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ISHS Acta Horticulturae 264: II International Protea Research Symposium

THE EFFECT OF AMENDMENT OF SOIL WITH ORGANIC MATTER, A HERBICIDE AND A FUNGICIDE ON THE MORTALITY OF SEEDLINGS OF TWO SPECIES OF BANKSIA INOCULATED WITH PHYTOPHTHORA CINNAMOMI

Authors:   K.W. Dixon, K. Frost, K. Sivasithamparam
Abstract:
This study investigated the benefits of integrated control of the disease caused by the soil borne fungus, Phytophthora cinnamomi on two species of Banksia. To date no single method has been found to have universal application for control of P. cinnamomi in the family Proteaceae. Experiments were undertaken using the Western Australian species Banksia attenuata and B. occidentalis grown in sand mixed with two types of organic mulch (composted litter from a natural habitat and from an avocado orchard) a fungicide (prothiocarb) and a herbicide (chlorthal dimethyl) singly and in combination. Results show that the type of organic mulch may affect disease expression in the two host banksias and that combination of organic mulch, herbicide and fungicide were relatively the most successful treatments. Integrated control may therefore hold some promise for the control of P. cinnamomi in Banksia.
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