In light of COVID-19 (coronavirus) and our priority for the health and welfare of our members and staff, ASTM International has decided that it is inadvisable and impractical to hold the committee meetings in Prague on April 27-May 1. The decision was based on several factors, including, but not limited to:

    • Continued review of information and recommendations from the U.S. Centers for Disease Control and Prevention (CDC), the World Health Organization (WHO) and other governmental bodies.
    • Input from our members whose organizations are increasingly concerned with travel and the large gathering in Prague.
    • Watching the expanding trajectory of the coronavirus.

    Staff managers will be contacting committee leaders to plan alternatives for conducting committee business. For any committees that collected money for events, ASTM will work to issue refunds as necessary. Attendees are responsible for cancelling their own hotel reservations.

    Looking forward, we will rely on these and other relevant criteria and input points to assess the status of future scheduled ASTM meetings and events. Please consult our meeting webpage for the most up-to-date information. Thank you for your understanding and continued commitment to ASTM International.

    E35 Pesticides, Antimicrobials, and Alternative Control Agents

    Title: 41st Symposium on Pesticide Formulation and Delivery Systems: Formulation and Application Challenges of Diverse Agricultural Agrochemicals

    Dates: Wednesday November 03 2021 - Thursday November 04 2021

    Location: Virtual; ,

    About The Event

    Technical Program

    Registration Information

    Continuing Education Units

    Technical Chair Contact Information

    Standards Development Meetings

    About the Event

    The 41st Symposium on Pesticide Formulation and Delivery Systems: Formulation and Application Challenges of Diverse Agricultural Agrochemicals that was previously scheduled for October 5-7, 2021 will now be held Wednesday and Thursday, November 3-4, 2021. Sponsored by ASTM Committee E35 on Pesticides, Antimicrobials, and Alternative Control Agents, the symposium will be held as an all virtual event.


    This symposium will provide a forum for the presentation and discussion of formulation and application technologies associated with pesticides, biostimulants, micronutrients, and adjuvant products (agrochemicals). Primary attention will be directed to presentations related to:

    • Regulatory trends impacting agrochemical formulations
    • Formulation technologies to improve agrochemical applications and efficacy
    • Application technologies related to improved pesticide applications and drift reduction
    • Product stewardship, sustainability, and safety
    • Physical and chemical test methods related to crop protection products

    Other topics of interest include but are not limited to; innovate crop protection technologies and innovative application technologies; including UAS delivery systems and aerial application advancements.

    Who Should Attend?

    This Symposium is targeted to individuals and companies involved in the development and/or research of agricultural, turf and ornamental pesticide, biostimulant, and nutritional formulations, chemistries and application and delivery systems in the agricultural and turf and ornamental industries. These entities also tend to be the stakeholders and interested parties.

    The language of the symposium will be English.

    Technical Program

    To view the technical program (presentation times, paper titles, and presenters’ names), click on E35 Technical Program.

    Registration Information

    Registration for this event is now open and will remain open through October 31, 2021. You must be registered to attend this symposium. The fees to attend are listed below.

    Important Note: A registration confirmation email will be sent directly from Webex approximately one week prior to the first day of the symposium to all who have registered by October 25, 2021. The email will contain the link to join the symposium on both days and your unique registration ID that will be needed when joining the event. Those who register after October 25th should allow 1-3 business days to receive the email.

    Presenters – Presenters were already automatically registered for this event and will receive two confirmation emails from Webex approximately one week prior to the start of the first day of the symposium. The emails will contain different links - one for each day - to join the symposium along with your unique registration IDs which may be needed to join the event.

    Students – Students are eligible for a discounted fee, provided they are a full-time student, not employed full time and can provide a current and valid university email address. To register as a student for this symposium, please contact ASTM Symposia Operations at

    Cancellation – A refund of the workshop fee will be honored only if requested at least 10 business days prior to the workshop. To cancel your registration and request a refund, please contact Symposia Operations at or call +1 610-832-9698.

    If you have questions concerning online registration, please contact Symposia Operations at or call +1 610-832-9698. You may also contact ASTM Technical Support at or call 1-877-909-2786 (domestic) or 610-832-9578 (international).

    Continuing Education Units

    Symposium attendees interested in receiving 1.3 Continuing Education Units (CEUs) must attend the entire symposium and complete the symposium CEU application which can be found in the back of the program booklet. Completed applications can be submitted to staff at the ASTM Registration Desk onsite, or they can be emailed to A certificate will be sent electronically to the attendee approximately 4 to 6 weeks after the symposium.

    Technical Chair Contact Information

    Additional information about the symposium is available from Symposium Chair Patrick McMullan, Hocking International Laboratories, Email:, Phone: +1 913-251-2064.

    Standards Development Meetings

    Committee E35 invites you to attend their future standards development meetings. There is no fee to attend these meetings, and membership in ASTM International is not required. For more information the committee and its meeting schedule, please visit Committee E35 Homepage, or email the ASTM Staff Manager, Brian Milewski at

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