A 53-year old field trial to evaluate the performance of a range of chemical treatments on eucalypt poles
R S Johnstone, R A Eaton
Hardwood pole stubs of Eucalyptus maculata, Eucalyptus pilularis, Eucalyptus saligna and Eucalyptus paniculata were examined for termite attack and fungal decay after 53 years in ground contact. The trial compared eight different chemical treatments with untreated pole stubs of the four species investigated. Untreated Eucalyptus paniculata, a Class I durability species, performed particularly well, whilst treatment of Eucalyptus pilularis with zinc chloride/arsenic mixture afforded the best overall protection of the Class II and Class III durability species.