Web Access Research Portal

Researcher: Pethybridge, SJ (Dr Sarah Pethybridge)

Fields of Research

Plant Pathology
Horticultural Crop Protection (Pests, Diseases and Weeds)
Crop and Pasture Protection (Pests, Diseases and Weeds)
Horticultural Production
Horticultural Crop Growth and Development
Environmental Education and Extension
Plant Biology
Mycology
Horticultural Crop Improvement (Selection and Breeding)
Crop and Pasture Improvement (Selection and Breeding)
Agriculture, Land and Farm Management
Plant Physiology
Terrestrial Ecology
Virology
Agricultural Systems Analysis and Modelling
Phycology (incl. Marine Grasses)
Crop and Pasture Production

Research Objectives

Horticultural Crops
Vegetables
Plant Extract Crops (e.g. Pyrethrum, Jojoba)
Tree Nuts (excl. Almonds and Macadamias)
Ornamentals, Natives, Flowers and Nursery Plants
Environmentally Sustainable Plant Production
Wheat
Linseed
Plant Production and Plant Primary Products

Career Best Publications

Analysis of Spatiotemporal Dynamics of Virus Spread in an Australian Hop Garden by Stochastic Modeling; Plant Disease
Analysis of the association among three viruses infecting hop in Australia; Plant Pathology
Spatial Analysis of Viral Epidemics in Australian Hop Gardens: Implications for Mechanisms of Spread; Plant Disease
Spatiotemporal Description of Epidemics Caused by Phoma ligulicola in Tasmanian Pyrethrum Fields; Phytopathology
Species composition and abundance of aphids in Australian hop gardens and their impact on spatiotemporal patterns of Carlavirus epidemics; Plant Pathology

