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Of the problems confronted by commercial forestry in western Indonesia, root-rot diseases of exotic plantation Acacia mangium and, more recently plantation Eucalyptus pellita, are the most intractable and damaging for the industrial pulpwood industry. For both acacias and eucalypts, identification of the main causal agent of red root-rot as Ganoderma philippii was assisted by species-specific PCR tests for G. philippii and G. mastoporum. Phellinus noxius was also found to be pathogenic on both. Extensive monitoring has shown that mortality increases more or less linearly with time at an average rate of about 3% per month. Average time from first observed infection to tree death was conservatively estimated at 10-11 months. Several options are potentially available for disease control, but as yet no reliable system has materialised. Seeking ways of managing inoculum load currently offers the only way forward for containing red root-rot until reliable biocontrols are developed.

Item Type:	Non Refereed Conference Paper
Keywords:	Ganoderma, root rot diseases, Acacia mangium, tropical acacias, tropical eucalypts, fungal diagnostics, tree mortality
Research Division:	Agricultural and Veterinary Sciences
Research Group:	Forestry Sciences
Research Field:	Forestry Pests, Health and Diseases
Objective Division:	Plant Production and Plant Primary Products
Objective Group:	Forestry
Objective Field:	Hardwood Plantations
UTAS Author:	Glen, M (Dr Morag Glen)
UTAS Author:	Francis, A (Mr Anthony Francis)
UTAS Author:	Mohammed, C (Professor Caroline Mohammed)
ID Code:	94075
Year Published:	2012
Deposited By:	Tasmanian Institute of Agriculture
Deposited On:	2014-08-28
Last Modified:	2014-08-28
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