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Refinement of a model describing forage production, animal production and profitability as a function of bush density in the false thornveld of the eastern cape
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: G.C. Stuart‐Hill --- Department of Agriculture and Water Supply (Eastern Cape Region),An existing model describing the influence of Aeacia karroo density on forage production, animal production and profitability is reviewed and amended to introduce recent research results. -
Plant palatability assessment and its implications for plant‐herbivore relations
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N. Owen‐Smith --- Resource Ecology Group, Department of Zoology, S.M. Cooper --- Resource Ecology Group, Department of Zoology,An objective method used to assess the palatability of the foliage of woody plant species to kudus, impalas and goats is described. Observations were made on the feeding behaviour of tame animals in the Nylslvey Nature Reserve in northern Transvaal... -
Impact of goat browsing on Aloe ferox in a South African savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L Breebaart R Bhikraj TG O'ConnorThe extent and impact of the utilisation of Aloe ferox by Boer goats during winter in a South African savanna was determined using a plant-based approach. All Aloe plants rooted within the transects were eaten by goats, with small plants... -
The coppicing ability of Acacia erubescens and Combretum apiculatum subsp. apiculatum in response to cutting
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G N SmitThe investigation was conducted in the Limpopo Province of South Africa. Twenty single stemmed trees of both Acacia erubescens and Combretum apiculatum subsp. apiculatum were randomly selected and five trees of each species were cut at heights of 5cm, 15cm,... -
Induced chemical defences in Colophospermum mopane trees
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: DCJ Wessels C van der Waal WF de BoerA field experiment was conducted in which Mopane (Colophospermum mopane) trees were subjected to three different canopy treatments:felling of trees at a mean height of 0.7m above ground level, felling at a height of 2m, or pruning of selected branches... -
Effects of pruning on the concentration of secondary metabolites in Colophospermum mopane leaves
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rudzani A Makhado --- Department of Biodiversity, South Africa Martin J Potgieter --- Department of Biodiversity, South Africa Wilmien J Luus-Powell --- Department of Biodiversity, South AfricaColophospermum mopane, commonly known as mopane, produces secondary metabolites during the growing season. However, there is still insufficient knowledge on the quantity of secondary metabolites and the effect of browsers on the concentration of secondary metabolites. A pruning experiment was...