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Join Stone at the American Chemical Society's Fall 2026 Meeting

Jul 24, 2026

Stone is excited to again be sponsoring and participating in the American Chemical Society's (ACS) Fall 2026 Meeting, from Sunday, August 23, to Thursday, August 27, 2026, in Chicago.

We have long supported the conference, and our employee-owners are eager to share another year's worth of experience in multiple presentations covering a range of crop protection-related topics, pollinator risk assessment and data analysis, and the use of machine learning in safety assessments. We'll also be a sponsor for the conference's AGRO program.

See the table below for a list of presentations with links to detailed descriptions. Feel free to connect with our employee-owners attending ACS: Ben Brayden; Jonnie Dunne; Tim Dupuis; John Hanzas; Jacob Mitchell; Dwayne Moore; Hendrik Rathjens; Jody Stryker; and Michael Winchell.

 

Click on Presentation title for more information

Authors

Date, Time, and Place

Session: Pollinator Risk Assessment Methods and Data Analysis Approaches in a Tiered Risk Assessment System

 

Using Pollinator Mobility Data in Precision Application Risk Assessments: A Case Study with Lepidopterans (4541328)

Presenter: Dwayne Moore, Stone Environmental.

Co-Authors: R. Scott Teed, Stone Environmental; Amund Løvik; Charlotte Elston.

Monday, August 24,

10:20 - 10:45 a.m., EDT

Room: S502b McCormick Place Convention Center

Session: Precision Application of Agricultural Pesticides in the Digital Age

Tiered Framework for Environmental Exposure Assessment of Precision Pesticide Applications (4541048)

Presenter: Hendrik Rathjens, Stone Environmental.

Co-Authors: Olivier de Cirugeda Helle; Neil Mackay; Sebastian Multsch; Dirk Nickisch; David Patterson; Jörn Strassemeyer; Robin Sur; Bernhard Gottesburen.

Monday, August 24,

4:20 - 4:45 p.m. EDT

Room: S503a McCormick Place Convention Center

Session: Applications of Machine Learning and Large Language Models in Pesticide Safety Assessments

 

Random Forest Modeling of Drift Interception by Plant Species (4533374)

Presenter: Jonnie Dunne, Stone Environmental.

Co-Authors: Jens Kiesel, Stone Environmental; Michael Winchell, Stone Environmental; Milos Zaric; Jeff Golus; Richard Brain.

Monday, August 24,

5:40 - 6:05 p.m., EDT

Room: S502b McCormick Place Convention Center

 

Agricultural BMPs, Water Quality, and Pesticide Risk Assessment: A Machine Learning Framework for Watershed-Scale Mitigation Effectiveness Evaluation (4532577)

Presenter: Hendrik Rathjens, Stone Environmental.

Co-Authors: Jens Kiesel, Stone Environmental. Richard Brain; Wenlin Chen.

Monday, August 24,

6:05 - 6:30 p.m., EDT

Room: S502b McCormick Place Convention Center

Session: Environmental Fate, Transport, and Modeling of Agriculturally Related Chemicals 

 

Dicamba and 2,4-D Levels in Midwestern United States Rainwater in 2022 and 2023 (4532262)

Presenter: Sara Whiting.

Co-Authors: Lance Shuler; Naresh Pai; Allen Olmstead; Brent Toth; Jacob Mitchell, Stone Environmental; Karla Gage; Scott Nolte; Reid Smeda.

Monday, August 24,

12:05 - 12:30 p.m., EDT

Room: A2 – South Hall ChemPod 1 McCormick Place Convention Center

 

Method Development and Application of a Geospatial Refinement Approach to Pesticide Aquatic Exposure Modeling and Risk Assessment for Endangered Species (4544136)

Presenter: Michael Winchell, Stone Environmental.

Co-Authors: Hendrik Rathjens, Stone Environmental; Scott Teed, Stone Environmental; Christopher Holmes; Ralph Warren; Huajin Chen; Patrick Havens; Tilghman Hall; Paul Whatling; Rebecca Haynie.

Monday, August 24,

5:40 - 6:05 p.m., EDT

Room: A2 – South Hall ChemPod 1 McCormick Place Convention Center

 

Geospatial Refinement of Terrestrial Pesticide Plant Exposure for Endangered Species Risk Assessments (4542596)

Presenter: Michael Winchell, Stone Environmental.

Co-Authors: Hendrik Rathjens, Stone Environmental; Scott Teed, Stone Environmental; Ralph Warren; Eric Henry; Christopher Hassinger.

Monday, August 24,

6:30 - 6:55 p.m., EDT

Room: A2 – South Hall ChemPod 1 McCormick Place Convention Center

Session: Unmanned Aerial Systems (aka Drones): Pesticide Spraying and Other Agricultural Applications

 

Investigation of Batch-Specific Recovery Variability in Commonly Used Sample Media for UAV Spray Drift Studies (4535841)

Presenter: Tim Dupuis, Stone Environmental.

Co-Authors: Brent Toth; Frank Donaldson; Rajeev Sinha; Andrew Hewitt.

Thursday, August 27,

9:05 - 9:30 a.m., EDT

Room: S503a McCormick Place Convention Center

Key Factors Affecting Drift Deposition from Unmanned Aerial Vehicle Applications (4541708)

Presenter: Dwayne Moore, Stone Environmental.

Co-Author: Sebastian Castro-Tanzi.

Thursday, August 27,

9:30 - 9:55 a.m., EDT

Room: S503a McCormick Place Convention Center

Comparison of Spray Deposition from Ground and Unmanned Aerial Vehicle Pesticide Applications in a Multi-Location Field Experiment (4541629)

Presenter: Dwayne Moore, Stone Environmental.

Co-Authors: Michael Winchell, Stone Environmental; Sebastian Castro-Tanzi; Bradley Fritz.

Thursday, August 27,

9:55 - 10:20 a.m., EDT

Room: S503a McCormick Place Convention Center

Session: Protection of Agricultural Productivity, Public Health, and the Environment

 

Simulating Integrated Environmental and Agronomic Outcomes in Vermont Agricultural Systems, with an APEX-Based Decision Support Tool (4541673)

Presenter: Jody Stryker, Stone Environmental.

Co-Authors: Hannah Rubin, Stone Environmental; Jens Kiesel, Stone Environmental; Michael Winchell, Stone Environmental.

Thursday, August 27,

9:55 - 10:20 a.m., EDT

Room: S502a McCormick Place Convention Center