Articles by Keyword: Lt Em Gt Prunus Africana Lt Em Gt

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  1. Toward sustainable harvesting of Africa's largest medicinal plant export (<em>Prunus africana</em>): a case study in Tanzania

    Toward sustainable harvesting of Africa's largest medicinal plant export (<em>Prunus africana</em>): a case study in Tanzania

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Global demand for treating prostate disorders with Prunus africana bark extract has made P. africana Africa's largest medicinal plant export. Unsustainable harvesting practices can lead to local extirpations of this multipurpose tree. Survey research targeting P. africana harvesters in a...
  2. Effect of a foliar application of paclobutrazol in autumn on the reproductive development of ‘Songold’ plum

    Effect of a foliar application of paclobutrazol in autumn on the reproductive development of ‘Songold’ plum

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A foliar application of paclobutrazol (1- (4-chlorophenyl) −4,4-dimethyl-2- (1,2,4- triazol-1-yl) pentan-3-ol) at 250 or 500 mg dm−3 a.i. in autumn, or late winter applications of dinitro-o-cresol oil emulsion (DNOC) in water at 3% v/v, increased the percentage of ‘Songold’ plum...
  3. Resistance of sorghum hybrids to ergot caused by <em>Claviceps africana</em>

    Resistance of sorghum hybrids to ergot caused by <em>Claviceps africana</em>

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Thirty-one sorghum hybrids were evaluated for ergot ‘escape’ resistance at Bethlehem and Potcherstroom during the 1996/97 and 1997/98 seasons. Trials were designed so that flowering and artificial inoculation occurred over a range of flowering dates and thus, ergot potentials Non-linear...
  4. Efficacy of fungicides in the control of ergot (<em>Claviceps africana</em>) in sorghum <em>(Sorghum bicolor</em>) hybrid seed production

    Efficacy of fungicides in the control of ergot (<em>Claviceps africana</em>) in sorghum <em>(Sorghum bicolor</em>) hybrid seed production

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Ergot is a disease of unfertilized sorghum ovaries. It is particularly prevalent in seed production where losses may average 10–20% per annum. Protection of the ovary during the critical period of flower opening to fertilization could reduce losses and increase,...
  5. High-density orchards improve the quality of ‘Songold’ plums from lower, more shaded canopy positions

    High-density orchards improve the quality of ‘Songold’ plums from lower, more shaded canopy positions

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Gel breakdown is a major postharvest problem in ‘Songold’ plums (Prunus salicina Lindl.) that is exacerbated in fruit harvested from lower canopy positions in large trees. Modern high-density orchards with small trees aggressively address this problem through improved light distribution...
  6. Effect of timing and concentration of rest breaking agents on budburst in ‘Bing’ sweet cherry under conditions of inadequate winter chilling in South Africa

    Effect of timing and concentration of rest breaking agents on budburst in ‘Bing’ sweet cherry under conditions of inadequate winter chilling in South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The effect of timing of various rest breaking agents (RBAs) on vegetative and floral budburst, and production efficiency was investigated on 4-year-old ‘Bing’ sweet cherry trees on ‘Gisela® 5’ rootstock. Two experiments were conducted, near Clarens (28°28’S; 28°19’E, 1860 m.a.s.l)...
  7. Spatial Variability in the Mudprawn <em>Upogebia Africana</em> on the South-east Coast of South Africa

    Spatial Variability in the Mudprawn <em>Upogebia Africana</em> on the South-east Coast of South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    A nested sampling design was used to examine the variability in density, biomass, sex ratio and size of the estuarine mudprawn Upogebia africana in six estuaries on the south-east coast of South Africa. The objectives were to test the general...
  8. Assessment of the abundance and distribution of burrowing sandprawns and mudprawns (<em>Callichirus</em> and <em>Upogebia</em> species) in Langebaan Lagoon, South Africa

    Assessment of the abundance and distribution of burrowing sandprawns and mudprawns (<em>Callichirus</em> and <em>Upogebia</em> species) in Langebaan Lagoon, South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    A survey of sandprawns and mudprawns was undertaken in intertidal and subtidal zones in Langebaan Lagoon, West Coast National Park, South Africa, to determine their stock status and to gain an understanding of the spatio-temporal patterns in abundance and distribution...
  9. Stem biomass and volume models of selected tropical tree species in West Africa

    Stem biomass and volume models of selected tropical tree species in West Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Estimating tree volume and biomass constitutes an essential part of the forest resources assessment and the evaluation of the climate change mitigation potential of forests through biomass accumulation and carbon sequestration. This research article provides stem volume and biomass equations...
  10. Macrofaunal community structure in the littoral zone of a freshwater-deprived, permanently open Eastern Cape estuary

    Macrofaunal community structure in the littoral zone of a freshwater-deprived, permanently open Eastern Cape estuary

    Item type: Journal Article • Journal: African Zoology
    Spatial patterns in the macrofauna community structure within four distinct zones of the permanently open, freshwater-deprived Kariega Estuary on the southeastern coastline of southern Africa were investigated in March–May 2010. The zones within the littoral zone comprised a band of...