Analysis of Blackbutt (Eucalyptus Pilularis Sm.) Seedling Growth in a Blackbutt Forest Soil

Growth, nutrient acquisition and ectomycorrhizae of Eucalyptus regnans F. Muell. seedlings in fertilized or diluted air-dried and undried forest soil

“…Stimulation of seedling growth in air-dried or solarized soils has been reported also elsewhere, and on different species (e.g. Florence and Crocker, 1963;Katan, 1981).…”

Factors affecting the growth of Eucalyptus delegatensis seedlings in inhibitory forest and grassland soils

“…Our results are consistent with these observations. An inhibition of seedlings of E. pilularis when grown in soil from a mature forest of the same species was attributed by Florence and Crocker (1962) to microbiological antagonism, since inhibition was overcome completely by sterilising the soil in the cold with gamma-irradiation. Ashton and Willis (1982) provided evidence that failure of seedlings of E. regnans to survive and grow beneath mature stands of that species was due in part to the presence of Cylindrocarpon destructans, a weak pathogen that exudes a powerful antibiotic toxin, which could be antagonistic to mycorrhizal fungi and which is prevalent in cool moist forest soils.…”

“…It had also been shown that removal of grass by the use of herbicide improved the nitrogen nutrition of eucalypt seedlings planted in the field (Ellis et al 1985); that decline of eucalypts could be related to a decrease in soil temperature and a possible increase in soil moisture that accompanied the development of an understory of rainforest (Ellis, 1971); and that burning the rainforest understory resulted in the recovery of eucalypts that were in decline (Ellis et al, 1980). For closely related forest types it has been reported that cool moist conditions of the forest floor can produce microbiological populations that are antagonistic to eucalypt seedlings (Ashton and Willis, 1982;Florence and Crocker, 1962). Thus equally reasonable hypotheses for the cause of each phenomenon were that it was due to either unfavourable nutritional factors, or antagonistic microbiological factors that developed in association with the minor vegetation of the eucalypt stands as secondary succession proceeded.…”

The Interdependence of the Eucalypts and Forest Fires in Southern Australia

“…As no regeneration had occurred for 50 years it seems that a likely cause could be that the litter of E. delegatensis is inhibitive to regeneration of E. delegatensis. Ashton (1962) Attiwill (1962 and Florence and Crocker (1962) all found that eucalypt litter apparently inhibits the regeneration of at least some species. Should this be generally true for the eucalypts it would indicate an.…”