Welcome to FRAC

Fungicides have become an integral part of efficient food production. The loss of a fungicide to agriculture through resistance is a problem that affects us all.

FRAC works to prolong the effectiveness of fungicides liable to encounter resistance problems and to limit crop losses should resistance appear.

What`s new

  • 01.11.2016

    A Tribute To FRAC Chairman Andy Leadbeater

    Andy Leadbeater, Chairman of the FRAC Steering Committee, passed away at the end of November 2015. Andy was also the Head of Global Product Biology, Fungicides, for Syngenta. Andy was integral in the development of the science of fungicide resistance management as part of his early work monitoring for resistance to the phenylamides at Ciba-Geigy. He participated directly in FRAC activities; first joining the SBI/DMI Working Group and then shortly thereafter joining the QoI Working Group.  He joined the FRAC Steering Committee in 2004 when he took over the chairmanship of the QoI Working Group. Andy became Chair of the FRAC Steering Committee in 2007.  

    Andy was deeply engaged in the development of resistance management and product stewardship strategies across the industry, helping to secure the long-term effectiveness of many fungicide products for growers around the world. He was an ambassador for resistance management, participating on many committees both within Europe and globally and as an invited speaker at many meetings every year. His broad and deep knowledge of plant pathology and crop protection was well respected and will be missed by his FRAC and Syngenta colleagues as well as the many farmers, crop advisors and researchers with which he interacted. 

    We will remember Andy Leadbeater for his technical excellence, his positive outlook no matter the difficulty and his willingness to mentor new practitioners in the field of resistance management.

    Klaus Stenzel, vice chair of the FRAC SC and chairman of the SBI Working group, will be the interim chair of the FRAC Steering Committee until the election of the new chairman at the Steering Committee meeting in Reinhardsbrunn, Germany in April 2016. Helge Sierotzki will be the interim Chair of the QoI working group.

  • 01.10.2016

    2015 Meeting Minutes and 2016 Use Recommendations published for the SBI Working Group

    The SBI Working Group met during the FRAC WG week on Dec. 04, 2015. Summaries of the monitoring results presented during the WG meeting as well as the 2016 use recommendations are published on the SBI WG page (Minutes of the 2015 Meeting, Recommendations for 2016). The general recommendations for cereals were updated (changes are in bold).

  • 08.19.2015

    FRAC Leaflet "Working Together" updated

    The FRAC Leaflet Working Together is a 4 page brochure that provides an overview of FRAC and its initiatives.  It was recently updated to include new working groups/task forces, and new educational initiatives as well as current contact information.  It is an excellent resource to familiarize new people with the goals of FRAC and the resources we can provide.  It is available for download and printing at www.frac.info/publications.


Klaus Stenzel
Vice Chair

Bayer CropScience AG
Alfred-Nobel-Str. 50,
Building 6240
D-40789 Monheim

E-Mail: Dr. Klaus Stenzel

Lisa Hoffman
FRAC Communication and Website Officer

Dupont Crop Protection
S200/122G Stine-Haskell Research Center
1090 Elkton Rd. Newark,
DE 19711-3507

Tel.: +1-302-366-5381
Mobile.: +1-302-256-9472

E-Mail: Lisa Hoffman  

Duncan Mackenzie 2

Duncan McKenzie
Scientific Support Officer


Email: Duncan McKenzie