Dear Micky,
I would appreciate hearing from anyone who has recently developed (or refined) a Pesticide Risk Indicator, i.e., a method for comparing the relative risks of different pesticides, and/or a method for evaluating trends in pesticide risk over time.
I am also interested in ranking and scoring systems developed for chemicals other than pesticides, but which include measures or indicators for exposure and thus could be adapted for evaluations of pesticide risk. Given that so much work in this field is reported only in the grey literature or not at all, I would also appreciate pointers to systems and applications that I might not otherwise hear about.
The reason for this request is that I am writing an updated and revised review of pesticide impact assessment (a.k.a. risk indicator) systems. My 1997 paper on this topic
An Overview of Pesticide Impact Assessment Systems a.k.a. Pesticide Risk Indicators is posted on the web at www.cfe.cornell.edu/risk/, an earlier version was published in 1998 in the Encyclopedia of Environmental Analysis and Remediation, "Pesticide Ranking by Environmental Impact."
The type of information I am looking for includes:
- Purpose of the system: What / whose perceived need led to development of the system?
- Who are intended to use and make decisions based on the system: e.g., pesticide applicators, farm advisors, land use planners, regulators, policy analysts, the press, environmental and other public interest groups...
- What is the scale of analysis: e.g., a farm field, a farm, a bioregion, a political jurisdiction (e.g.: a county, state, country), the planet?
- What is the time frame of the analysis: An individual pest control application, the production season, a multi-year time horizon?
- What is the unit of analysis: e.g., a class of pesticides, a pest control product, a pest control method, a pest control as applied to a specific target pest, a farm system, a production scenario, a product?
- Which environmental effects/variables are taken into account: Inherent properties of pest control products and methods, or site and situation-specific parameters as well? Impacts on human health, non-human biota, ecosystem level effects?
- What is the source of input data?
- Does the system assess impacts or behaviors: Does it measure/estimate potential hazards from pest control practices or does it measure and mark the adoption of certain practices, such as organic farming or IPM?
- What are the principles behind the calculation(s), classifications and decision rules? Give details.
- What is the format of the output: Can the results be viewed and used separately from the process of the analysis (as is the case with a ranked or scored listing of of pesticides), or does each user go through the assessment process to produce customized results (i.e.: does a farmer use a workbook or computerized expert system to determine which is the least risk option under situation-specific farm conditions)? Are results displayed on a computer screen as part of an interactive expert system? in a spreadsheet or on a list that is printed on a piece of paper? in a document?...
- Stage of development of the system: Is it still evolving? Is it published? What would be involved in adapting the system for other user groups?
Thanks very much
Dr. Lois Levitan
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