1 - 8 of 8 articles
Abstract The ecophysiological responses of two karoo shrubs to sheep browsing at different stocking rates were studied. The responses of a relatively unpalatable shrub (Pteronia tricephala), and of a shrub of greater palatability (Eriocephalus ericoides) were examined at high, intermediate and...
Abstract Vegetation change on different substrate types was measured over 15 years in semi‐arid Mopani Veld. Baseline data were collected in the terminal year (1982) of a decade of above‐average rainfall, whilst the period of monitoring was characterised by below‐average rainfall, with severe...
Abstract The response of wall barley (Hordeum murinum L) to clipping height at various stages of growth was investigated in the semi‐arid grassland of northeastern Jordan in the 1994/1995 and 1995/1996 growing seasons. Treatments included combinations of clipping heights (5 or 10 cm above soil...
Abstract Understory areas in semi‐arid rangelands can be a habitat for high‐yielding palatable grasses. Selective grazing of these grasses can result in their replacement by less palatable grass species, normally found in open areas. An experiment, at Matopos Research Station, sought to...
Abstract Experiments were conducted at three sites to study effects of different nitrogen (N) fertilisers (e.g. urea, ammonium nitrate, di‐ammonium phosphate and ammonium sulphate), applied at 45 kg N ha−1, with and without phosphorus (P), potassium (K) and sulphur (S), on pasture dry matter...
Abstract Experiments were conducted at three sites to examine effects of applying different nitrogen (N) fertilisers at 45 kg N ha−1, with and without phosphorus (P), potassium (K) and sulphur (S) on dairy pasture nutritive value and mineral content in autumn and spring. Pasture nutritive value...
Abstract Methods of determining stocking rate based on metabolic mass, animal type and biomass are reviewed in the context of equilibrial/disequilibrial paradigms. In South Africa, the calculation of ‘carrying capacity’ is based on conversion of animal species to metabolic mass equivalents. This...
Forage seed production. Volume 1: Temperate species D.T. Fairey & J.G. Hampton (eds). CAB International, Wallingford, UK ISBN 0 85199 190 4; pp. ix + 420
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