Articles by Author: Jolanda Roux

Search results for Jolanda Roux

We found 199 results for you
  1. The future of exotic plantation forestry in the tropics and southern Hemisphere: Lessons from pitch canker

    The future of exotic plantation forestry in the tropics and southern Hemisphere: Lessons from pitch canker

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Exotic plantation forestry, particularly with Pinus and Eucalyptus species in the tropics and southern Hemisphere, has expanded dramatically during the course of the last Century. Success of these intensively managed plantations is largely attributed to the fact that trees have...
  2. Comparison of the tolerance of <em>Pinus patula</em> seedlings and established trees to infection by <em>Fusarium circinatum</em>

    Comparison of the tolerance of <em>Pinus patula</em> seedlings and established trees to infection by <em>Fusarium circinatum</em>

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Since the first appearance of Fusarium circinatum in South Africa in 1990, foresters have been challenged with poor field survival of Pinus patula seedlings at establishment. One of the best long-term solutions is to improve the genetic tolerance of P...
  3. Diseases on <em>Eucalyptus</em> species in Zimbabwean plantations and woodlots

    Diseases on <em>Eucalyptus</em> species in Zimbabwean plantations and woodlots

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Zimbabwe embarked on planting Eucalyptus species in the early 1900s. Based on a robust breeding programme, it has become a major source of seed for other countries in and outside Africa. Tree health surveys conducted on Eucalyptus in some east...
  4. The Eucalyptus shoot and leaf pathogen Teratosphaeria destructans recorded in South Africa

    The Eucalyptus shoot and leaf pathogen Teratosphaeria destructans recorded in South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Species of Teratosphaeria include some of the most important fungal pathogens of plantation-grown eucalypt trees. During routine disease surveys, symptoms and signs of leaf spot and blight were observed on the foliage of one-year-old E. grandis × E. urophylla hybrids...
  5. Diseases of eucalypts in the central and northern provinces of Mozambique

    Diseases of eucalypts in the central and northern provinces of Mozambique

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    In the mid-1970s, Mozambique embarked on several forestry projects to promote and establish large plantation areas with eucalypt trees. The planted species included Corymbia citriodora, Eucalyptus camaldulensis, E. saligna and E. tereticornis. Similar to other regions of the world, pests...
  6. Fungi and insects associated with <em>Euphorbia ingens</em> die-off in South Africa

    Fungi and insects associated with <em>Euphorbia ingens</em> die-off in South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Euphorbia ingens, landmark succulent trees in savannas of South Africa, have been dying in large numbers over the last 10–15 years. Initial studies conducted in the Limpopo province of South Africa revealed a diverse group of biotic agents including fungi,...
  7. Die Gebruik van die Kaapse Fynbos vir Weiding en die Probleme wat dit Skep

    Item type: Journal Article • Journal: South African Forestry Journal
    A land-use study in the Riviersonderend Mountain Catchment Area was undertaken to determine the effect of grazing on the fynbos vegetation. Alternative grazing systems were also investigated. It was clear that burning of the veld combined with grazing shortly thereafter...
  8. Analysis of Fires in Privately-Owned Plantations in the Republic of South Africa (01.04.1979 to 31.03.1985)

    Item type: Journal Article • Journal: South African Forestry Journal
    An analysis is presented of 1 596 fire reports submitted voluntarily during the period 01.04.1979 to 31.03.1985 in respect of 201 private plantations situated in the Transvaal (132 plantations) and Natal (67 plantations). Of these plantations 155 were insured and...