1 - 10 of 11 articles
SUMMARY The incorporation of native kauri pine Agathis spp. into the plantation development programme of Queensland has been hampered by restricted sites, shortage of seed and insect pests. During 1959 extensive defoliation of kauri pine in the Imbil Forestry Sub-District was caused by the kauri...
SUMMARY Needle-cast fungi are known to occur in coniferous plantations and arboreta in the Australian Capital Territory. The pathogenic effect of these fungi on the host species is discussed. Common species include Lophodermium pinastri (Schrad. ex Fr.) Chev., L. juniperinum (Fr.) de Not....
SUMMARY Wind is the only important agent of dispersal of E. regnans F. Muell. seed and most seed is disseminated in the direction of the locally prevailing winds. Seed-trapping studies over several years have shown that dissemination is poor from the edge of a dense forest, but much better from...
SUMMARY A plea is made for more consideration by plantation managers of the effect of various practices on logging costs. It is pointed out that logging costs normally exceed growing costs and that some substantial savings in logging costs can be achieved by making heavier and fewer thinnings.
SUMMARY A study of seed production of Pinus radiata D. Don. has been made in two stands in Gippsland, Victoria, after a heavy thinning at nine years. It has shown that seed production per acre increased five-fold in the five years after a thinning to the best 100 trees per acre. At the same time...
SUMMARY Evidence is presented that second rotation planted stands of Pinus radiata D. Don in South Australia have a lower productivity than first rotation crops on the same sites. After clear felling of unthinned first rotation stands a significant loss of productivity in replanted stands is...
SUMMARY With expansion of the teak planting programme in New Guinea, recognition of a need for improved seed sources has prompted the development of a genetic improvement programme. The programme involves provenance testing, individual tree selection, seed orchard establishment, clonal and...
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