Articles by Keyword: Economics

Search results for Economics

We found 26 results for you
  1. A comparison of highveld fodders and fodder flows for growing out long yearling steers

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    A fodder flow/animal experiment 40,8 ha in extent (7,5 ha irrigated), with 19 paddocks, was carried out over a two and a half year period.
  2. The regrowth of <em>Colophospermum mopane</em> following clearing

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The recovery of cleared Colophospermum mopane thicket in the eastern Transvaal lowveld, to a level where its effect on grass production is similar to that in the pre‐cleared state, occurs within fourteen years. Based on certain assumptions, the ‘effective duration’...
  3. The complemental role of dryland cultivated pastures in market‐related beef production from semi‐arid rangeland

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Rangeland condition is a decisive factor in determining the income:cost ratio of production and hence in the profitability of any beef production enterprise. By maintaining and/or improving rangeland condition, the beef producer can buffer himself against low profitability. Cultivated pastures...
  4. Costing the initial clearance of alien <em>Acacia</em> species invading fynbos vegetation

    Costing the initial clearance of alien <em>Acacia</em> species invading fynbos vegetation

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The costs of the initial clearing of mixed stands of the alien Acacia cyclops and A. saligna invading fynbos vegetation were compared in a replicated trial on the Pella Fynbos Research Site. Costs were estimated using a regression-based model of...
  5. Long and short term effects of tillage systems on grain yield, the incidence of diseases and production costs for maize

    Long and short term effects of tillage systems on grain yield, the incidence of diseases and production costs for maize

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The effect of four tillage systems on grain yield of maize, incidence of diseases and production costs was investigated for a Hutton soil in the Natal Midlands from 1982 to 1995. The four tillage systems were no-till (NT), reduced tillage...
  6. Observations on the linefish resources of Namibia, 1990?2000, with special reference to West Coast steenbras and silver kob

    Observations on the linefish resources of Namibia, 1990?2000, with special reference to West Coast steenbras and silver kob

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The Namibian linefishery is a multisector fishery, with recreational and commercial sectors targeting overlapping species. Prior to 1990, catch data were recorded for the boat sector, but little research was done on the population dynamics of any of the species...
  7. An assessment of the recreational fishery in the St Lucia estuarine system, KwaZulu-Natal, South Africa

    An assessment of the recreational fishery in the St Lucia estuarine system, KwaZulu-Natal, South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    St Lucia is one of the largest estuarine systems in Africa, and attracts thousands of anglers each year. Catchcard data from the National Marine Linefish System for the years 1986–1999 were analysed to determine catch composition, catch per unit effort...
  8. Case studies on the socio-economic characteristics and lifestyles of subsistence and informal fishers in South Africa

    Case studies on the socio-economic characteristics and lifestyles of subsistence and informal fishers in South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    To develop a management strategy for informal fishers, a necessary first step is information about the nature of these fishers, their numbers and their socio-economic status. To accomplish this, a survey of socio-economic conditions and use of marine resources was...
  9. Socio-economic characteristics of gillnet and beach-seine fishers in the Western Cape, South Africa

    Socio-economic characteristics of gillnet and beach-seine fishers in the Western Cape, South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Data collected by questionnaire and telephone surveys conducted during 1998 and 1999 are used to describe the socio-economic characteristics of inshore netfishers in the Western Cape. Approximately two-thirds of netfishers work or have worked in other fishing sectors and a...
  10. Forecasting volume and economic gains from intensive plantation management using different response curves

    Forecasting volume and economic gains from intensive plantation management using different response curves

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Proponents of intensive plantation management do not all use the same type of response curves when predicting future volume gains. As a result, some believe that continuously increasing the intensity of management will increase landowner profits and reduce the unit...