Research Branch Report No. 204

The influence of Acacia spp. on the control of Phytophthora cinnamomi root rot of Eucalyptus sieberi.  I. W. Smith and G. C. Marks.  September 1982.  14 pp. (unpubl.)

SUMMARY

The feasibility of using Acacia spp. (wattles) to control Phytophthora cinnamomi Rands root rot of Eucalyptus sieberi L.A.S. Johnson (silvertop) was examined in pot experiments in a phytotron, under conditions strongly favouring root disease.

A strong, but transient protective effect occurred. This was attributed to the rapid removal of water by transpiration of the Acacia spp. The magnitude of the protective effect depended on soil type, the disease resistance of the Acacia spp.and its transpiration rate. Reduction of root disease in E. sieberi forests of Victoria through manipulation of ground cover and stand composition appear practicable, and will be examined further.

Also published:

Smith, I.W. and Marks, G.C. (1983)  Influence of Acacia spp. on the control of Phytophthora cinnamomi root rot of Eucalyptus sieberiAust. For. Res. 13: 231-40.