Browsing Doctoral Degrees (Agricultural Engineering) by Issue Date
Now showing items 1-20 of 37
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Crop water requirements for irrigation planning in South Africa.
(1988)Irrigation in 1980 accounted for approximately 52 per cent of the water consumed in Southern Africa. The need for planning water resources in the agricultural sector is therefore apparent. Much of Southern Africa's ... -
Combustion stress in compression-ignition engines.
(1989)South Africa produces alternative fuels from a number of different sources. The properties of a fuel are known to affect the nature of combustion in compression-ignition engines significantly, and have occasionally ... -
Automated processor for optimizing tractor operation.
(1991)The agricultural tractor is designed as a general purpose machine and consequently, does not perform all its tasks at maximum efficiency. Various methods of increasing the field performance of these vehicles have been ... -
The hydrological effects of fire in South African catchments.
(1994)Stream-flow and storm-flow in four small catchments were analysed by the paired catchment method for a response to fire. Two of the catchments were vegetated with over-mature fynbos (the indigenous scrub vegetation of ... -
A diagnostic quasi-dimensional model of heat transfer and combustion in compression-ignition engines.
(1989)Investigations into the combustion of alternative fuels in compression-ignition engines in South Africa have underlined the inadequacies of existing zero-dimensional combustion models. The major aspect of concern in ... -
A comprehensive qualitative and quantitative assessment of harvesting and other sugarcane supply chain disruptions within the Eston Mill supply area.
(2014)The Eston Mill, which was established in 1994, is the newest in the KwaZulu-Natal sugar belt. Like for most other mills, it can be argued that there are inefficiencies in the supply chain due to systemic issues, which ... -
An assessment of the feasibility of quality indicators for the postharvest deterioration of sugarcane (Saccharum officinarum L.)
(2014)Sugarcane deterioration remains one of the most important supply chain efficiency leverage points in the South African sugar industry. Cane quality has been identified as an issue that has the potential to improve the ... -
The preparation and novel application of diphosphorus xanthene family ligands in homogeneous catalysis.
(2011)Abstract available in print version. -
Non-point source pollution processes and connectivity modelling in the Mkabela Catchment, South Africa.
(2015)In South Africa water resources and water quality issues are becoming increasingly important as the country manages its scarce water resources. The National Water Act of South Africa Act 36 (1998) stipulates that water ... -
Development and application of decision support systems for improved planning and operation of large dams along the White Nile.
(2015)In this study the regulation of Lakes Victoria, Kyoga and Albert in East Africa are investigated with the objective of maximising hydropower production subject to system constraints for existing and future planned dams ... -
The development and evaluation of a performance-based standards approach for regulating the use of heavy vehicles in South Africa.
(2013)The regulation of the use of vehicles on the road network is aimed at ensuring acceptable safety and recovery of road maintenance costs, as well as minimising congestion, road wear, excessive noise and air pollution. The ... -
Estimating traffic induced sugarcane losses for various harvesting, loading and infield transport operations in South Africa.
(2016)Infield traffic has been understood to cause adverse field conditions for crop growth. Literature containing traffic induced yield responses for sugarcane was reviewed and synthesised to better estimate the impact of infield ... -
Using system dynamics to explore the poor uptake of irrigation scheduling technologies in a commercial sugarcane community in South Africa.
(2016)Abstract available in PFD file. -
Effect of maturity and postharvest handling of prunus persica ‘landrace’ produced in KwaZulu-Natal: case study of physicochemical properties, tunnel solar drying and quality of processed products.
(2017)Farmers in KwaZulu-Natal produce peach fruit. However, they are faced with overwhelming losses of the fruit due to lack of proper handling techniques, skills and facility during postharvest. In addition, these farmers have ... -
Development and optimization of an integrated post-harvest management system for the handling and storage of fresh tomatoes in South African supply chains.
(2017)Abstract available in PDF file. -
Variations in growth yield and metabolities of African ginger (Siphonochilus Aethiopicus) in response to irrigation regimes and nitrogen levels.
(2017)Medicinal plants are valuable natural resources used as traditional medicine and have economic significance. African ginger (S. aethiopicus) (Schweinf.) B.L. Burtt is one of the most important rhizomatous plants, ... -
Technological viability of coffee husk ash, soil rich in koalinite-ferrinatrite and koalinite-geothite for the adsorptive removal of chromium (VI) from industrial wastewater = Ukusebenziseka kobuchwepheshe bomlotha wekhofi i-husk, inhlabathi enothile ngeKaolinite-Firrinatrite kanye neKaolinite-Geothite ekukhucululeni okusansimbi okuphuma emanzinimfucuza yasezimbonini.
(2017)ABSTRACT: Most industries in developing countries discharge a high amount of untreated wastewater, containing toxic chemicals, into nearby water bodies. Heavy metals and chemicals above permissible levels can be emitted ... -
Value chain analysis and determinants of production and consumption of African leafy vegetables in Limpopo Province of South Africa.
(2018)There has been a decline in the production, utilization and diversity of African leafy vegetables (ALVs) such as cowpea leaves, pumpkin leaves, amaranth, collard greens, mustard greens, etc., which poses a threat to the ... -
Modelling of micro-environment inside evaporatively and coolbot cooled stores using computational fluid dynamics models and changes in quality of stored tomatoes.
(2018)The postharvest loss of fresh produce is a global problem, with the tomato fruit being subjected to a 30-50% loss of total production after harvest. The cost and the technicality of modern technology, including mechanical ... -
Vachellia sieberiana var. woodii a high-altitude encroacher: the effect of fire, frost, simulated grazing and altitude.
(2018)ABSTRACT There is increasing evidence that savannas and grasslands throughout the world are experiencing bush encroachment. The replacement of grassy biomes with woody biomes has serious consequences for net primary ...