Articles by Keyword: Salinity

Search results for Salinity

We found 61 results for you
  1. On the concept of leaching requirement for salinity control

    On the concept of leaching requirement for salinity control

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The concept of irrigating in excess of plant water requirement to restrict soil profile salinity to acceptable limits is well established. The tolerable upper salinity limit is used to calculate the leaching requirement. This upper limit is determined mainly by...
  2. Interaction of nitrogen fertilization and irrigation water salinity on growth of maize (<em>Zea mays</em> L.) in a two-way line-source sprinkler system

    Interaction of nitrogen fertilization and irrigation water salinity on growth of maize (<em>Zea mays</em> L.) in a two-way line-source sprinkler system

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Maize was planted in a line-source sprinkler experiment in the Negev Desert in Israel. A double line-source system was used with one line source at right angles to the other. It was possible to create a gradient of salt concentration...
  3. Influence of intensive irrigation and cultivation on selected soil properties: Arid southern Namibia

    Influence of intensive irrigation and cultivation on selected soil properties: Arid southern Namibia

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The effect of long-term (25 years) intensive irrigation on selected soil properties of the Hardap Irrigation Scheme was determined by comparing soil profiles in irrigated and adjacent non-irrigated areas. The major differences detected between five soil pairs were rubification of...
  4. 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...
  5. Tolerance of six Namaqualand pioneer species to saline soil conditions

    Tolerance of six Namaqualand pioneer species to saline soil conditions

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Saline soils pose a great problem to reclamation of mined areas in arid regions. Experiments were carried out in order to determine the tolerance of six Namaqualand pioneer species to varying levels of salinity. Both perennial and ephemeral species were...
  6. Effects of <em>Casuarina-</em>amended soil on selected soil and citrus properties

    Effects of <em>Casuarina-</em>amended soil on selected soil and citrus properties

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Effects of beefwood (Casuarina cunninghamiana Miq.) leaf residues were evaluated on soil pH, soil electrical. conductivity, growth and foliar nutrient ions of rough lemon (Citrus jambhiri Hush) seedlings in two greenhouse experiments. Casuarina- amended soil reduced soil pH, root weight,...
  7. Acidic iron oxide waste as a conditioner for calcareous soils

    Acidic iron oxide waste as a conditioner for calcareous soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A fine-grained iron oxide (hematite, (α-Fe2O3), containing 1.2% hydrochloric acid by mass, is the main by-product of an acid recovery plant at Saldanha Bay. The alkalinity of calcareous soils in this semi-arid region causes plant deficiencies in many trace elements,...
  8. Effects of sodium sulphate, sodium chloride and manganese sulphate on kikuyu (<em>Pennisetum clandestinum)</em> growth and ion uptake

    Effects of sodium sulphate, sodium chloride and manganese sulphate on kikuyu (<em>Pennisetum clandestinum)</em> growth and ion uptake

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Irrigation with saline water is increasingly practised yet an understanding of plant response to different salt types remains largely elusive. Our study investigated the effects of irrigation with simulated effluent containing three salts on the growth and composition of a...
  9. <em>Amaranthus tricolor</em> L. leaf yields affected by salinity, harvesting stage and harvesting methods

    <em>Amaranthus tricolor</em> L. leaf yields affected by salinity, harvesting stage and harvesting methods

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Single Amaranthus tricolor seedlings were transplanted into containers filled with 5 I river sand and were fertigated with a ‘drain to waste’ system. Plants were grown in the open under warm summer conditions. Four to six daily applications of nutrient...
  10. Regional sustainability in table grape production on saline soils

    Regional sustainability in table grape production on saline soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A study was done in South Africa to investigate the state of the soil salt content and its effect on plant growth on a regional rather than a point basis. The study site went through a development phase since 1996...