Articles by Keyword: Tubular Culture System

Search results for Tubular Culture System

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  1. A COMPARISON OF MULTIPLE CONTAINER AND TUBULAR SYSTEMS FOR THE LARGE SCALE LABORATORY CULTURE OF UNICELLULAR ALGAE

    A COMPARISON OF MULTIPLE CONTAINER AND TUBULAR SYSTEMS FOR THE LARGE SCALE LABORATORY CULTURE OF UNICELLULAR ALGAE

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    It is pointed out that due to its construction a tubular system has many advantages, compared to a multiple container system. The most important being the ease of manipulation and the higher yield of algal material. The tubular system has...
  2. Field Performance of Micropropagated and Macropropagated <em>Eucalyptus</em> Hybrids

    Item type: Journal Article • Journal: South African Forestry Journal
    Plantlets derived, via both in vitro micropropagation and from rooted cuttings, from seven different Eucalyptus hybrid genotypes were assessed for their field performance in Kwambonambi, KwaZulu Natal. Tree survival, height, mean annual increment, diameter at breast height and size uniformity...
  3. The Blackwood Group System: its relevance for sustainable forest management in the southern Cape

    Item type: Journal Article • Journal: South African Forestry Journal
    The invasion status of Australian blackwood, Acacia melanoxylon, is assessed against its value as a commercial tree in the southern Cape forests. The species was introduced from Australian rain forests and planted extensively in the southern Cape forests since 1909...
  4. Influence of soil pH and fertilization on the dry matter production, chemical composition and digestibility of perennial grasses: I. <em>Anthephora pubescens</em> nees<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The influence of soil pH and fertilization (N, P and Zn) on the dry matter (DM) production, chemical composition (crude protein, P, K, Ca, Mg and Zn content) and organic matter (OM) digestibility of Anthephora pubescens Nees was evaluated in...
  5. Influence of soil PH and fertilization on the dry matter production, chemical composition and digestibility of perennial grasses : <em>II panicum maximum</em> JACQ<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The influence of soil pH and fertilization (?, ? and Zn) on the dry matter (DM) production, chemical composition (crude protein, P, K, Ca, Mg and Zn content) and organic matter (OM) digestibility of Panicum maximum Jacq. was evaluated in...
  6. ‘N vergelyking tussen <em>digitaria eriantha</em> steud. subsp. <em>eriantha</em> (smutsvingergras) en <em>eragrostis curvula</em> (schrad.) nees (oulandsgras) as hooigewasse vir skape<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Smutsvingergras‐ en oulandsgrashooi is by drie bemestingspeile, naamlik 30 kg N + 2,8 kg P ha‐1; 90 kg N + 8,3 kg P ha‐1 en 150 kg N + 13,8 kg P ha‐1 geproduseer. Die hooi is in alle voorgenoemde...
  7. How economic are the farming units of Leliefontein, Namaqualand?

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Nomadic pastoralism has been practised in Leliefontein for centuries. In 1984, the area was formally divided into 47 so‐called ‘economic units’ on the assumption that this agricultural approach would (a) promote development in the region and (b) introduce conservation management...
  8. Die evaluering van vier <em>Eragrostis curvula</em> ekotipes met weidende skape

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The evaluation of four Eragrostis curvula ecotypes with grazing sheep. Four ecotypes of Eragrostis curvula, namely, Cape Province 5, Ermelo, Pearston 204 and Makwassie 150 were evaluated in a grazing trial with sheep, at three stocking rates, during two growing...
  9. The Potch System: An approach to the management of semi‐arid grasslands in southern Africa

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    A host of grassland management systems have been published and recommended. Whereas earlier approaches to grassland management emphasized the systematic resting aspect, the systems published since 1966 have tended to stress the degree of utilization of the grassland sward. In...
  10. A comparison of culture methods for tobacco (<em>Nicotiana tabacum</em>) anthers

    A comparison of culture methods for tobacco (<em>Nicotiana tabacum</em>) anthers

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Three different anther culture methods for the South African tobacco cultivars C11 × WOSB and CDL 28 were tested. The yield of haploid plantlets produced using a solidified or double-layer medium was significantly higher than with the use of a...