Research Publications

1995 Wesfarmers Dalgety National Scholarship in Australia
9th International Workshop on Plant Disease Epidemiology, Landerneau, France
A case study: significance, epidemiology, and management of hop viruses. Invited presentation abstract in: Impact of Plant Virus Epidemiology : Past, Present and Future Symposium; Phytopathology
A feasibility study on the use of geographic information systems (GIS) in crop management for the Tasmanian pyrethrum industry
A new foliar disease of pyrethrum caused by Microsphaeropsis sp; Phytopathology
A Report on the Attendance of the 17th International Symposium on Virus and Virus-Like Diseases of Temperate Fruit Crops, Washington DC, United States of America and Associated Study Tours, 16 June - 8 July 1997
A survey for diseases associated with poor spring growth in first harvest pyrethrum crops
A survey for viruses and a viroid in Tasmanian pyrethrum crops; Australasian Plant Pathology
A survey of nematodes associated with pyrethrum in Tasmania, Australia, and the susceptibility of pyrethrum cultivars to root-lesion nematode; Australasian Plant Pathology
A survey to determine the prevalence and incidence of common viruses in potato seed stocks in Tasmania
Abiotic Disorders : Frost damage
Acetic acid as a fumigant to reduce fungal storage rots of Japanese squash (Cucurbita maxima); Phytopathology
American hop latent virus, Hop latent virus and Hop mosaic virus; Compendium of Hop Diseases
Analysis of Spatiotemporal Dynamics of Virus Spread in an Australian Hop Garden by Stochastic Modeling; Plant Disease
Analysis of the association among three viruses infecting hop in Australia; Plant Pathology
Analysis of the risk posed by downy mildew to the Australian hop industry
Apple Mosaic; Compendium of Hop Diseases
Australian Institute of Agricultural Science and Technology Young Professionals in Agri-Industry National Award
Bachelor of Agricultural Science with Honours
Baseline sensitivity of Australian Phoma ligulicola isolates from pyrethrum to azoxystrobin and difenoconazole; Journal of Phytopathology
Benefits of spring fungicides for Phoma management
Biodiversity of Soil Microflora and Microfauna
Characterisation of Botrytis species associated with neck rot of onion in Australia; Australasian Plant Pathology
Characterization of mating type genes supports the hypothesis that Stagonosporopsis chrysanthemi is homothallic and provides evidence that Stagonosporopsis tanaceti is heterothallic; Current Genetics
Characterization of the Fungal Pathogens Affecting Hop Cones in Australia; 13th Biennial Conference
Characterizaton of the spatiotemporal attributes of sclerotinia flower blight epidemics in a perennial pyrethrum pathosystem; Plant Disease
Chemical Injury; Compendium of Hop Diseases
Chrysanthemum white rust
Confirmation of ray blight disease of pyrethrum in Australia; Australasian Plant Pathology
Crop damage from Sclerotinia crown rot and risk factors in pyrethrum; Plant Disease
Cyst Nematode; Compendium of Hop Diseases
Development of a Fungicide-Based Management Strategy for Foliar Disease Caused by Phoma ligulicola in Tasmanian Pyrethrum Fields; Plant Disease
Disease Identification Management
Diseases of hop in Australia
Diseases of Pyrethrum
Diseases of Pyrethrum in Tasmania: Challenges and Prospects for Management; Plant Disease
Diversity of the coat protein-coding region among Ilarvirus isolates infecting hop in Australia; Plant Pathology
Downy Mildew of Hop
Downy mildew of hop
Durable management of ray blight disease (Phoma ligulicola) of pyrethrum. Sub pro-program 3e of Horticulture Australia Ltd Project PY09002
Effect of Cultivar on Ray Blight Disease (Update on 2006/07 glasshouse experiment)
Effect of viruses on agronomic and brewing characteristics of four hop (Humulus lupulus) cultivars in Australia; Annals of Applied Biology
Effect of viruses on the yield and brewing characteristics of four hop cultivars in Australia; Proceedings of the International Hop Growers Scientific Commission
Effects of seedborne and overwintering inoculum on ray blight severity in pyrethrum; American Phytopathological Society Annual Meeting 2011
Efficacy of fungicides for control of ray blight and Sclerotinia crown rot in Tasmanian pyrethrum fields
Efficacy of spring fungicides survey for management of Phoma ligulicola in 2004 (Crop 72901)
Epidemics of ray blight on pyrethrum are linked to seed contamination and overwintering inoculum of Phoma ligulicola var. inoxydabilis; Phytopathology: International Journal of The American Phytopathological Society
Epidemiology and management of foliar diseases of pyrethrum
Epidemiology and Management of Foliar Diseases of Pyrethrum
Epidemiology and Management of Pathogens Infecting Hop (Humulus lupulus L.) in Australia
Epidemiology and management of viruses of hop in Australia; Acta Horticulturae
Epidemiology and management of white mould (Sclerotinia sclerotiorum) of beans
Epidemiology and significance of viruses affecting hop (Humulus lupulus L.) and the implications for disease management; In : Recent Research Developments in Plant Pathology
