Confor Show Sept 2013 tree health seminar Ben Jones, Forestry Commission

Plant Health Operations Update

Ben Jones Plant Health Operations Manager FC England

Phytophthora ramorum

2012 Survey Summary

• 170 flying hours covering around 24,000 miles across the UK

• 79,058 Ha of larch surveyed across England, Wales, Scotland, N Ireland & IOM (increase in around 10,000 Ha compared to 2011)

• Equates 70% of all larch that has been analysed across the UK both on respective PFEs and in PW

2012 Survey Summary

• Observation of disease dynamics continue to be different in different parts of the country – the more larch, the bigger the problem

• Significant new findings in SW Scotland, significant increase in S Wales, limited new findings in the Forest of Dean and SE England

• Weather conditions have been extremely conducive for Pr throughout 2012 – likely to see further infection

• Further findings generally being made in association with known infected sites (both rhodo & larch), but rapid advance of symptoms in some locations were observed over the summer

2012 Survey Summary

Symptom Progression June 2011

Symptom Progression June 2011

Symptom Progression June 2012

Phytophthora ramorum symptom progression on infected larch stands

in the UK

2013 Surveillance SW England

Phytophthora ramorum symptom progression on infected larch stands

in the UK

2013 Surveillance SW England

Phytophthora ramorum symptom progression on infected larch stands

in the UK

2013 Surveillance SW England

Phytophthora ramorum symptom progression on infected larch stands

in the UK

2013 Surveillance SW England

Phytophthora ramorum symptom progression on infected larch stands

in the UK

2013 Surveillance S Wales

Phytophthora ramorum symptom progression on infected larch stands

in the UK

2013 Surveillance S Wales

Phytophthora ramorum symptom progression on infected larch stands

in the UK

2013 Surveillance S Wales

Phytophthora ramorum symptom progression on infected larch stands

in the UK

2013 Surveillance S Wales

Phytophthora ramorum symptom progression on infected larch stands

in the UK

2013 Surveillance S Wales

2013 Aerial Survey

2013 Survey Summary

Chalara fraxinea

Chalara fraxinea Sampling Observations

Chalara fraxinea Sampling Observations

Chalara fraxinea Sampling Observations

Chalara fraxinea Sampling Observations

Chalara fraxinea Sampling Observations

Chalara fraxinea Sampling Observations

Chalara fraxinea Sampling Observations

Chalara fraxinea Sampling Observations

Chalara fraxinea Sampling Observations

Site investigation: Basal Lesions

Chalara – E Anglia

Chalara – E Anglia

1996 Planting

1996 Planting

Current Situation