Format for Proposal for Changing Scenario Input Data of FOCUS Groundwater Scenarios

Test results for FOCUS_Drift Calculator_1.1

N.B. Remember that for FOCUS streams spray drift deposition as calculated by the FOCUS Drift Calculator, is multiplied by a factor of 1.2 to account for pesticide mass incoming from the upstream catchment.

1. Spray drift output for test case 1

- application rate: 1000 g ai/ha of FOCUS Compound A-SW

- number of applications: 1

- crop: winter cereals

- type of water bodies: assorted (see below)

- buffer distances: default FOCUS values

Drift results are abstracted two sources: (1) drift calculator in SWASH shell and (2) file “project_name_report.txt” in SWASH PROJECTS/project_name directory. The significant digits listed are the same as listed in each data source.

Crop /
Water body type / Drift
percentile
Source: drift calculator / Spray drift (mg/m2 of surf area)
Source: drift calculator / Spray drift (mg/m2 of surf area)
Source: project report
Winter cereals /
ditch / 90 / 1.9274 / 1.927
Winter cereals /
pond / 90 / 0.2191 / 0.219
Winter cereals /
stream / 90 / 1.4304 / 1.716

2. Spray drift output for test case 2

- application rate: 200 g ai/ha of FOCUS Compound D-SW

- number of applications: 6

- crop: assorted (see below)

- type of water body: assorted (see below)

- buffer distances: default FOCUS values

Drift results are abstracted two sources: (1) drift calculator in SWASH shell and (2) file “project_name_report.txt” in SWASH PROJECTS/project_name directory. The significant digits listed are the same as listed in each data source.

Crop /
water body type / Drift
percentile
Source: drift calculator / Spray drift (mg/m2 of surf area)
Source: drift calculator / Spray drift (mg/m2 of surf area)
Source: project report
Maize /
stream / 70 / 0.1458 / 0.175
Vines – early /
ditch / 70 / 0.2900 / 0.290
Bulb vegetables /
pond / 70 / 0.0254 / 0.025
Spring cereals /
stream / 70 / 0.1682 / 0.202