Articles by Author: Helen Nelson

Search results for Helen Nelson

We found 182 results for you
  1. The effect of micronutrients and gibberellic acid on the germination and metabolism of seedlings of <em>themeda triandra</em> forsk

    The effect of micronutrients and gibberellic acid on the germination and metabolism of seedlings of <em>themeda triandra</em> forsk

    Dormancy of the caryopsis of Themeda triandra Forsk was shown to be broken by the addition oí boron to the germination media. This effect was specific to boron, as no response was observed with zinc, copper, manganese, iron, cobalt and...
  2. A Review of the Role of Root Pruning for Containerised Forest Seedlings

    Item type: Journal Article • Journal: South African Forestry Journal
    The role of root pruning practices in containerised forestry seedling propagation is often ignored or poorly understood. Root pruning is used to reduce the incidence of potential container-induced deformities.
  3. Containerised Forest Seedling Root Defects Induced by Transporting or Transplanting

    Item type: Journal Article • Journal: South African Forestry Journal
    Two trials were conducted in an attempt to establish the effect of poor handling and transplanting techniques on subsequent root growth of containerised seedlings. Major root distortion was recorded where seedling root systems were transplanted with vertical pressure. Some distortion...
  4. Field and analytical drogue studies applicable to the St Helena Bay area off South Africa's west coast

    Field and analytical drogue studies applicable to the St Helena Bay area off South Africa's west coast

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Evidence is presented, from CODE drifters, of a strong time-dependent surface current flowing southwards from St Helena Bay. The local construction of the drifters is discussed and their performance against a likely background of circulation in the Bay is analysed...
  5. Die invloed van kort hittestremmings op groei en opbrengs van aartappels

    Die invloed van kort hittestremmings op groei en opbrengs van aartappels

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Plante van die kultivars Up-to-date en BP1 is in 'n glashuis gekweek en op verskillende tye gedurende die groeiperiode vir vyf opeenvolgende dae aan hoë temperature (35/25°C dag/nag) blootgestel. Die kultivars het eenders op die behandelings gereageer. Die hittestremmingsbehandelings het...
  6. DIE AFRIKAANSE VERTALING VAN NEDERLANDSE WERKWOORDE IN N KINDERVERHAAL

    DIE AFRIKAANSE VERTALING VAN NEDERLANDSE WERKWOORDE IN N KINDERVERHAAL

    Item type: Journal Article • Journal: South African Journal of Linguistics
    In hierdie artikel word 'n beskrywing gegee van die vertaling van werk-woorde in 'n Afrikaanse vertaling van 'n Nederlandse kinderboek. Daar word besin oor die korrelasie al dan nie tussen die Nederlandse en die Afrikaanse vorme. Ten slotte word 'n...
  7. Root compound nouns in Tshivenḓa

    Root compound nouns in Tshivenḓa

    Item type: Journal Article • Journal: South African Journal of African Languages
    There are nominal compounds in Tshivenḓa but unlike in other languages, there are no verbal compounds. Some nominal compounds are formed by combining two nouns (Noun + Noun) while other nominal compounds are formed by the noun followed by other...
  8. Religious inclination of Sigwavhulimu's poetry, with special reference to <em>Tsiko-Tshiphiri</em> (1971) and <em>Mirunzi ya Vhuvha</em> (1975)

    Religious inclination of Sigwavhulimu's poetry, with special reference to <em>Tsiko-Tshiphiri</em> (1971) and <em>Mirunzi ya Vhuvha</em> (1975)

    Item type: Journal Article • Journal: South African Journal of African Languages
    Religious themes tend to create a great deal of interest among literary scholars. An instance of this is the poetry by Sigwavhulimu as reflected in his anthologies titled Tsiko-Tshiphiri ‘Secret Creation’ (1971) and Mirunzi ya Vhuvha ‘Shadows of Being’ (1975)...
  9. Physical processes contributing to harmful algal blooms in Saldanha Bay, South Africa

    Physical processes contributing to harmful algal blooms in Saldanha Bay, South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The study synthesises current understanding of the predominant physical processes responsible for the seasonality of harmful algal blooms, notably Alexandrium catenella and Dinophysis spp., in the nearshore environment of Saldanha Bay on the west coast of South Africa. Saldanha Bay...
  10. Information on currents in the Cape Peninsula area, South Africa

    Information on currents in the Cape Peninsula area, South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Statistical information and some interpretative detail, based on currents measured at 28 mooring sites between Cape Point and Yzerfontein since 1981, are presented. The most striking feature is the continual presence of wavelike reversals of current close to the coast...