Development of Generic Irradiation Doses for Quarantine Treatments

Closed for proposals

Project Type

Coordinated Research Project

Project Code




Approved Date

11 December 2008


3 - Active - Ongoing

Start Date

11 June 2009

Expected End Date

11 June 2014

Completed Date

28 July 2015

Participating Countries

South Africa
Syrian Arab Republic
United Kingdom of Great Britain and Northern Ireland
United States of America
Viet Nam


Regulatory authorities and scientists from many internationally recognised institutions have studied research data on the effectiveness of irradiation as a quarantine treatment against a large range of insect pest species infesting various fruits and vegetables and have concluded the following: A specific irradiation dose that has been shown scientifically to inactivate a species of quarantine importance in various commodities will also inactivate all related arthropod species within that genus and negate the need to develop or validate specific irradiation doses tailored to individual arthropod species. The project will establish validated irradiation doses for non fruit fly species of quaarntine significance. The project results will strengthen existing irradiation standards developed by the International Plant Protection Convention. It will help international trade if Member States accept generic irradiation doses for a wide range of quarantine pests.


The overall objective of the CRP is to validate generic treatment doses for groups of arthropods of quarantine significance in international trade. Secondary objectives include an examination of the effects of low oxygen commodity storage and dose rate on efficacy and commodity tolerances. Research may result in a reduction in the existing 400 Gy dose levels for Insecta (except for pupae and adults of Lepidoptera). The work will assist setting doses for the phylum Arthropoda and a few subgroups within that phylum as well as specific minimum doses that provide quarantine security against pests in various commodities.

Specific objectives

Research on specific non fruit fly pest species or groups will be conducted at different locations by researchers using practices that are adequate for phytosanitary applications of irradiation, such as accurate, traceable dosimetry, acceptable pest-rearing methods and precise determinations of efficacy. Efficacy under commercial conditions of oxygen stress, whether intentional or passive, will be tested for certain applications. Tolerance of specific commodities under various commercial conditions will also be conducted.

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