Articles by Keyword: Opportunistic Pathogens

Search results for Opportunistic Pathogens

We found 16 results for you
  1. 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,...
  2. The role of insect damage in the colonization of groundnut (<em>Arachis hypogaea</em> L.) pods by fungi

    The role of insect damage in the colonization of groundnut (<em>Arachis hypogaea</em> L.) pods by fungi

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The incidence of fungal infection in insect-damaged and healthy pods and the resultant colonization of kernels was determined from commercial fields at four localities over a period of two seasons. Based on number of colonies per 100 plates, the order...
  3. Post establishment survival of <em>Pinus patula</em> in Mpumalanga, one year after planting

    Post establishment survival of <em>Pinus patula</em> in Mpumalanga, one year after planting

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Recent evidence indicated that the pathogen Fusarium circinatum might be contributing significantly to post-planting mortality. Consequently, sixteen experimental sample plots, widely distributed over many localities in Mpumalanga, were established over two growing seasons to quantify the extent of pest and...
  4. Fungi associated with <em>Eichhornia crassipes</em> in South Africa and their pathogenicity under controlled conditions

    Fungi associated with <em>Eichhornia crassipes</em> in South Africa and their pathogenicity under controlled conditions

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Eichhornia crassipes Mart. Solms-Laubach (Pontederiaceae), water hyacinth, continues to be the world's worst aquatic weed. In South Africa, considerable research has been conducted on biological control agents associated with water hyacinth, with the release of six arthropods and one fungus,...
  5. Effect of ectomycorrhizal fungi in the protection of <em>Uapaca kirkiana</em> seedlings against root pathogens in Zimbabwe

    Effect of ectomycorrhizal fungi in the protection of <em>Uapaca kirkiana</em> seedlings against root pathogens in Zimbabwe

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Investigations carried out on the use of ectomycorhhizal fungi in the management of Uapaca kirkiana root diseases caused by three pathogens (Rhizoctonia solani, Phytophthora parasitica and Pseudomonas solani) revealed that different mycorrhizal fungi vary in their ability to protect roots...
  6. Pruning quality affects infection of Acacia mangium and A. crassicarpa by Ceratocystis acaciivora and Lasiodiplodia theobromae

    Pruning quality affects infection of Acacia mangium and A. crassicarpa by Ceratocystis acaciivora and Lasiodiplodia theobromae

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Pruning (singling) is a common silvicultural practice in commercial Acacia plantations because these trees tend to have multiple stems. The wounds resulting from pruning are susceptible to infection by pathogens. Ceratocystis acaciivora and Lasiodiplodia theobromae have been shown recently to...
  7. Global forest research, science education and community service positively impacted by a unique Centre of Excellence in Tree Health Biotechnology

    Global forest research, science education and community service positively impacted by a unique Centre of Excellence in Tree Health Biotechnology

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Despite their importance in ecosystems and biodiversity, very little is known about the health of trees in the native environments of South Africa. The vision and primary goal of the Centre of Excellence in Tree Health Biotechnology (CTHB) is therefore...
  8. <em>Ceratocystis</em> species: emerging pathogens of non-native plantation <em>Eucalyptus</em> and <em>Acacia</em> species

    <em>Ceratocystis</em> species: emerging pathogens of non-native plantation <em>Eucalyptus</em> and <em>Acacia</em> species

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    The fungal genus Ceratocystis includes many economically important tree pathogens. Until the 1980s, this genus of plant pathogens was not known from non-native plantation-grown forestry species. However, during the course of the last 20 years, a number of reports have...
  9. Health and nutrition of plantation eucalypts in Asia

    Health and nutrition of plantation eucalypts in Asia

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Understanding site fertility constraints has lifted productivity of eucalypt plantations in East and South-east Asia through targeted application of inorganic fertilisers. Whilst most attention has been given to the supply of nitrogen and phosphorus in silvicultural prescriptions, and inoculation with...
  10. Eucalypt pests and diseases: growing threats to plantation productivity

    Eucalypt pests and diseases: growing threats to plantation productivity

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Plantations of eucalypts (species of Eucalyptus and Corymbia), particularly in the tropics and Southern Hemisphere, have expanded dramatically during the course of the last 100 years. The nature of these plantations has changed substantially as selection, breeding, hybridisation, vegetative propagation...