Thesis--Universidade de São Paulo. / Includes bibliographical references (p. 205-214).

Typescript (photocopy). / Digitized by Kansas Correctional Industries

Thesis (M.A.)--Memorial University of Newfoundland, 1994. / Typescript. Restricted until May 1995. Bibliography: leaves 211-228. Also available online.

Thesis (M.Sc.)--University of the Witwatersrand, Faculty of Science, 2013. / Unable to load abstract.

This dissertation examines nursery/garden centre compliance with Invasive Alien Plant (IAPs) legislation in eThekwini and uMsunduzi, South Africa. Despite South African governmental programmes, an apparent lack of public awareness regarding IAPs persists. The cost to clear IAPs in South Africa is estimated to be 12 billion Rand over 20 years. Nurseries/garden centres should be able to increase customer awareness of IAPs. However, Government regulation/instruction of nurseries/garden centres seems inadequate. A mixed methods approach involving quantitative and qualitative analyses of questionnaires, observations and interviews was used in this study. There was little evidence that nurseries/garden centres stocked/sold CARA plants. However, they were stocking/selling NEMBA plants in spite of knowing CARA, NEMBA and indigenous alternatives. There is little interaction with relevant government/industry programmes. It is recommended that the Department of Environmental Affairs institute a IAPs Advisory Committee to see to the dissemination and provision of relevant information and training concerning IAPs to the industry.

<p>Cape Town includes two vegetable farming areas within the city limits, the Joostenbergvlakte/Kraaifontein area and the Philippi area. Both areas supply produce to local markets and further afield. Sporadically, high levels of cadmium, copper, lead and zinc have been found to occur in some of the soils, irrigation water resources and crops. To find the sources of specifically Cd, Pb and Zn to these agricultural systems, extensive analysis of several heavy metals in inputs such as fertilizers, agrochemicals and supplementary water resources to these farming areas was undertaken. Heavy metal concentrations in soils, irrigation water resources and crops were also determined. Two mitigation techniques that could be used to remediate Cd, Pb and Zn contamination were investigated. The first mitigation method included immobilization of heavy metals as phosphate complexes by using a triple super phosphate fertilizer, while the second method involved mobilisation and thus leaching of heavy metals away from plant roots using EDTA. These mitigation methods were tested in a pot experiment using cabbage as the experimental crop and soil from these areas as growth medium. A survey of common farming practices in these two areas and farmers willingness to use remediation methods was conducted.</p>

<p>Cape Town includes two vegetable farming areas within the city limits, the Joostenbergvlakte/Kraaifontein area and the Philippi area. Both areas supply produce to local markets and further afield. Sporadically, high levels of cadmium, copper, lead and zinc have been found to occur in some of the soils, irrigation water resources and crops. To find the sources of specifically Cd, Pb and Zn to these agricultural systems, extensive analysis of several heavy metals in inputs such as fertilizers, agrochemicals and supplementary water resources to these farming areas was undertaken. Heavy metal concentrations in soils, irrigation water resources and crops were also determined. Two mitigation techniques that could be used to remediate Cd, Pb and Zn contamination were investigated. The first mitigation method included immobilization of heavy metals as phosphate complexes by using a triple super phosphate fertilizer, while the second method involved mobilisation and thus leaching of heavy metals away from plant roots using EDTA. These mitigation methods were tested in a pot experiment using cabbage as the experimental crop and soil from these areas as growth medium. A survey of common farming practices in these two areas and farmers willingness to use remediation methods was conducted.</p>

The System of National Accounts inadequately reflects levels of, or changes in, the natural resource base. Natural Resource Accounts are designed to redress this shortcoming. A wealth account for Quebec agricultural land was constructed, taking an inventory of land with capability for agriculture and monetizing the stocks. The changes to the wealth account over a 15 year period represented a loss to the resource base of $260 million and an average annual charge against net farm income of $17.3 million. Prices for the valuation exercise were determined with the use of a Hedonic Pricing Model. The estimated implicit prices for the classes of the Canada Land Inventory revealed premiums for differences in productivity between the classes. Regional variables that accounted for many non-agricultural effects were also highly significant.

This dissertation examines nursery/garden centre compliance with Invasive Alien Plant (IAPs) legislation in eThekwini and uMsunduzi, South Africa. Despite South African governmental programmes, an apparent lack of public awareness regarding IAPs persists. The cost to clear IAPs in South Africa is estimated to be 12 billion Rand over 20 years. Nurseries/garden centres should be able to increase customer awareness of IAPs. However, Government regulation/instruction of nurseries/garden centres seems inadequate. A mixed methods approach involving quantitative and qualitative analyses of questionnaires, observations and interviews was used in this study. There was little evidence that nurseries/garden centres stocked/sold CARA plants. However, they were stocking/selling NEMBA plants in spite of knowing CARA, NEMBA and indigenous alternatives. There is little interaction with relevant government/industry programmes. It is recommended that the Department of Environmental Affairs institute a IAPs Advisory Committee to see to the dissemination and provision of relevant information and training concerning IAPs to the industry.

Les dynamiques socio-économiques déterminent les rapports de genre et l’accès aux ressources productives. L’essor des cultures vivrières et maraîchères a forgé un nouveau contexte agricole que nous voulons examiner dans ce travail. Il s’est produit une transformation de l’identité des acteurs impliqués, de l’usage de l’espace, des relations de genre et du rapport aux ressources. Cette recherche voudrait identifier les principales dynamiques qui ont accompagné cette transition agricole, montrer que la reconversion agraire ne s’est pas produite de la même manière pour les femmes et les hommes et débusquer les spécificités de leurs nouvelles activités économiques. Le développement des activités féminines et l’évolution des asymétries de genre, l’égalité de statuts et des droits entre les sexes n’aboutissent pas à l’égalité des pouvoirs entre les femmes et les hommes et à un accès équitable aux ressources productives puisque plusieurs facettes de la socioculture Bamoun (spécialisation des cultures, division du travail etc.) entretiennent une hiérarchisation en faveur des hommes et renforcent la supériorité de leurs statuts, de leurs fonctions et de leurs activités. / The socio-economic dynamics determine gender relations and the allocation of productive resources. In this area, the development of foodstuff and vegetable cultivation has forged a new agricultural context that we want to study in this work. There was a transformation of actors involved, of the spatial changes, of gender relations and the access to resources. This research is to identify the significant dynamics that accompanied this agricultural transition, to show that agricultural reconversion does not occur in the same way for women and men and to review the specificities of their new economic activities. The development of gender asymmetries, of the women activities, equal status and rights between the sexes do not lead to equality of power between men and women and equitable access to productive resources since many aspects of Bamun culture (crop specialization, division of labor) maintains a hierarchy in favor of men and reinforce the superiority of their status, their functions and activities.