Myrtle Rust as at March 2011

Situation summary

Myrtle rust up date – Kevin Cooper March 2011 Surveillance

. Targeted – finished 22 Dec ’10 . Passive – (self reporting) since 22 Dec . Targeted results  > 1600 inspections >1300 locations/properties  > 600 nurseries (wholesale & retail)  > 250 bushland sites  Negative interstate traces  > 201 Infected premises •Amenity •Residential NSW •Nurseries •Bushland locations Potential range with current hosts Known susceptible hosts

. Hundreds of Myrtacae sp. exposed . Amenity, gardens, nurseries & bushland

. Infected >50 sp (not including multiple cultivars of same sp.)  Nurseries* 17 (incl. nursery in bush setting)

 Bushland* 20 (incl. cultivated at sites in bushland)

 Garden/amenity* 13

 Industry* 3-4

* Some sp. present in more than 1 category Agonis

Production Rhodamnia rubescens Melaleuca quinquenervia

Bushland Other production infected sp . Acmena smithii . Backhousia citridora scented myrtle • Callistemon viminalis weeping Bottlebrush • Callistemon sp St Mary MacKillop . Chamelaucium unicinatum Geraldton wax . prominens south velvet myrtle . bullata Rainbow end . Lophomyrtus x ralphi Red dragon & Black Stallion . Melaeuca alterniflora tea tree . Melaleuca linarifolia Claret tops . Metrosideros collina ‘Fiji’ and ‘Dwarf’ . communis common myrtle . Pilidiostigma globrum plum myrtle . australe meridian midget lilly pilly • Syzygium ‘Cascade’ (Syzygium wilsonii subsp. wilsonii x Syzygium leumannii) lilly pilly . Syzygium jambos plum rose, rose apple . Syzygium luehmannii small leaf lilly pilly, riberry • Syzygium oleosum blue lilly pilly • Tristania neriifolia water gum • Xanthostemon chrysanthus golden penda Other bushland infected sp • Angophora floribunda rough barked apple • Backhousia anisata aniseed myrtle • Backhousia myrtifolia grey myrtle • Callistemon salignus willow bottlebrush • Choricarpia leptopetala rusty turpentine • Eucalyptus agglomeratta blue leafed stringbark • Eucalyptus deani Dean’s gum • Eucalyptus elata river peppermint, river white gum • Eucalyptus pilularis blackbutt • Eugenia reinwardtiana beach cherry • acemeniodes scrub ironwood • Gossia bidwilli scrub python tree • Gossia hilli scaly myrtle • Gossia gonoclada angle stemmed myrtle • Leptospermum petersonii lemon scented tea-tree • Leptospermum rotundifolium round Leaf tea-tree • Melaleuca nodosa prickly leaved paperbark • Rhodamnia sp (x5) malletwood/turpentine • Rhodomyrtus psidiodes native guava • Syncarpia glomulifera turpentine Impact on plants

. Much unknown . Variable - factors influencing affect on plants  susceptibility of plant  age of plant • species • habitat – incl aspect, solar radiation • level of exposure/infection • weather – temperature & humidity • other species • stress • season Affects on plants

 Dead young plants seen in nurseries & bushland bush

 Adult plants typically coping unless otherwise stressed* . Leaf curling on new growth tips . Leaf loss . Infected seeds and fruits . General yellowing

* Short term observation Treatments

. Spray - for how long . Remove & destroy . Spray, remove & destroy . Monitor & watch . Select resistant strains . Do not use known susceptible hosts Myrtle rust in NSW

. Risk assessments . Red Zone/Green Zone . Activities . Vehicles . People