Epidemiology of Phoma spp. complex and other foliar pathogens affecting pyrethrum
Epidemiology of Phoma spp. complex and other foliar pathogens affecting pyrethrum
Epidemiology of Phoma spp. complex and other foliar pathogens affecting pyrethrum
Epidemiology of Potato carlavirus (PVS) and Potato potexvirus X (PVX) in seed potato in Tasmania, Australia; Phytopathology
Epidemiology of Viruses Infecting Hop in Australia
Epidemiology of viruses infecting hop in Washington State, USA
Epidemiology of viruses infecting hop in Washington State, USA
Epidemiology of viruses infecting hops ( Humulus lupulus L.) in Australia; Phytopathology
Epidemiology of viruses infecting hops (Humulus lupulus L.) in Australia
Epidemiology of walnut blight, caused by Xanthomonas arboricola pv. juglandis, in Tasmania, Australia; 7th Biennial Australasian Plant Pathology Society Conference
Epidemiology of walnut blight, caused by Xanthomonas arboricola pv. juglandis, in Tasmania, Australia; 6th International Walnut Symposium
Estimate of the global warming potential of the Tasmanian pyrethrum industry in comparison to other crops, potato and onion; Acta Horticulturae Et Regiotecturae: The Scientific Journal for Horticulture, Landscape Engineering, Architecture and Ecology
Evidence for sexual recombination in Didymella tanaceti populations, and their evolution over spring production in Australian pyrethrum fields; Phytopathology
Field Guide to Pyrethrum Diseases and Disorders
Field Guide to Pyrethrum Diseases and Disorders
First report of tomato spotted wilt tospovius in common agapanthus; Plant Disease
First Report of Fusarium crookwellense Causing Tip Blight on Cones of Hop; Plant Disease
First Report of Boeremia Blight caused by Boeremia exigua var. exigua on pyrethrum in Australia; Plant Disease
First Report of Infection by Alternaria alternata on Cones of Hop in Australia; Plant Disease
First Report of Witch's Broom Phytoplasma (16SrII-D Group) in Purple Coneflower in Australia; Plant Disease: An International Journal of Applied Plant Pathology
Forecasting climate suitability of Australian hop growing regions for establishment of hop powdery and downy mildews; Australasian Plant Pathology
Frost and salinity tolerance in pyrethrum; Horticulture for the Future 2011
Genetic differentiation of Phoma ligulicola isolates from pyrethrum in Tasmania; 2002 APS Annual Meeting
Genetic diversity of Phoma ligulicola isolates from pyrethrum in Tasmania; Phytopathology
Genetic relationships among isolates of Phoma ligulicola from pyrethrum and chrysanthemum based on ITS sequences and its detection by PCR; Australasian Plant Pathology
Genetic variability of Phoma ligulicola in Tasmania, Australia; Phytopathology
Hop Cultivars and Breeding; Compendium of Hop Diseases
Hop latent viroid; Compendium of Hop Diseases
Hop pathology research
Hop Pathology Research
Hop stunt decline: A disease or disorder of unknown aetiology in Australian hop yards; Online. Plant Health Progress
Horizontal Spread of Ilarviruses in Young Trees of Several Peach Cultivars; Plant Disease
Host range of Phoma ligulicola isolates causing ray blight disease in Tasmanian pyrethrum fields; Phytopathology
Host Range of Australian Phoma ligulicola var. inoxydablis Isolates from Pyrethrum; Journal of Phytopathology
Humulus japonicus latent virus (Humulus japonicus virus); Compendium of Hop Diseases
Improving management of Potato Virus S through a better understanding of mechanisms of virus transmission
Improving the Fungicide-Based Management of Ray Blight Disease in Tasmanian Pyrethrum Fields; Plant Disease
Incidence and effects of viruses on production of two newly adopted hop (Humulus lupulus) cultivars in Australia; Australian Journal of Agricultural Research
Incidence and spatial distribution of viruses in 'Horizon' hop gardens in Washington; Phytopathology
Incidence and Spatial Distribution of Viruses in Hop Gardens of Washington State; Plant Disease
Infection Efficiency of Viruses in Tasmanian Oilseed Poppy
Influence of Phoma ligulicola on yield, and site factors on disease development, in Tasmanian pyrethrum crops; Australasian Plant Pathology
Injuries Caused by Environmental Factors; Compendium of Hop Diseases
Interspecific associations between viruses in an Australian hop cultivar
Lack of evidence for recombination or spatial structure in Phoma ligulicola var. inoxydabilis populations from Australian pyrethrum fields; Plant Disease: An International Journal of Applied Plant Pathology
Listed on the Australian Farm Journal Top 100 Agriculturalists under 35
Management of foliar disease by fungicides caused by Phoma ligulicola in pyrethrum (2004 trials)
Management of foliar disease by fungicides caused by Phoma ligulicola in pyrethrum (2005 trials)
Management of ray blight (Phoma ligulicola) in pyrethrum
Management of ray blight (Phoma ligulicola) in pyrethrum
Management strategy for elimination of virus from certified seed potato stocks in Tasmania
