Articles by Keyword: Africa

Search results for Africa

We found 1047 results for you
  1. Site Relationships for Some Wood Properties of Pine Species in Plantation Forests of Southern Africa

    Item type: Journal Article • Journal: South African Forestry Journal
    Although genetic variation in wood properties of the three main pine species planted in southern Africa is high, there are important site relationships.
  2. Litterfall and Nutrient Release in Mature <em>Pinus radiata</em> in the South-western Cape

    Item type: Journal Article • Journal: South African Forestry Journal
    Fast-growing plantations of conifers have replaced areas of mediterranean shrubland in the south-western Cape. This study arises from the need to quantify the impacts of major changes in primary productivity, litterfall, and nutrient cycling in terms of the site utilisation...
  3. Parasitism of <em>Plutella xylostella</em> (Lepidoptera, Plutellidae): Field and laboratory observations

    Parasitism of <em>Plutella xylostella</em> (Lepidoptera, Plutellidae): Field and laboratory observations

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Investigations carried out at Alice and its rural environs in the Eastern Cape province of South Africa, showed that parasitoids affecting the diamondback moth Plutella xylostella (L.) (Lepidoptera: Plutellidae) were Cotesia plutellae, Apanteles eriophyes, Diadegma sp., Diadromus collaris, Oomyzus sokolowskii...
  4. Soil mineralogy research in South Africa, 1978 to 2002 - a review

    Soil mineralogy research in South Africa, 1978 to 2002 - a review

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Over 160 publications that contain mineralogical information were produced in the last 25 years of which about half were published in national and international journals. In many articles mineralogical data were presented but not discussed. Most studies were concerned with...
  5. Agricultural suitability of dune system and Limpopo Basin soils near Xai-Xai, Mozambique

    Agricultural suitability of dune system and Limpopo Basin soils near Xai-Xai, Mozambique

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Quaternary dune systems, as well as the Limpopo Basin near the rural city of Xai-Xai in southern Mozambique were studied concerning their soil fertility and sustainability for crop cultivation. Due to population growth, most sites, which are not overbuilt, are...
  6. Effect of irrigation scheduling on leaf yield of non-heading Chinese cabbage<break/>
(<em>Brassica rapa</em> L. subsp. <em>chinensis</em>)

    Effect of irrigation scheduling on leaf yield of non-heading Chinese cabbage<break/> (<em>Brassica rapa</em> L. subsp. <em>chinensis</em>)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A field experiment conducted on the Dzindi canal irrigation scheme in the north of South Africa demonstrated that non-heading Chinese cabbage (Brassica rapa L. subsp. chinensis) needed to be irrigated at least twice per week to maintain the water content...
  7. Growth regulator manipulation of apple bud dormancy progressions under conditions of inadequate winter chilling

    Growth regulator manipulation of apple bud dormancy progressions under conditions of inadequate winter chilling

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Elgin (34°S, 19°E; 305 m.a.s.l.), typical of South African apple growing regions, accumulates 745 Utah Chill Units (CU) p.a. The chilling requirement of ‘Golden Delicious’ apple (Malus xdomesf/ca Borkh.) is c.a. 1100 CU. Consequently, the chilling requirement is not satisfied...
  8. Astrological Signs and Personality Differences

    Astrological Signs and Personality Differences

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study examined the relationship between astrological signs and personality traits in 65 268 South African jobseekers (mean age = 24.8 years, females = 59%, Blacks = 98%). Participants completed the Basic Traits Inventory (Taylor and de Bruin, 2006). Contrastive...
  9. HIV/AIDS policies, practices and conditions in South African prisons: Criticisms and alternatives. Towards a research agenda

    HIV/AIDS policies, practices and conditions in South African prisons: Criticisms and alternatives. Towards a research agenda

    Item type: Journal Article • Journal: African Journal of AIDS Research
    The level of HIV infection in South African prisoners is unknown. However, given that 4.2 million citizens or 20% of the adult population are infected by HIV then the problem of infection within the prison system would seem to be...