Articles by Author: Ca Rolando

Search results for Ca Rolando

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  1. Measuring water stress in <em>Pinus patula</em> Schiede ex Schlect. &amp; Cham. seedlings

    Measuring water stress in <em>Pinus patula</em> Schiede ex Schlect. &amp; Cham. seedlings

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A pot trial was conducted to investigate measures of water stress for Pinus patula seedlings planted for commercial forestry in South Africa. The objectives were to determine the efficacy of different equipment for quantifying water stress, and the effect of...
  2. An assessment of factors affecting early survival and growth of <em>Pinus patula</em> and <em>Pinus elliottii</em> in the summer rainfall region of southern Africa

    An assessment of factors affecting early survival and growth of <em>Pinus patula</em> and <em>Pinus elliottii</em> in the summer rainfall region of southern Africa

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    High initial mortality of pine seedlings planted in commercial timber plantations in the summer rainfall region of southern Africa has motivated research into possible causes. The objectives of this study were to assess whether survival and initial growth of Pinus...
  3. The impact of vegetation control on the establishment of pine at four sites in the summer rainfall region of South Africa

    The impact of vegetation control on the establishment of pine at four sites in the summer rainfall region of South Africa

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Four trials designed to study the impact of intensive, selective and commercial vegetation control (operational) practices on pine establishment were implemented across an altitudinal and climatic range ofsites in the summer rainfall region ofSouth Africa. The trial sites incorporated one...
  4. Post-establishment vegetation control in a <em>Eucalyptus grandis</em> x <em>E. camaldulensis</em> stand

    Post-establishment vegetation control in a <em>Eucalyptus grandis</em> x <em>E. camaldulensis</em> stand

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    In eucalypt plantations, the effect of shading following canopy closure reduces the growth of competing vegetation. In some eucalypt stands full canopy closure is not achieved and the important characteristic of complete shading is lost. This results in stands with...
  5. Using chlorophyll fluorescence to determine stress in <em>Eucalyptus grandis</em> seedlings

    Using chlorophyll fluorescence to determine stress in <em>Eucalyptus grandis</em> seedlings

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Since several environmental factors affect the functioning of the photosynthetic system, the status of the photosynthetic apparatus is a good indicator of the plant in terms of stress and stress adaptation. The measurement of chlorophyll fluorescence with a portable fluorimeter...
  6. Survival and growth of <em>Pinus patula</em> at two years in response to harvest residue and pest management, in Mpumalanga, South Africa

    Survival and growth of <em>Pinus patula</em> at two years in response to harvest residue and pest management, in Mpumalanga, South Africa

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Previous research has indicated that the presence of harvesting residues, post-planting tern perature and rainfall, and insect pests and diseases, are among the main causes of mortality during re-establishment of Pinus patula stands. The main objectives of this work were...
  7. Critical water stress levels in <em>Pinus patula</em> seedlings and their relation to measures of seedling morphology

    Critical water stress levels in <em>Pinus patula</em> seedlings and their relation to measures of seedling morphology

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    A pot trial was implemented to determine the effect of soil water stress following transplanting on shoot water potential and stomatal conductance of Pinus patula seedlings. The relationship of seedling morphology to measures of water stress was also investigated. The...
  8. Regional vegetation management standards for commercial pine plantations in South Africa

    Regional vegetation management standards for commercial pine plantations in South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    During the 1990s a number of trials were implemented in the summer rainfall region of South Africa to determine both the short- and long-term impacts of competing vegetation on pine growth. Trial sites were selected across different physiographic regions such...
  9. Regional vegetation management standards for commercial <em>Eucalyptus</em> plantations in South Africa

    Regional vegetation management standards for commercial <em>Eucalyptus</em> plantations in South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    During the 1990s a number of trials were implemented in the summer-rainfall region of South Africa to determine both the short- and long-term impacts of competing vegetation on eucalypt growth. Trial sites were selected across different physiographic regions such that...
  10. Results from four <em>Pinus patula</em> water planting trials in the summer rainfall region of South Africa

    Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal
    Planting with water is used by some forestry companies in South Africa to reduce post-planting water stress. Four trials were implemented to test the response in survival of Pinus patula to water applied at planting. Two trials each were situated...