Create your own conference schedule! Click here for full instructions

Abstract Detail

Crops and Wild Relatives

Farruggia, Frank [1].

Assessing Pesticide Risks to Plants: An overview of EPA's standard approach to plant risk assessments.

The Environmental Protection Agency’s Office of Pesticide Programs conducts environmental fate and ecological risk assessments to evaluate potential exposure and subsequent risks from pesticides to plants inhabiting terrestrial and aquatic habitats. Currently, the Agency uses the TerrPlant, AgDRIFT, and PRZM-VVWM models to estimate off-site runoff and spray drift exposures to plants inhabiting dry-land, semi-aquatic, and aquatic habitats adjacent to treatment sites. The Agency then relies on required standardized toxicity tests and other published literature to evaluate the potential risks of the modeled environmental exposures to plants. Based upon these data, models and the pesticide label information, the Agency develops a risk assessment characterizing the potential risks to plants. When risks to terrestrial and/or aquatic plants are expected after application of a pesticide, the Agency may consider additional data, refinements to the exposure, or additional lines of evidence to better characterize these risks. Some of these considerations may include the comparison of the assessed chemical against other chemicals with the same or similar intended uses. These comparisons allow the Agency to consider the relative risk of one chemical against another. Additionally, the Agency may refine assessments by considering: 1) species sensitivity distributions, reproduction and/or plant injury measures of effect, or alternative modeling tools; 2) increased resolution of the geospatial distributions of risks; and 3) consideration of the impact of reduced spray drift through the evaluation of data for drift reduction technology. An overview of this process, the data and the models that the Agency uses, and insight into considerations when evaluating risks to terrestrial and aquatic plants will be presented.

Log in to add this item to your schedule

1 - Environmental Fate & Effects Division Office Of Pesticide Programs, U.S. Environmental Protection Agency, 1200 Pennsylvania Avenue, N.W., Mail Code: 7507P, Washington, DC, 20460, United States

none specified

Presentation Type: Oral Paper
Session: CWR1, Crops and Wild Relatives
Location: Tucson D/Starr Pass
Date: Wednesday, July 31st, 2019
Time: 11:45 AM
Number: CWR1015
Abstract ID:1338
Candidate for Awards:None

Copyright © 2000-2019, Botanical Society of America. All rights reserved