Kay Howard

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Bauxite mining in Western Australia occurs in forest infested with Phytophthora cinnamomi. The mining company Alcoa identified the need for a treatment to eradicate P. cinnamomi from relatively small volumes (<60 m3) of topsoil and gravel. This study examined the efficacy of copper sulphate (CuSO4) in eradicating P. cinnamomi within 2 h and after 5 days.(More)
Phosphite is used to protect plants from the soil borne pathogen, Phytophthora cinnamomi. Although phosphite stimulates resistance to P. cinnamomi, this is the first histological study of its effect on Eucalyptus marginata, an economically important forest tree in Western Australia. Clonal lines of E. marginata, considered resistant and susceptible to P.(More)
Phosphite is used to control Oomycetes in a wide range of horticultural and native plant species worldwide. However, phosphite can be phytotoxic, and some pathogens have exhibited a reduction in the effectiveness of phosphite due to prolonged use. In this study, salicylic acid (SA) was investigated as an alternative, or supplementary, treatment to be used(More)
Currently in Western Australia, phosphite is being used to contain the root and collar rot pathogen, Phytophthora cinnamomi, in native plant communities. There have been reports of negative effects of phosphite on arbuscular mycorrhiza (AM), so there are concerns that it may have a deleterious effect on other mycorrhizal fungi. Two glasshouse experiments(More)
Although Phytophthora species cause serious diseases worldwide, until recently the main focus on disease in natural ecosystems in southern Australia has been on the distribution and impact of P. cinnamomi. However, new Phytophthora pathogens have emerged from natural ecosystems, and there is a need to better understand the diversity and distribution of(More)
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