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An address given on the occasion of World Forestry Day at Dinners held by the Queensland Division of the Institute of Foresters of Australia in Brisbane on 21 March 1983 and Gympie on 22 March 1983.
Summary The retention of litter and logging residue as a source of nutrients and organic matter for the next crop, as well as a mulch to conserve soil moisture, are recognised as primary factors influencing the productivity of successive crops of radiata pine planted on sandy soils, and are also...
Summary The growth rate of jarrah was measured in 47 plots situated in high and low quality cut-over forest between Mundaring and Collie. Mean growth increments per decade for jarrah in high and low quality forest respectively were: diameter, 1.7 and 1.0 cm; basal area, 1.9 and 0.6 m2ha−1;...
Summary The ‘traditional’ and ‘bench’ techniques for felling pulpwood were evaluated using the same three subject fallers on both occasions. Data were collected over a four hour trial of each technique on two separate days followed by a one hour simulation of separate job elements on each day....
Summary The nutrient status of Pinus radiala seedlings raised in 1981 at three Victorian nurseries under a multi-element fertiliser regime was compared with that of earlier seedling crops. Nutrient additions were based on estimated seedling requirements, and concentrations of the eight nutrients...
Summary Yield curves are presented for Pinus radiata grown on seven soil types in Victoria. The curves were derived from the Mitscherlich growth model through non-linear regression of growth plot data. The use of yield curves to predict yield from silviculturally improved stands is discussed in...
Summary Residues of hexazinone in streamwater were monitored over a nine-week period after helicopter application of the herbicide at a rate of 2 kg ha−1 to a 46.4 ha experimental catchment. The aerial application was made in December 1981 following conversion of a steeply sloping catchment from...
Summary Progress toward integrating wildlife conservation and timber production in Australian forests is examined. In recent years there have been significant accomplishments in research dealing with this topic but efforts should also focus on the application of general ecological principles...
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