Captan Registration Review Focus Meeting

Agenda

EPA/USDA/Captan Registrants

Potomac Yard South Room 9100

September 23, 2013

2:30 – 4 pm 

I. Background and Introductions

II. Registration Review Schedule, Process, and Data Requirements

a. Final Work Plan – Nov 2013

b. Registration Review DCI – Jan-March 2014

III. Clarification of Use Patterns

a. Label clarification – treatment intervals, maximum application rates, etc. 

b. Turf and Ornamentals

i. Current use on turf

ii. “Lawn seed beds”

iii. Turf labels must comply with the 2004 Captan RED Amendment

c. Dichondra – labels must be amended to comply with RED & Amendment

d. Greenhouse benches*

e. Antimicrobial Uses

f. Possible Label Amendments & Timeframe

IV. Anticipated Data Requirements and DCI

a. Conventional vs. Antimicrobial Uses

b. Schedule for Issuance of DCI

V. Summary and Next Steps 

*Greenhouse benches are listed as a use site on labels for EPA registered products 66222-66, 

191713-325, 42750-236, 66330-24, 19713-156, 19713-362, 19713-385, and 66330-209.
September 23,2013 

Captan Registration Review Focus Meeting 

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Captan Focus Meeting Notes

Potomac Yard South, Room S-9100 

September 23, 2013

2:30 – 4:00 pm

Attendees

Registrants: 

Captan Task Force (CTF) - Claire Iorizzo (Coordinator)

Makteshim Chemical Works (MCW) - Adi Azmon and Rob Everich

Makteshim-Agan of North America (MANA) - Kristen Knox and Jonathan Janis

Arysta - Jim Barron and Anna Wilkens 

Waterborne Environmental - Greg Hancock (Consultant to CTF)

Wagner Regulatory Associates - Cheryl Wagner (Agent for RedEagle)

Albaugh - Morris Gaskins

United Phosphorus - Sherry Hutcheson 

Environmental Protection Agency (EPA or the Agency): 

Pesticide Re-evaluation Division (PRD) - Christina Scheltema, Tracy Perry, and Mike Goodis

Environmental Fate and Effects Division (EFED) - Faruque Khan, Robin Sternberg, and Sujatha Sankula 

Health Effects Division (HED) - Bonnie Cropp-Kohlligian, Ayaad Assaad, Jessica Kidwell, and Elissa 

Reaves

Antimicrobials Division (AD) - Donna Randall, Marshall Swindell, and Seiichi Murasaki

Registration Division (RD) - Dominic Schuler 

USDA: Julius Fajardo, Office of Pest Management Policy

Objective

The purpose of the meeting was for members of EPA’s Captan Registration Review Team to meet with 

the captan registrants and USDA to discuss the registration review schedule, process, and data 

requirements, as well as the following aspects of the captan registration review: 

Clarification of use patterns, especially for turf and ornamentals, greenhouse bench treatment, and 

antimicrobial uses,

Discussion of label amendments to comply with the terms of the 2004 Captan RED Amendment,

Clarification of registrant support for antimicrobial uses, and

Development of a master label and timing of label amendments. 

Discussion

Presentation by Captan Task Force. Jim Barron of the Captan Task Force walked through a set of 

PowerPoint slides (attached). This presentation provided a broad overview of the history of the captan

registration, general use patterns, and available formulations. The Task Force presentation also clarified 

captan use on lawn seed beds, dichondra, and use as a greenhouse bench treatment. 
Maximum Application Rates, Frequency, and Timing of Application. The EPA registration review team 

has requested clarification of this information for all registered uses of captan. During the meeting, EPA 

emphasized the importance of cleaning up the captan labels and developing a master label prior to 

initiation of the risk assessment phase of the captan registration review. The Agency will rely on 

registrants to pull together a master label. However, the Captan Task Force stated that with > 100 captan 

end-use products, gathering this information will be extremely difficult. The Task Force is currently 

comprised of three companies: MANA, MCW, and Arysta. Although EPA looks to registrants to 

develop a master label, the Agency can assist by sending a letter to all captan end-use registrants 

regarding necessary label changes or clarifications. 

Meeting participants discussed the following use patterns in detail: 

Characterization of Use on Turf. Meeting participants discussed use of captan on turf. EPA 

mentioned that some of the turf labels are unclear regarding the turf use. The Agency reiterated 

the restrictions on this use specified in the 2004 Captan RED amendment, stated below:

“Do not apply to residential lawns.” (RED amendment*, p. 29)

“Do not apply to turfgrass in residential sites, including homes, apartment buildings, 

daycare centers, schools, playgrounds, parks, recreational areas, sports fields, or other 

residential areas.” (RED amendment, p. 28) 

In addition, the captan registrants asked for clarification of restrictions for captan use on sod 

farms. 

Registrant Support of Antimicrobial Uses. All of the captan technical labels currently allow 

formulation into end-use products for antimicrobial uses. EPA expects to levy data requirements 

for these uses in the Registration Review DCI, and would like to clarify registrant support for 

antimicrobial uses of captan early in the registration review process. Registrants had some general 

questions about the antimicrobial use. 

USDA Comments. The USDA representative mentioned the importance of captan in fungicide resistance 

management in U.S. agriculture. Captan is a multi-site fungicide that is effective against pathogens that 

have developed resistance to several single-site fungicides used in a given crop (multifungicide 

resistance) thereby managing resistant fungal populations.

Follow Up Items

Clarification of maximum application rates, frequency, and timing of application for all captan 

uses.

Development of a captan master label.

Label amendments to ensure compliance with the 2004 RED amendment, especially for use on 

turf.