmittelverzeichnis/daten-pflanzenschutzmittelverzeichnis.zip.download.zip/Daten%20Pflanzenschutzmittelverzeichnis.zip': Timeout of 60 seconds was reached
#> Error in download.file(from, path, quiet = TRUE): cannot open URL 'https://www.blv.admin.ch/dam/blv/de/dokumente/zulassung-pflanzenschutzmittel/pflanzenschutzmittelverzeichnis/daten-pflanzenschutzmittelverzeichnis.zip.download.zip/Daten%20Pflanzenschutzmittelverzeichnis.zip'
product_uses <- sr$products |>
filter(name == "BIOHOP AudiENZ") |>
left_join(sr$uses, by = "pNbr",
relationship = "many-to-many") |>
left_join(sr$cultures, by = c("pNbr", "use_nr"),
relationship = "many-to-many") |>
left_join(sr$ingredients, by = c("pNbr"),
relationship = "many-to-many") |>
select(name, pNbr, use_nr,
min_dosage, max_dosage, min_rate, max_rate, units_de,
application_area_de, culture_de, pk, percent, g_per_L)
#> Error: object 'sr' not found
product_rates(product_uses, aggregation = "max") |>
select(pNbr, name, culture_de, application_area_de,
max_prod_rate=prod_rate, prod_unit) |>
print(n = 10)
#> Error: object 'product_uses' not found
# }