Browsing School of Agricultural, Earth and Environmental Sciences by Issue Date
Now showing items 21-40 of 2011
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Spatial concept development and the teaching of geography in primary schools.
(1980)Until recently educational geographers have concerned themselves largely with questions regarding those parts of the discipline which should be included in school and university curricula (Fitzgerald, 1969; Thomas, ... -
An epidemiological analysis of the Phytophthora and Alternaria blight pathosystem in the Natal Midlands.
(1980)The history of the development in Natal of a forecasting service to warn of outbreaks of late blight disease caused by Phytophthora infestans is presented. The late blight pathogen and Alternaria solani, the causal ... -
Response of broiler chickens to dietary lysine, methionine and metabolisable energy concentrations.
(1981)No abstract available. -
Measurement of water potential using thermocouple hygrometers.
(1982)Theory predicts that the time dependent voltage curve of a thermocouple psychrometer where there is no change in output voltage with time during the evaporation cycle defines the wet bulb temperature T[w] corresponding ... -
Soilless cultivation of cucumbers and tomatoes under protection in Natal.
(1982)No abstract available. -
A social geography of Merebank, with special reference to access and amenities.
(1983)The main aim of this study is to provide a social geography of one of the less privileged communities in South Africa. The township of Merebank, about 15 km west of Durban was chosen as the study area.In order to assess ... -
Estimation of hydrological properties of South African soils.
(1983)A computer simulation model of the soil water regime can be a useful research, planning and management tool, providing that the data required by the model are available. Finite difference solutions of the general flow ... -
The lithostratigraphy and petrogenesis of the Nsuze group northwest of Nkandla, Natal.
(1984)The volcanic and sedimentary Nsuze Group constitutes the lower part of the -
Optimization, validation and application of radioimmunoassays for plant growth substances in avocado (Persea americana Mill.) fruits.
(1984)The objective was to develop, optimize and validate radioimmunoassays (RIA) for several plant growth substances (PGS) and then apply the RIA's to determine PGS trends in 'Fuerte' avocado fruits from fruit set to fruit ... -
An economic study of the technology of harvesting and transport systems used in clearfelling Acacia mearnsii, Eucalyptus grandis and Pinus patula.
(1984)Objectives of this thesis are to project the description and supply of Black labour in the forestry industry of southern Africa, survey harvesting and transport systems used overseas and locally, select and adapt a ... -
Some aspects of water relations on avocado Persea americana (Mill.) tree and fruit physiology.
(1985)The effect of long-term irrigation on water relations of 'Fuerte' avocado trees, and the consequences for fruit ripening and physiology, particularly physiological disorders, were studied. Four irrigation regimes were ... -
The economic feasibility of producing ethanol from sugar-cane in South Africa.
(1985)The study is an evaluation of the economic feasibility of producing ethanol from sugar-cane in South Africa. With the depressed state of the sugar market and recent substantial increase (40% in January 1985) of liquid ... -
Rents and urban political geography, the case of Lamontville.
(1986)This research project explores the relevance of the available urban political geographic literature to understanding mobilization that occurred in opposition to rent increases,and the proposed alteration of a national ... -
Investigation of 2:1 layer silicate clays in selected southern African soils.
(1986)As very little detailed X-ray diffraction investigations have been carried out in South Africa on 2:1 phyllosi1icates in soils, the aim of the present study was to contribute to the knowledge of soil genesis, as well as ... -
The petrology and geochemistry of intrusions at selected nunataks in the Ahlmannryggen and Giaeverryggen, western Dronning Maud Land, Antarctica.
(1986)The mid-Proterozoic Borgmassivet intrusions of western Dronning Maud Land intrude Archaean granites and a volcano-sedimentary sequence, the Ritscherflya Supergroup. They are SiO2-rich ultramafic to mafic tholeiitic rocks ... -
Studies on Puccinia recondita f. sp. tritici with special emphasis on adult plant resistance in wheat.
(1986)Leaf rust (Puccinia recondita f.sp. tritici) of wheat (Triticum aestivum) was widespread in South Africa during 1983, 1984 and 1985 and often reached epidemic levels, especially on autumn-sown spring wheat in the Cape ... -
Studies on the pathogenicity of Puccinia graminis f. sp. Tritici and the nature of host resistance in wheat.
(1986)This study was undertaken to investigate the pathogenic variation of Puccinia graminis f.sp. tritici in South Africa and to determine the nature of host resistance to this fungus. Seventeen pathotypes of wheat stem ... -
Gender, geography and urban form : a case study of Durban.
(1987)This research project is primarily a theoretical work which critiques androcentric knowledge in general and androcentricism in South African human geography in particular . It therefore has relevance both for local ...