Annex

Commodity

Pest

Treatment

All fresh produce

Fruit flies or suspected fruit flies (eggs, larva, pupa, adults) or consignments with suspected high impact pests (e.g. Drosophila suzukii, citrus psyllid) or high incidence of disease symptoms must be held until OSS receives and assesses specimens in the laboratory.

Secure consignment and seek further advice from OSS in conjunction with Plant Import Operations.

Allium bulbs
e.g. garlic bulbs, onion bulbs, shallot bulbs

Any invertebrate pests

The methyl bromide rate required is 40g/m³ for three hours at 21ºC or above at Normal Atmospheric Pressure (NAP).

Citrus fruit

Serpentine/Peelminer (Mamara sp.)

Willow is the preferred host but where populations are high it will attack citrus hosts. If live Serpentine miners are found in the rind of citrus fruit then the consignment should be fumigated with methyl bromide at 48g/m³ for two hours at 21°C or above at Normal Atmospheric Pressure (NAP) with a minimum concentration of 32g/m³ at the end of the treatment period.

Citrus fruit

External invertebrate pests

e.g. ants, beetles, mealybugs, mites, scale, spiders, thrips

The methyl bromide rate required is 32g/m³ for two hours at 21ºC or above at Normal Atmospheric Pressure (NAP) with 80% gas retention required (i.e. no lower than 25.6g/m³at the end of the treatment period).

Coconuts

External invertebrate pests

e.g. ants, beetles, mealybugs, mites, scale, spiders, thrips

The methyl bromide rate required is 32g/m³ for three hours at 21ºC or above at Normal Atmospheric Pressure (NAP).

Coconuts

Internal invertebrate pests

The methyl bromide rate required is 32g/m³ for 24 hours at 21ºC or above at Normal Atmospheric Pressure (NAP).

Cut flowers

External invertebrate pests

e.g. ants, beetles, mealybugs, mites, scale, spiders, thrips

The methyl bromide rate required is 32g/m³ for two hours at 21ºC or above at Normal Atmospheric Pressure (NAP) with 80% gas retention required.

Fresh produce, including leafy Allium vegetables

External invertebrate pests

e.g. ants, beetles, mealybugs, mites, scale, slugs, spiders, thrips

The methyl bromide rate required is 32g/m³ for two hours at 21ºC or above at Normal Atmospheric Pressure (NAP) with 60% gas retention required (i.e. no lower than 19.2g/m³at the end of the treatment period).

Fresh produce

Internal pests (excluding fruit flies, Drosophila suzukii)

The general internal rate treatment is methyl bromide 32g/m³ for three hours at 21ºC or above at Normal Atmospheric Pressure (NAP). Re-inspection post fumigation may be required for some pests on some commodities based on OSS advice (e.g. Navel Orange worm).

Fresh produce

Seed or trash contamination

Refer to the Guideline: Reconditioning of horticultural produce and cut flower consignments

A limited operational tolerance applies to up to two individual seeds (regardless of the type or species) found in an inspection sample of a consignment (i.e. 600 units) and can be waived of any corrective action.

Foliage - Jewish festivals

External pests

e.g. ants, beetles, mealybugs, mites, scale, spiders, thrips

The methyl bromide rate required is 32g/m³ for two and a half hours at 21ºC or above at Normal Atmospheric Pressure (NAP).

Nursery stock - susceptible to methyl bromide

Any invertebrate

For actionable pests that OSS have determined will not be addressed by insecticide dipping, the methyl bromide rate required is:

32g/m³ for two hours at 21ºC or above at Normal Atmospheric Pressure (for actively growing plants)

32g/m³ for two and a half hours at 21ºC or above at Normal Atmospheric Pressure (for dormant non-rooted plants, dormant hardwood cuttings without foliage and dormant budwood without foliage)

32 g/m³ for three hours at 21ºC or above at Normal Atmospheric pressure (for bulbs, corms, tubers or rhizomes).

Root crops

E.g. taro, cassava, yams, ginger.

Any pests, excluding endoparasitic (burrowing) or cyst forming nematodes

The methyl bromide rate required is 32g/m³ for three hours at 21ºC or above at Normal Atmospheric Pressure (NAP).

If endoparasitic or cyst forming nematodes are detected, collect sample and submit to OSS. Place consignment on hold pending further advice from OSS and Plant Import Operations.

Snails on all commodities

Snails

Trials have indicated that the fumigation with methyl bromide at 32g/m³ for two hours at 21°C, (T9030), is effective for control of some species of snails. This treatment should be used for infested material. However, the efficacy of the fumigation must be verified after the treatment to confirm that the snails have been killed. This is achieved by placing the intercepted live snails in a small, vented container (to aid locating the pest after treatment) with a small piece of damp paper towel, then placing the container inside a marked carton prior to fumigation. The marked carton should be placed back in the stack/pallet. Consignments intercepted with snails must not be released after fumigation until a biosecurity officer has checked the marked carton/container to make sure that the snails are dead. Generally, 24 hours after fumigation is recommended before the verification check is undertaken, however if earlier checks reveal treatment efficacy then the consignment may be released.

If snails are found to be alive after fumigation then the consignment can be re-fumigated or held and the snail verified again the following day, at the option of the importer. If survivors are found after re-fumigation, hold the consignment and notify Plant Import Operations, Canberra.