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Technical Documentation of PestSurf, a Model describing Fate and Transport of Pesticides in Surface Water for Danish Conditions

Appendix A

1 Measured and Fitted Wind Drift Curves

For agricultural crops:

  Distance deposition, % of appl. Dose
m measured model
0   25.70
1 3.51 3.51
2 1.24 1.23
3 0.98 1.02
4 0.94 0.90
5 0.75 0.76
7.5 0.42 0.44
10 0.33 0.32
15 0.2 0.19
20 0.12 0.13
30 0.11 0.11

drift, agricultural crops

For apples:

Distance early stages late stages
m Measured Model Measured Model
1   34.3   23.0
2   30.3   18.9
3 29.6 26.6 15.5 15.5
4   23.5   12.8
5 19.5 20.7 10.1 10.5
7.5 14.1 15.0 6.4 6.4
10 10.6 11.0 4.4 4.1
15 6.2 6.7 2.5 2.5
20 4.2 4.0 1.4 1.5
30 2.0 1.5 0.6 0.6
40 0.4 0.5   0.2
50 0.2 0.2   0.1

figure

For Spruce:

The final equation is the average of the fitted curves for early and late wine.

Distance late vines early vines
m measured model measured model
1.0   19.7   29.4
1.1   17.0   25.8
1.2   14.8   23.0
1.3   13.1   20.7
1.4   11.7   18.7
1.5   11.1   17.9
3.0 3.6 3.6 6.8 6.8
5.0 1.6 1.6 3.4 3.4
7.5 0.9 0.9 2.0 2.0
10.0 0.6 0.6 1.4 1.4
15.0 0.3 0.3 0.8 0.8
20.0 0.2 0.2 0.5 0.5


figure

 

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Version 1.0 Maj 2004, © Danish Environmental Protection Agency