Articles by Author: Simon Madyiwa

Search results for Simon Madyiwa

We found 57 results for you
  1. Mineralisation of organic fertilisers used by urban farmers in Harare and their effects on maize (<em>Zea mays</em> L.) biomass production and uptake of nutrients and heavy metals

    Mineralisation of organic fertilisers used by urban farmers in Harare and their effects on maize (<em>Zea mays</em> L.) biomass production and uptake of nutrients and heavy metals

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Nutrient release patterns and heavy metal contamination risks associated with animal manure and organic municipal wastes used as basal fertilisers are largely unknown in Zimbabwe. Carbon, nitrogen and phosphorus mineralisation patterns were determined in a 56-day incubation experiment of domestic...
  2. Yield, nutrient and heavy metal uptake of leafy vegetables grown in sewage sludge and poultry manure amended soils

    Yield, nutrient and heavy metal uptake of leafy vegetables grown in sewage sludge and poultry manure amended soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Urban farmers in Harare grow vegetables in soils fertilised with poultry manure (PM) and sewage sludge (SS). Feed and storage management influence nutrient supply of these organic amendments. Nitrogen mineralisation of PM and SS were determined in a non-leaching and...
  3. Essential Oils in the Leaf, Bark and Seed of Mopane (<em>Colophospermum mopane</em>)

    Item type: Journal Article • Journal: South African Forestry Journal
    Essential oils were obtained from the mature leaves, bark and seed of mopane (Colophospermum mopane). Over 50 compounds were detected and the major compound from all three plant sources was found to be α-pinene. The oil from the bark was...
  4. Editorial

    Editorial

    Item type: Journal Article • Journal: South African Journal of Philosophy
  5. Editorial

    Editorial

    Item type: Journal Article • Journal: South African Journal of Philosophy
  6. Editorial

    Editorial

    Item type: Journal Article • Journal: South African Journal of Philosophy
  7. Am I My Brother's Keeper? On Personal Identity and Responsibility

    Am I My Brother's Keeper? On Personal Identity and Responsibility

    Item type: Journal Article • Journal: South African Journal of Philosophy
    The psychological continuity theory of personal identity has recently been accused of not meeting what is claimed to be a fundamental requirement on theories of identity – to explain personal moral responsibility. Although they often have much to say about...
  8. Breeding biology, extra-pair birds, productivity, siblicide and conservation of the Madagascar Fish Eagle

    Breeding biology, extra-pair birds, productivity, siblicide and conservation of the Madagascar Fish Eagle

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Watson, R.T., Razafindramanana, S., Thorstrom & Rafanomezantsoa, S. 1999. Breeding biology, extra-pair birds, productivity, siblicide and conservation of the Madagascar Fish Eagle. Ostrich 70 (2): 105–111.
  9. Peaks and Valleys in Motzkin Paths

    Peaks and Valleys in Motzkin Paths

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    A Motzkin path is a non-negative lattice path in N2 starting at the origin, where only three types of steps are allowed: the diagonal up step (1, 1) called u, the diagonal down step (1, −1) called d and the...
  10. Morals, Metaphysics and The Method of Cases

    Morals, Metaphysics and The Method of Cases

    Item type: Journal Article • Journal: South African Journal of Philosophy
    In this paper I discuss a set of problems concerning the method of cases as it is used in applied ethics and in the metaphysical debate about personal identity. These problems stem from research in social psychology concerning our access...