Articles by Author: Reinier Moolman

Search results for Reinier Moolman

We found 14 results for you
  1. Resilience and suicide ideation: Coping mediator-moderator effects among adolescent learners

    Resilience and suicide ideation: Coping mediator-moderator effects among adolescent learners

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    The current study aimed to investigate the influence of coping on the relationship between resilience and adolescent suicide ideation among secondary learners in the Free State Province, South Africa (n = 495; female = 61.6%; black = 55%, white =...
  2. The defective verbs—<underline>-Thi</underline> and <underline>-Sho</underline> in Zulu

    The defective verbs—<underline>-Thi</underline> and <underline>-Sho</underline> in Zulu

    Item type: Journal Article • Journal: South African Journal of African Languages
    Why these verbs are to be regarded as defective. The problem: The fact that these two verbs have both a common and separate fields of meaning often confuses the speaker and may give rise to unacceptable usage. Their common field...
  3. Spatial variability of two selected soil properties in a semi- arid subcatchment of the Lower Great Fish River

    Spatial variability of two selected soil properties in a semi- arid subcatchment of the Lower Great Fish River

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The variability of the soluble salt content and the textural composition of the soil were investigated in a 28-ha sub-catchment of the Ecca River, a tributary of the Great Fish River. The frequency distribution of the soluble salts in the...
  4. Characterizing the hydraulic properties of a semi-arid catchment by means of sorptivity measurements and scaling theory

    Characterizing the hydraulic properties of a semi-arid catchment by means of sorptivity measurements and scaling theory

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The variability of soil sorptivity within a semi-arid catchment was investigated on a macro- (28 ha) and microscale (16 m2). In the macroscale study, sorptivity was measured at 176 sites using a falling hydraulic head technique. The mean sorptivity of...
  5. An evaluation of simplified field methods used for estimating soil hydraulic conductivity

    An evaluation of simplified field methods used for estimating soil hydraulic conductivity

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Hydraulic properties of three soils from the western Cape and two from the eastern Cape were studied. Water content (θ) data, obtained during drainage of field plots were used to estimate soil hydraulic conductivity [K(θ)] using five methods based on...
  6. The effect of ridging on the soil water status of a waterlogged vineyard soil

    The effect of ridging on the soil water status of a waterlogged vineyard soil

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    In a field trial conducted in a vineyard on a low-lying hydromorphic soil, it was established that ridging increased the depth from the soil surface to the water table. Ridging did not lower the level of the water table, but...
  7. Ridging—a soil preparation practice to improve aeration of vineyard soils

    Ridging—a soil preparation practice to improve aeration of vineyard soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Waterlogged soil conditions during early spring can result in poor grapevine performance. In this study the effect of ridging as a method of soil preparation on the depth to the water table, soil air composition and vine reaction, as indicated...
  8. Effect of ridging on the temperature regime of a waterlogged vineyard soil

    Effect of ridging on the temperature regime of a waterlogged vineyard soil

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Waterlogged conditions in hydromorphic soils during spring cause low temperatures which may restrict grapevine performance. Ridging is a soil preparation method that can improve internal drainage in the root zone. Temperature measurements showed that ridging tended to increase temperatures in...
  9. Calibration models for interpretation of soil salinity measurements using an electromagnetic induction technique

    Calibration models for interpretation of soil salinity measurements using an electromagnetic induction technique

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A commercially available salinity sensor (model EM-38 of Geonics Ltd., Canada) has been developed for diagnosing and quantifying soil salinity in the field. There is a need, however, to calibrate the instrument reading against a more commonly used measure of...
  10. CHANGES IN URBAN RESIDENTIAL LAND IN THE RIETSPRUIT CATCHMENT, SOUTHERN TRANSVAAL

    CHANGES IN URBAN RESIDENTIAL LAND IN THE RIETSPRUIT CATCHMENT, SOUTHERN TRANSVAAL

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    Informal settlements have become an important and rapidly-expanding component of urban development in South Africa. In the Rietspruit catchment, south-west of Johannesburg, average growth rates in urban land cover of up to 2.7 km2 per year (1972–1991) were measured from...