2011 Bureau of Agrichemical Management Annual Report

​Pesticide Special RegistrationPesticide special registration program highlights 2011

Normally, pesticides are federally registered with the U.S. Environmental Protection Agency (EPA) and labeled for use in specific locations (such as weed control in cranberries) with specific directions and restrictions. However, sometimes crop producers and other pesticide users encounter pest problems that cannot be sufficiently managed using available EPA-registered pesticides with the corresponding directions and restrictions. Examples of such pest problems include: a pest developing resistance to existing pesticides, unexpected weather resulting in increased pest populations, the cancellation of previously effective pesticides, or the emergence of a new pest for which existing pesticides are not effective or not labeled for use in the needed locations. 

The WDATCP Pesticide Special Registrations program responds to emergency and non-emergency pest management needs of Wisconsin’s agricultural producers and others. Most requests pertain to minor food crops, such as cranberries and ginseng, where effective pesticide products are not yet available. 

Emergency requests are prepared and submitted to WDATCP by technical experts, typically crop/pest researchers at the University of Wisconsin. Non-emergency requests are prepared and submitted by pesticide manufacturers or labelers, with the assistance of technical experts. If a request is authorized, pesticide users must obtain, and have in their possession at the time of application, authorized special use directions to legally use pesticide products for the requested purposes.

The department processes requests for two types of requests: emergency exemptions and special local need (SLN) registrations. 

  • Emergency exemptions are authorized directly by the U.S. Environmental Protection Agency (EPA) under section 18 of the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA). They provide time-limited use of specific pesticide products to manage urgent, non-routine pest situations for which there are no sufficient, available EPA-registered pesticides available. Section 18 emergency exemptions are intended to prevent significant economic loss, prevent significant health risks posed to humans or other animals, or address crises of imminent threat. For food or feed uses, EPA establishes time-limited tolerances that allow certain amounts of the pesticide to be present in or on the food or feed. Emergency exemptions are authorized for up to one year at a time. 

  • SLN registrations are authorized directly by WDATCP under ch. ATCP 29.72, Wis. Adm. Code and section 24(c) of FIFRA and subsequently reviewed by EPA. This type of special request is intended to meet a special local need in Wisconsin, which is a current or imminent pest problem that cannot be adequately controlled by the use of any available federally-registered pesticide product. SLN registrations are authorized for up to five years at a time. 

Visit this web page for a list of Section 18 emergency exemptions​ and Section 24(c)/SLN registrations currently authorized for Wisconsin. 

Direction for the Coming Year

The program is developing application materials for special registrations to provide applicants better guidance about what is needed in the applications. More consistent and complete applications will also expedite the department's review process. The first item to be developed will be an application form and instructions for Section 24(c)/SLN registrations.

The program will also continue to respond to incoming requests related to new and expired authorizations. The program will revise its webpages with information related to Section 18 and 24(c) procedures. 


For more information about any of the bureau programs you may email the department.

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