Articles by Author: A G Ouml Tz

Search results for A G Ouml Tz

We found 229 results for you
  1. BOOK REVIEWS

    Item type: Journal Article • Journal: South African Forestry Journal
  2. Requirements for Intensive Silviculture

    Item type: Journal Article • Journal: South African Forestry Journal
    The fundamentals of intensive silviculture in South Africa are not a recent development but were already indicated at the beginning of this century. The greater emphasis placed on its application today is due to the increased demand for timber and...
  3. Fertilising Commercial Forest Species in Southern Africa: Research Progress and Problems (Part 1)

    Item type: Journal Article • Journal: South African Forestry Journal
    Since the inception of forest fertiliser research in Southern Africa in 1926, eight eucalypt, six pine and four acacia species have been tested, encompassing a wide range of sites in summer, winter and uniform rainfall areas. Marked deficiencies of P,...
  4. Growth, Yield and Timber Density of Short Rotation Coppice Stands of <em>Eucalyptus grandis</em>

    Item type: Journal Article • Journal: South African Forestry Journal
    The effects of timing initial coppice reductions, number of reductions and final number of shoots per stool on growth and yield of Eucalyptus grandis are described. The basic data were obtained from three experiments situated in different climatic zones of...
  5. Site Evaluation in Black Wattle with Special Reference to Soil Factors

    Item type: Journal Article • Journal: South African Forestry Journal
    Together with climate, soil characteristics are the most important factors affecting tree growth. However, the attempts in many site evaluation studies to establish a direct relationship between soil factors and tree growth have not been very successful, the exception being...
  6. Role of Eucalypt Plantations in Timber Supply and Forest Conservation in Sub-Saharan Africa

    Item type: Journal Article • Journal: South African Forestry Journal
    The role of eucalypt plantations in timber supply and forest conservation in Sub-Saharan Africa was investigated. The annual destruction of 11,5 million ha of tropical forest is highlighted, the various causes indicated and the controversy whether fast-growing plantations and woodlots...
  7. Statistical Aspects of Sampling for Height in Tree Species Trials

    Item type: Journal Article • Journal: South African Forestry Journal
    The paper, based on a re-analysis of existing species trials in Eucalyptus plantations, discusses some basic aspects of sampling. The first part of the study deals with the selection of response variables in such trials: mean height, the median and...
  8. Incorporating Risk into <em>Eucalyptus</em> Species—Site Selection Decisions

    Item type: Journal Article • Journal: South African Forestry Journal
    The mean-variance and expected value rules, along with stochastic dominance analysis are used to show how risk can be included in species-site selection decisions. Fourth-year volumes from a Eucalyptus species comparison trial in the south-eastern Transvaal were compared on different...
  9. Coumatetralyl Efficacy Trial against Rodents in a Young Pine Plantation at Linwood, Natal Midlands

    Item type: Journal Article • Journal: South African Forestry Journal
    Coumatetralyl rodenticide (in wax block formulation, trade name “Racumin rat and mouse bait blocks”) was tested at different densities for effectiveness against rodents in a stand of two to three-year-old Pinus patula in the Natal midlands. Live trapping for small...