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Assessing the validity of current approaches for calculating off-crop exposure to pesticides - PS2001

This project aims to assess the validity of the risk assessment approach defined in ESCORT 2 for off-crop exposure to pesticides from spray drift. This will be undertaken by considering the underlying physical mechanisms, comparing with data in the literature and obtaining a limited data set to support the conclusions. An evaluation of the sensitivity of the calculation to application and environmental variables will also be undertaken. The report will contain recommendations for an alternative approach and the research needed to define it.

This work will make a step towards Defra’s policy objective of assessing the risk to the environment from the application of plant protection products.
1. Compare predicted environmental concentrations using the ESCORT approach with those estimated from measured data.
2. Assess the sensitivity of the measured environmental concentration to a limited set of application variables
3. Estimate the effect of vegetation between crop and measurement point and the sensitivity to vegetation type
4. Assess the validity of the ESCORT approach to UK conditions in the light of these sensitivities. Propose any necessary modifications and future work required to ensure the modified approach is robust.
Project Documents
• Final Report : Assessing the validity of current approaches for calculating off-crop exposure to pesticides   (4197k)
Time-Scale and Cost
From: 2002

To: 2003

Cost: £38,540
Contractor / Funded Organisations
Silsoe Research Institute (BBSRC)
Environmental Effects              
Environmental Protection              
Pesticide use              
Fields of Study
Pesticide Safety