Abstract
SUMMARY Deaths in patches have occurred over a gross area of 2,000 acres in stands 3–29 years of age. The occurrence of deaths, first reported in 1938, has increased over the last 10 years in the northern forest reserves of South Australia. The site quality of affected areas is average or higher, and the deaths are most numerous on shallow, stony soils of small hillocks and knolls, while stands on nearby valley-bottoms with deep soils are unaffected. Affected trees are resin bleeders and the number of bleeders is directly proportionate to the number of deaths. Associated with the affected trees is a secondary fungal infection of Diplodia pinea. This particular investigation was concentrated in Mt. Crawford Forest Reserve, 40 miles north-east of Adelaide, but similar effects were observed in other forest reserves.
Published Version
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