Minor uses of plant protection products and extrapolation tables
 What are minor uses? Minor uses are those uses of plant protection products (defined in relation to crops and pests) in which either the crop is considered to be of low economic importance at national level (minor crop), or the pest is of limited importance on a major crop (minor pest). It should be noted that a minor use in one country may be a major use in another country (each country is responsible for defining its minor uses). |
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| Limitations in plant protection EPPO countries presently face problems in terms of crop protection product availability for minor crops. The processes of the current EU review of active substances and the rationalization of uses supported by approval holders are removing more and more useful products from the market. As a consequence, there are few products available even for some major uses.This concern was also expressed at our workshop on insecticide resistance in pollen beetle on oilseed rape regarding the impacts on the available resources for resistance management. Therefore, from the EPPO perspective, the minor uses of significance are those for which there are insufficient plant protection product uses, and the focus of the extrapolation work aims to mitigate these limitations. |
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| The development of mitigation strategies and tools In 2003, EPPO published a standard (PP 1/224) describing the principles for determining the requirements for efficacy evaluation for minor uses of plant protection products in a registration procedure. The standard provides a definition of minor uses and guidance on where to seek data to demonstrate effectiveness and crop safety, in order to simplify the registration process. The Standard does not cover other minor use considerations such as residues and ecotoxicology. |
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Minor uses have also become an international issue and cooperation between countries has increased remarkably in recent years. However, coordination between all interested parties still needs to be facilitated and improved. In October 2006, EPPO organized a Workshop on Mutual Recognition of Minor Uses. The workshop addressed problems related to the authorization of minor uses and explored the opportunities for solutions based particularly around different forms of international cooperation, such as mutual recognition of authorizations and cooperation in data generation (view the Workhop conclusions and recommendations). |
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One of main strategies proposed in order to address efficacy data requirements is to extrapolate from extant registered uses, and this was elaborated in a new EPPO standard (PP1/257) published in the Bulletin OEPP/EPPO Bulletin Vol. 37(3), December 2007.
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Extrapolation tables
The extrapolation tables should be used in conjunction with EPPO Standard PP 1/257 Efficacy and crop safety extrapolations for minor uses. The tables provide detailed lists of acceptable extrapolations organized by crop groups for regulatory authorities and applicants in the context of the registration of plant protection products for minor uses. It is important to ensure that expert judgment and regulatory experience are employed when using these tables. EPPO excludes liability as to the reliability of the information provided through these tables.
All extrapolations should be viewed on a case-by-case manner and expert judgment should always be applied when employing these tables.
If you wish to comment on any of the tables below, please contact the EPPO Secretariat directly at hq@eppo.int.
- EPPO Standard PP1/257 - Efficacy and crop safety extrapolations for minor uses
- Crop group definitions (in preparation): this document aims to list all crops that should be encompassed by the groups of crops in the tables developed so far.
Herbicides
| Crop group | Table type | |
Vegetable brassicas |
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Pome fruit |
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Stone fruit |
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Flower bulbs and bulb flowers |
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Bulb vegetables (Allium spp.) |
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Tree nuts |
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Bush fruits |
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| Grass seed crops | Effectiveness | Crop safety |
| Umbelliferous crops | Effectiveness | Crop safety |
| Peas and beans | Effectiveness | Crop safety |
Fungicides
| Crop group | Table type | |
Vegetable brassicas |
Effectiveness | |
Pome fruit |
Effectiveness | |
Stone fruit |
Effectiveness | |
Solanaceae |
Effectiveness | - |
Bulb vegetables (Allium spp.) |
Effectiveness | - |
Flower bulbs and -tubers and bulb- and tuber flower crops |
Effectiveness | - |
| Cucurbitaceae | Effectiveness | - |
Leafy vegetables  |
Effectiveness | - |
| Tree nuts |
Effectiveness | - |
Insecticides
| Crop group | Table type | |
| Vegetable brassicas | Effectiveness | |
| Pome fruit | Effectiveness | |
| Stone fruit | Effectiveness | |
| Solanaceae | Effectiveness | - |
| Bulb vegetables (Allium spp.) | Effectiveness | - |
| Flower bulbs and -tubers and bulb- and tuber flower crops |
Effectiveness | - |
| Cucurbitaceae | Effectiveness | - |
| Leafy vegetables |
Effectiveness | - |
| Tree nuts |
Effectiveness | - |
OECD documents on minor uses Guidance Document on Regulatory Incentives for the Registration of Pesticide Minor Uses OECD Survey on Regulatory Incentives for the Registration of Pesticide Minor Uses: Survey Results OECD Survey on Efficacy & Crop Safety Data Requirements & Guidelines for the Registration of Pesticide Minor Uses: Survey Results Publication of the OECD Guidance Document on Defining Minor Uses of Pesticides Survey of the Pesticide Risk Reduction Steering Group on Minor Uses of Pesticides Report of the OECD Pesticide Risk Reduction Group Seminar on Minor Uses and Pesticide Risk Reduction
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UK Minor Uses Network on Chemicals Regulation Directorate Website
EU
Global Minor Use Portal |
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If you have information on any useful websites related to minor uses, please send details to the EPPO Secretariat.