Managing Viruses in Tasmanian Seed Potato Stocks
Mating type distributions of Microsphaeropsis tanaceti isolated from pyrethrum fields in Tasmania, Australia; 2014 APS-CPS Joint Meeting
Mating-type gene structure and spatial distribution of Didymella tanaceti in pyrethrum fields; Phytopathology
Mechanical transmission of Apple mosaic virus in Australian hop (Humulus lupulus) gardens; Annals of Applied Biology
Modelling Disease Gradients in Pyrethrum Due to Phoma ligulicola Using Tobit and Nonparametric Regression; 9th International Workshop on Plant Disease Epidemiology
Modelling tomato spotted wilt virus epidemics on potatoes in Australia; 8th International Plant Virus Epidemiology Symposium
Molecular variability within the coat protein gene of Hop mosaic and Hop latent carlaviruses; 7th Australasian Plant Virology Worshop
Molecular variability within the coat protein gene of hop mosaic and hop latent carlaviruses; International Hop Growers Scientific Commission
Nematodes Associated with Carrot Production in Tasmania, Australia and the Effect of Pratylenchus crenatus on Yield and Quality of Kuroda-Type Carrot; Plant Disease
Nematodes associated with hop (Humulus lupulus L.) production in Tasmania; Phytopathology
Nematodes Associated with Hop Production in Tasmania, Australia; International Hop Growers Scientific Commission
New fungicide tackles disease
Nutrient Imbalances; Compendium of Hop Diseases
Pathogenic fungi associated with bud death of pyrethrum; 10th Biennial APPS Conference
Pathogenicity of fungi commonly isolated from foliar disease in Tasmanian pyrethrum crops; Australasian Plant Pathology
Phylogenetic relationships inferred from translation elongation factor 1-alpha sequences between Phoma ligulicola isolates causing disease on pyrethrum and chrysanthemum; Phytopathology
Pilot study into 'Slow Plant Loss After Single Harvest' (SPLASH) syndrome in pyrethrum
Plant Pathology - Helping Plants Become Healthier and Farmers More Profitable!
Plant-Parasitic Nematodes Associated with Hop Production in Tasmania, Australia; Journal of Phytopathology
Poster and Field Guide
Powdery mildew of hop
Powdery Mildew of Hop
Prevalence and Incidence of Potato Carlavirus S (PVS) and Potato Potexvirus X (PVX) in Tasmanian Seed Potato Crops; 2nd Joint Conference of the International Working Group on Legume and Vegetable Viruses
Prevalence and Incidence of Viruses in New Zealand Hop (Humulus Iupulus) Gardens; New Zealand Journal of Crop and Horticultural Science
Preventing resistance to strobilurin fungicides for ray blight control in pyrethrum production
Pyrethrum Diseases
Pyrethrum Diseases in Tasmania
Pyrethrum Diseases, Weeds and Crop Management Improvement Program (Project No OTO 3001) Final report for subprogram: Cost effective and sustainable methods for nematode control in pyrethrum crops 30/6/2006
Pyrethrum yield estimation by digital image analysis; Phytopathology: International Journal of The American Phytopathological Society
Pyrethrum yield estimation by digital image analysis; 2011 APS-IPPC Joint Meeting
Quantifying Loss Caused by Ray Blight Disease in Tasmanian Pyrethrum Fields; Plant Disease
Quantifying the effect of Sclerotinia and Botrytis flower blights on pyrethrum production
Ray blight of pyrethrum; APSnet Image of the Week
Report on study tour of pyrethrum production in Kenya
Researchers fight ray blight threat
Sclerotinia Crown Rot
Seasonal fluctuations in fungi associated with pyrethrum foliage in Tasmania; Australasian Plant Pathology
Seedborne Infection of Pyrethrum by Phoma ligulicola; Plant Disease
Sensitivity of phoma ligulicola, cause of ray blight disease in pyrethrum, to fungicides; 16th Biennial Australasian Plant Pathology Society Conference
Sensitivity of Australian Sclerotinia sclerotiorum isolates from bean fields to boscalid; New Zealand Journal of Crop and Horticultural Science
Site-Specific Risk Factors for Ray Blight in Tasmanian Pyrethrum Fields; Plant Disease
Site-specific risk factors of white mould epidemics in bean (Phaseolus vulgaris) in Tasmania, Australia; New Zealand Journal of Crop and Horticultural Science
Spatial analysis of viral epidemics in Australian hop gardens
Spatial Analysis of Viral Epidemics in Australian Hop Gardens: Implications for Mechanisms of Spread; Plant Disease
Spatial characteristics of white mould epidemics and the development of sequential sampling plans in Australian bean fields; Plant Pathology: A Record of Current Work on Plant Diseases and Pests
Spatial distribution of Pratylenchus crenatus in a carrot field and its effect on yield and quality; Phytopathology
Spatiotemporal characterization of Sclerotinia crown rot epidemics in pyrethrum; Plant Disease
Spatiotemporal Description of Epidemics Caused by Phoma ligulicola in Tasmanian Pyrethrum Fields; Phytopathology
Spatiotemporal spread of Potato carlavirus S and Potato potexvirus X in seed potato in Tasmania, Australia; Plant Health Progress
Species composition and abundance of aphids in Australian hop gardens and their impact on spatiotemporal patterns of Carlavirus epidemics; Plant Pathology
