Identifying pest risks to Sitka spruce

Melanie Tuffen, Helen Grogan

Industry impact: Sitka spruce is the predominant tree species used in Irish forestry and it is currently relatively free of damaging pests and diseases. An in-depth study identified over 1,000 pests and potential pests of Sitka spruce. A new pest risk analysis (PRA) scheme for Ireland was developed and high-risk species have been identified and subjected to PRA. Spruce bud scale, hemlock looper and nun moth are listed as ‘high-risk’ pests with potential to cause significant damage should they be introduced to Ireland. Measures to reduce the risk of introductions are being considered by the Department of Agriculture, Food and the Marine (DAFM). The PRA scheme was presented to external stakeholders at a meeting held by the DAFM on their plant health strategy. The pest list will be utilised by other European countries, including by an alliance of Nordic countries, investigating threats to their coniferous forestry.

Correspondence: helen.grogan@teagasc.ie

Contribution of non-research stakeholders:

Private and State forestry inspectors and personnel provided knowledge and expertise at stakeholder meetings.

Other contributors and collaborators:

DAFM Plant Health Laboratory, Maynooth University, DAFM Forest Service.

Funding: DAFM CoFoRD.