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 plant in bush setting) Bushland* 20 (incl. cultivated plants at sites in bushland) Garden/amenity* 13 Industry* 3-4 * Some sp. present in more than 1 category Austromyrtus Agonis Production Rhodamnia rubescens Melaleuca quinquenervia Bushland Other production infected sp . Acmena smithii . Backhousia citridora lemon scented myrtle • Callistemon viminalis weeping Bottlebrush • Callistemon sp St Mary MacKillop . Chamelaucium unicinatum Geraldton wax . Lenwebbia prominens south velvet myrtle . Lophomyrtus bullata Rainbow end . Lophomyrtus x ralphi Red dragon & Black Stallion . Melaeuca alterniflora tea tree . Melaleuca linarifolia Claret tops . Metrosideros collina ‘Fiji’ and ‘Dwarf’ . Myrtus communis common myrtle . Pilidiostigma globrum plum myrtle . Syzygium 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 • Gossia 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 .