Spread of Potato Carlavirus S (PVS) and Potato Potexvirus X (PVX) In Seed Potato Crops In Tasmania, Australia; IX International Plant Virus Epidemiology Symposium
Spread of Prunus necrotic ringspot virus (PNRSV) in Australian hop gardens; Phytopathology
Spread of viruses in two new cultivars of hop in Australia; Phytopathology
Spring Fungicides: Why, What and When?
Spring Fungicides: Why, What and When?
Standardized Lists of Common Names for Plant Diseases
Strain characterisation of Potato virus from seed potato in Tasmania, Australia; 16th Biennial Australasian Plant Pathology Society Conference
Strain characterization of potato virus S isolates from Tasmania, Australia; Plant Disease: An International Journal of Applied Plant Pathology
Strategic application of copper for managing walnut blight in Tasmania; 16th Biennial Australasian Plant Pathology Society Conference
Strobilurin Fungicides : What are they and how do we prevent resistance?
Survey for Viruses and Viroids in Tasmanian Pyrethrum Crops
Survey for viruses in oilseed poppy in Tasmania, Australia; Australasian Plant Pathology
Susceptibility of Tasmanian pyrethrum selections to ray blight disease
Symptomatology of crown rot of pyrethrum caused by Sclerotinia spp. in Tasmania, Australia; 2014 APS-CPS Joint Meeting
Symptoms of foliar disease of pyrethrum
Tan spot: a new disease of pyrethrum caused by Microsphaeropsis tanaceti sp.nov; Plant Pathology
Tasmania
Teaching Merit Certificate for Introductory Plant Pathology Course
Temporal development of walnut blight in Tasmania
Temporal progression of walnut blight, cuased by Xanthomonas arboricola pv. juglandis, in Australia; 9th International Congress of Plant Pathology
The American Phytopathological Society Meeting, Austin Convention Centre, Texas, USA
The Compendium of Hop Diseases, Arthropod Pests and other Diseases; International Hop Growers Scientific Commission
The influence of cultivation practices on the spatial distribution of viruses in Australian hop gardens; Plant Virus Epidemiology : Current status and future prospects
The Queen's Trust for Young Australians, Queen's Trust Achiever Award
The risk posed by chrysanthemum white rust (Puccinia horiana) to the Tasmanian pyrethrum industry
The role of phytotoxins in ray blight disease of pyrethrum and significance of toxin tolerance to disease resistance
The Study of Plant Disease Epidemics By Laurence V Madden, Gareth Hughes, and Frank van den Bosch
Timing bactericides strategically for management of Walnut Blight in Tasmania, Australia; Acta Horticulturae
Towards a Durable Management Strategy for Ray Blight Disease in Tasmanian Pyrethrum Crops (LP0560562)
Towards a Durable Management Strategy for Ray Blight Disease in Tasmanian Pyrethrum Crops (LP0560562)
Towards a Durable Management Strategy for Ray Blight Disease in Tasmanian Pyrethrum Crops (LP056062)
Towards a Durable Management Strategy of Ray Blight Disease in Tasmanian Pyrethrum Crops
Transmission of Hop Latent and Hop Mosaic Carlaviruses by Macrosiphum euphorbiae and Myzus persicae; Journal of Phytopathology
Travel Grant from the American Phypathological Foundation and Rural Industires Research and Development Corporation
Travel Grant from the Royal Society of Edinburgh
Trial of S2200 for control of Ray Blight in pyrethrum
Trial of S2200 for control of Winter Dieback in pyrethrum
University Foundation Graduate Award
Use of a multispectral radiometer for assessment of ray blight disease and yield loss in pyrethrum in Tasmania; 16th Biennial Australasian Plant Pathology Society Conference
Use of a Multispectral Radiometer for Noninvasive Assessments of Foliar Disease Caused by Ray Blight in Pyrethrum; Plant Disease
Use of Survival Analysis to Assess Management Options for Ray Blight in Australian Pyrethrum Fields; Plant Pathology: A Record of Current Work on Plant Diseases and Pests
Virus Incidence and Spread in Australian Triploid Hops; Acta Horticulturae
Virus Incidence and Spread in Australian Triploid Hops (Humulus lupulus); Proceedings of the 8th International Symposium on Small Fruit Virus Diseases
Virus incidence in Australian hop (Humulus lupulus L.) gardens and cultivar differences in susceptibility to infection; Australian Journal of Agricultural Research
Virus Prevalence and Incidence in New Zealand Hop Gardens
Viruses and Viroids Infecting Hop : Significance, Epidemiology, and Management; Plant Disease
Viruses and Viroids Infecting Hop: Significance, Epidemiology and Management
Viruses of Minor Importance; Compendium of Hop Diseases
Visual and Radiometric Assessments for Yield Losses Caused by Ray Blight in Pyrethrum; Crop Science
Wesfarmers Dalgety Student Forum
Witch's broom phytoplasma infecting Echinacea pallida in Australia'; Phytopathology: International Journal of The American Phytopathological Society
Witch’s broom phytoplasma infecting Echinacea pallida in Australia; 2011 APS-IPPC Joint Meeting
Young Australian of the Year Awards 1997
Young Australian of the Year Awards 1998

