SUMMARY
This pest risk analysis report recommends that stone fruit from New Zealand be allowed entry into Western Australia subject to phytosanitary measures for citrophilus mealybug, leafrollers, oriental fruit moth, thrips and biological control agents (phytoseiid mites). These pests will require the use of risk management measures, in addition to New Zealand’s standard commercial production practices, to reduce the risk to a very low level to meet Australia’s appropriate level of protection (ALOP).
A combination of risk management measures and operational systems will reduce the risk associated with the importation of stone fruit from New Zealand to meet Australia’s ALOP, specifically:
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pest free area or area of low pest prevalence or methyl bromide fumigation for oriental fruit moth;
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inspection and remedial action for citrophilus mealybug, leafrollers, thrips and biological control agents (phytoseiid mites); and
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supporting operational systems to maintain and verify phytosanitary status.
New Zealand requested market access for stone fruit (apricot, cherry, nectarine, peach and plums) into Western Australia in 2000.
Biosecurity Australia has considered the importation of stone fruit into Western Australia as an extension of existing policy. This existing policy includes policy for the importation into Western Australia of cherry fruit from South Australia (completed in September 2001), from New Zealand (completed in January 2003) and from Tasmania (completed in January 2004) and subsequently apricot fruit from South Australia and Tasmania (completed in October 2004).
Detailed risk assessments were conducted for those pests that were categorised as quarantine pests for Western Australia, to determine unrestricted risk estimates for each organism. For those pests for which the unrestricted risk was estimated to be above Australia’s ALOP, risk management measures were identified and selected.
Consultation with Biosecurity New Zealand and the Department of Agriculture and Food Western Australia, and input from stakeholders on the draft import conditions, has resulted in a set of final risk management measures, operational procedures and import conditions, together with their objectives.
Biosecurity Australia has made a number of changes in the risk analysis following considerations of stakeholder comments on the draft report for the Extension of Existing Policy for Stone Fruit from New Zealand into Western Australia. These changes include:
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Inclusion of pest free places of production and pest free production sites as risk mitigation measures for oriental fruit moth;
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The removal of one leafroller (Harmologa oblongana, native leafroller) as it is not found in orchards managed in accordance with the SummerGreen ™ program;
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Minor amendments to the pest categorisation table in light of stakeholder comments, including additional information to justify the assessments. These amendments have had no bearing on the final list of quarantine pests; and
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Inclusion of information about the stone fruit production regions in Western Australia to allow consideration of the consequences for quarantine pests.
1 INTRODUCTION
Biosecurity Australia is a prescribed Agency within the Australian Government Department of Agriculture, Fisheries and Forestry (DAFF) responsible for developing international quarantine policy for imports and for liaising with overseas National Plant Protection Organisations (NPPOs) to determine their technical requirements for exports of Australian plants and plant products.
Quarantine policy for the importation of stone fruit from New Zealand into Australia has been in place since 1984. However, stone fruit has not been permitted into Western Australia from either New Zealand or other states and territories of Australia in the absence of suitable phytosanitary measures to mitigate the risk of the introduction into Western Australia of the brown rot diseases of stone fruit, caused by Monilinia fructicola and M. laxa.
The quarantine status of the brown rot diseases of stone fruit changed for Western Australia when the presence of both M. fructicola and M. laxa was confirmed in 1999. Following confirmation of brown rot in Western Australia, New Zealand requested access for stone fruit (apricot, cherry, nectarine, peach and plums) into Western Australia in 2000.
Following a comparison of the phytosanitary status of the commodities under consideration with those currently allowed entry into Western Australia, Biosecurity Australia determined that it was appropriate for New Zealand’s market access request for stone fruit to Western Australia to be progressed as an extension of existing policy. The existing policy includes policy for the importation into Western Australia of cherry fruit from South Australia (completed in September 2001), from New Zealand (completed in January 2003) and from Tasmania (completed in January 2004) and subsequently apricot fruit from South Australia and Tasmania (completed in October 2004).
This pest risk analysis for New Zealand stone fruit to Western Australia has been prepared with the assistance of the New Zealand Ministry of Agriculture and Forestry (NZ MAF) and the Department of Agriculture Western Australia.
In the pest risk analysis (PRA) process for stone fruit from New Zealand into Western Australia, Biosecurity Australia first categorised the pests associated with stone fruit from New Zealand to identify the quarantine pests for Western Australia. The likelihood of entry, establishment or spread and associated potential consequences were then assessed to arrive at an unrestricted risk estimate for each quarantine pest.
Risk management measures, in addition to the standard commercial practices, were then identified for each quarantine pest that was above the appropriate level of protection (ALOP) for Australia and used to develop proposed import conditions.
This document includes the following sections:
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background to this pest risk analysis;
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method for pest risk analysis;
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results of pest categorisation and pest risk assessments;
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proposed pest risk management; and
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import conditions.
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