Annex
Treatment: Sulfur dioxide and carbon dioxide fumigation and cold treatment schedules
Effective 15 October 2021 to 10 August 2022SO2/CO2 fumigation plus cold treatment for the management of spotted wing drosophila (Drosophila suzukii) on table grapes from China
Preshipment fumigation with SO2/SO2 followed by cold treatment (undertaken either preshipment or in-transit).
The fumigation must be undertaken as per the following: 6% carbon dioxide (CO2) and 1% sulfur dioxide (SO2) by volume for 30 minutes, at a pulp temperature of 15.6°C or higher at not more than 33% chamber load.
The cold treatment may be performed preshipment or in-transit under one of the following schedules:
- for six days or more at a pulp temperature of -0.5°C ± 0.5°C or lower.
Note: The cold treatment can only commence once the fruit pulp temperature reaches the set point for treatment of -0.5°C or below. The pulp temperature must not exceed 0.0°C for the duration of the treatment. - for 12 days or more at a pulp temperature of 0.9°C ± 0.5°C or lower.
Note: The cold treatment can only commence once the fruit pulp temperature reaches the set point for treatment of 0.9°C or below. The pulp temperature must not exceed 1.4°C for the duration of the treatment.