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Preliminary assessment of bambara groundnut (Vigna subterranea L.) landraces for temperature and water stress tolerance under field conditions in Botswana
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Sesay --- Botswana College of Agriculture, Botswana T. Mpuisang --- Botswana College of Agriculture, Botswana T.S. Morake --- Department of Agricultural Research, Ministry of Agriculture, I. Al-Shareef --- School of Bioscience, Department of Plant and Crop Science, UK H.J. Chepete --- Botswana College of Agriculture, Botswana B. Moseki --- Department of Biological Sciences, BotswanaField experiments were conducted in 2006/07 and 2007/08 in Botswana to study the response of bambara groundnut to heat stress (2006/07 season) and to heat stress and soil moisture deficit stress (2007/08 season). In both seasons selected bambara groundnut landraces... -
Comparisons between laboratory and field results of frost tolerance of pines from the southern USA and Mesoamerica planted as exotics
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: GR Hodge --- Department of Forestry and Natural Resources, USA WS Dvorak --- Department of Forestry and Natural Resources, USA ME Tighe --- Department of Forestry and Natural Resources, USAAn artificial freezing study was conducted with 14 pine species and varieties from Mexico and Central America, and the southern and western USA. The pines chosen represented major commercial plantation species in the Southern Hemisphere such as Pinus caribaea var... -
Impact of pipe roughness on the performance of a water distribution network: A case study of the Westbury Network, Johannesburg, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Stephen Nyende-Byakika --- Department of Civil Engineering, South AfricaThe Westbury area, a suburb of the city of Johannesburg, is characterized by a very old pipe network, high water losses as well as high operating and maintenance costs. Consequently, a network rehabilitation project was proposed for the area, with... -
Frost tolerance of various Pinus pure species and hybrids
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Fanelesibonge Mabaso --- Department of Forest and Wood Science, South Africa Hannél Ham --- Department of Forest and Wood Science, South Africa André Nel --- Sappi Forests Research, Shaw Research Centre, South AfricaPinus species are widely planted by the South African forestry industry and are utilised for pulp, paper and saw timber products. Historically, Pinus patula Schiede ex Schltdl. et Cham. was the most widely planted commercial species in the summer rainfall... -
If the equal weighted portfolio is so great, why isn’t it working in South Africa?
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Byran H Taljaard --- , South Africa Eben Maré --- , South AfricaThis paper considers the recent underperformance of the equal weighted portfolio of South African Top 40 stocks relative to the market capitalisation weighted portfolio. It highlights the impact of the increased concentration of market capitalisation weights in the Top 40,...