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The BROWSE model for predicting exposures of residents and bystanders to agricultural use of plant protection products: An overview

Lookup NU author(s): Professor Lynn FrewerORCiD



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


New models have been developed, with the aim of improving the estimate of exposure of residents and bystanders to agricultural pesticides for regulatory purposes. These are part of a larger suite of models also covering operators and workers. The population that is modellled for residents and bystanders relates to people (both adults and children) who have no association with the application (i.e. not occupational exposure) but are adjacent to the treated area during and/or after the application process. The scenarios that the models aim to describe are based on consideration of both best practice and of real practice, as shown in surveys and from expert knowledge obtained in stakeholder consultations.The work has focused on three causes of exposure identified as having potential fro improvement :boom spayers, orchard sprayers and vapour emissions.An overview of the models is given, and a description of model input values and proposed defaults, The main causes of uncertainty in the models are also discussed. There are a number of benefits of the BROWSE model over current models of bystander and resident exposure, which includes the incorporation off mitigation measures for reducing exposure and the use of probabilistic modelling to avoid an over-conservative approach. It is expected that the levels of exposure that the BROWSE model predicts will, in some cases, be higher than those predicted by the current UK regulatory model. This is largely because the modelled scenarios have been updated to account for current practice and current scientific knowledge.

Publication metadata

Author(s): Ellis MCB, van de Zande JC, van den Berg F, Kennedy MC, O'Sullivan CM, Jacobs CM, Fragkoulis G, Spanoghe P, Gerritsen-Ebben R, Frewer LJ, Charistou A

Publication type: Article

Publication status: Published

Journal: Biosystems Engineering

Year: 2017

Volume: 154

Pages: 92-104

Print publication date: 21/02/2017

Online publication date: 01/09/2016

Acceptance date: 21/07/2016

Date deposited: 23/02/2017

ISSN (print): 1537-5110

ISSN (electronic): 1537-5129

Publisher: Academic Press


DOI: 10.1016/j.biosystemseng.2016.08.017


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