Research Projects

Conduct a Survey for Viruses and Viroids in Tasmanian Pyrethrum Crops and Identify Management Strategies to Maximise Production; Department of Agriculture (DoA (Cwth))
Epidemiology of Phoma spp. Complex and other Foliar Pathogens Affecting Pyrethrum; Australian Research Council (ARC)
Host-specialisation Concepts in a Plant-pathogenic Fusarium Species; University of Tasmania (UTAS)
Improved Pyrethrum Crop Productivity; Botanical Resources Australia Pty Ltd (BRAPL)
Improving Management of Potato Virus S Through a Better Understanding of Mechanisms of Virus Transmission; Horticulture Innovation Australia (HIA)
Integrated Management of Diseases of Pyrethrum; Horticulture Innovation Australia (HIA)
Integrated Viral Disease Management in Vegetable Crops; Horticulture Innovation Australia (HIA)
Joint Meeting of the American and Canadian Phytopathological Societies - 7-11 August 1999; AgriFutures (AgFut)
Management Strategy for Elimination of Viruses from Certified Seed Potato Stocks in Tasmania; Horticulture Innovation Australia (HIA)
Managing Viruses in Tasmanian Seed Potato Stocks; Horticulture Innovation Australia (HIA)
Molecular and Phenotypic Variation within Phoma Ligulicola in Tasmanian Pyrethrum Crops; University of Tasmania (UTAS)
Research Conducted into Flower Diseases of Pyrethrum; Botanical Resources Australia Pty Ltd (BRAPL)
Rising Stars; University of Tasmania (UTAS)
The Role of Phytotoxins in Ray Blight Disease of Pyrethrum and Significance of Toxin Tolerance to Disease; Australian Research Council (ARC)

Research Candidate Supervision

Characterisation of Cultural, Biological and Molecular Variability of Phoma Ligulicola Isolates Associated with Ray Blight Disease of Pyrethrum and Chrysanthemum
Epidemiology and Management of Flower Diseases of Pyrethrum
Epidemiology and Management of Walnut Blight in Tasmania
Epidemiology and the development of risk assessment models for the management of tomato spotted wilt virus (TSWV) in potatoes
Epidemiology of Potato virus S and Potato virus X in Seed Potato in Tasmania, Australia
Geophytopathological aspects of fungal foliar diseases of pyrethrum (Tanacetum cineariifolium L) in Tasmania
Molecular Variation of Viruses Infecting Hops in Australia and Associated Studies
The role of phytotoxins in ray blight disease of pyrethrum and significance of toxin tolerance
Understanding the Genetic Structure of Microsphaeropsis tanaceti within Pyrethrum and the Mechanisms for Plant Host Resistance