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Field Test




The CASCADE-Drift Model forms an essential first step in the project, as it supplies the input of pesticides into the system of water bodies. The model calculates the amount of spray drift depositing onto the surface water in our pilot region. Many parameters are involved and can be adjusted at will. Day-by-day weather conditions (wind velocity and direction, air temperature and relative humidity) can be selected from a database with real data for the pilot region or can be adapted manually. The spraying technique can be selected, as well as the fields that are to be sprayed on a given day at a given time. The farmer’s choice when to apply a spray is being modelled as well. As an example, the graph shows the pilot region where potato fields are sprayed (hatched areas). The arrow indicates the average wind direction.
The ditches receiving spray drift are shown as thick coloured lines. The amount of spray drift deposits onto these ditches is fed into the CASCADE-TOXSWA model for computing the fate of pesticides

CASCADE drift scheme

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