Browsing Doctoral Degrees (Grassland and Rangeland Science) by Title
Now showing items 1-20 of 33
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An assessment of Coastcross II Bermudagrass and kikuyu for growing out young beef animals.
(1983)The immediate aim of this study was to relate herbage availability, liveweight gain and stocking rate to one another under continuous and rotational grazing so that management recommendations could be formulated for ... -
Beef production from kikuyu and Italian ryegrass.
(1985)Four grazing trials to characterise cultivated pastures, in terms of beef production, were conducted in Bioclimate 3 of Natal. Dual purpose and British beef type cows were run on kikuyu at stocking rates ... -
The bioeconomic implications of various stocking strategies in the semi- arid savanna of Natal.
(1994)Climatic and market uncertainty present major challenges to livestock producers in arid and semi-arid environments. Range managers require detailed information on biological and economic components of the system in order ... -
Browse : quantity and nutritive value of evergreen and deciduous tree species in semi-arid Southern African savannas.
(2012)Browse selection, intake, utilisation, palatability, quality and production are tightly linked and need to be considered together in trying to improve our understanding of browsing dynamics and the interactions between ... -
Bushclump-grass interactions in a south-east African savanna : processes and responses to bush control.
(1996)The objective of this study was to investigate woody-grass interactions and the initial response of vegetation to bush control in the mesic Eastern Cape bushclump savannas. The occurrence of multi-species bushclumps, ... -
Control of bush encroachment with fire in the arid savannas of Southeastern Africa.
(1983)No abstract available. -
Determinants of community composition and diversity in KwaZulu-Natal mesic grasslands : evidence from long-term field experiments and pot and plot competition experiments.
(2003)A predictive understanding of plant community response to various environmental influences (e.g. type, timing and frequency of disturbance, site productivity, fertilization, etc.) is a general goal of plant ecology. This ... -
Development and testing of a remote controlled oesophageal fistula valve for goats.
(1993)A remote control sampling technique was developed for the collection of oesophageal fistula samples from goats. Number and size of samples can be varied and collected throughout the day without disturbing the animal's ... -
The development of cultivated dryland grass pastures for livestock production in the high rainfall areas of Rhodesia.
(1979)No abstract available. -
The development of stocking rate models for three veld types in Natal.
(1990)The overall objective was to develop stocking rate models for three veld types. namely the Lowveld. the Southern Tall Grassveld and the Natal Sour Sandveld. in Natal. Sub-objectives were to determine ... -
Drivers of vegetation change in the eastern Karoo.
(2019)The Nama-Karoo Biome occupies much of the western central region of South Africa and transitions into the Grassland Biome along its eastern boundary along a gradual ecotone. The area is characterised by hot summers and ... -
Dry woodland and savanna vegetation dynamics in the Eastern Okavango Delta, Botswana.
(2012)The Okavango Delta is an extremely dynamic system with variable vegetation comprised of permanent swamps, seasonal swamps, dry islands, floodplains and dry grassland, savanna and woodland. The system is largely driven ... -
Ecological effects of fire in the montane grasslands of Natal.
(1985)Although controlled burning has been used to manage Highland Sourveld grasslands, little was known of its effects on the vegetation. This study examined the effects of past fire treatments on veld condition,species ... -
The effect of high-density, short-duration stocking on soils and vegetation of mesic grassland in South Africa.
(2018)High-density, short-duration stocking (HDG) is currently gaining popularity amongst farmers in South African mesic grasslands but little is known about its potential impact on soil properties and plant species composition, ... -
Effects of herbivores, fire and harvesting on the population dynamics of Acacia drepanolobium sjoestedt in Laikipia, Kenya.
(2007)Effects of herbivory, fire, and tree harvesting on Acacia drepanolobium were studied using plant population dynamics as the philosophical basis of research. Specifically, growth rates, chrono-sequence of re-growth, biomass ... -
An evaluation of irrigated ryegrass/clover pastures for fat lamb production in the Highland Sourveld of Natal.
(1986)The primary objective of this study was to increase net farm income in the Highland Sourveld of Natal by developing pasture based fat lamb production systems. Secondary objectives included (a) determination of ... -
Factors affecting savanna tree sapling recruitment.
(2013)Savannas are globally important ecosystems characterized by the coexistence of trees and grasses. Woody plants, which are slow-growing dominant life forms, influence the physiognomic structure and function of savanna ... -
Host specificity in South African mistletoes.
(2013)Mistletoes intimately connect to their host trees with a haustorium that allows them to access nutrients and water. Mistletoes in South Africa vary greatly in their degree of host specificity. Most species occur on a wide ... -
Impact of stocking rate, livestock type and livestock movement on sustainable utilisation of sourveld.
(1999)Data collected between 1992/93 and 1996/97 from two long-term grazing trials were used to investigate the interaction between grazing animals and veld grass. In the first trial, the impacts of stocking rate and time of ... -
The influence of fertiliser nitrogen on soil nitrogen and on the herbage of a grazed kikuyu pasture in Natal.
(1994)The work reported in this thesis was designed to develop a better understanding of the fate of fertiliser nitrogen applied to a tropical pasture under field conditions, with the eventual objective of ...