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Scope effects in contingent valuation : an application to the valuation of irrigation water quality improvements in Infulene Valley Mozambique
Dissertation (MSc (Agric))--University of Pretoria, 2018.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2018
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| _version_ | 1867613665400717312 |
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| access_status_str | Open Access |
| author2 | Mungatana, Eric D. |
| author_browse | Mungatana, Eric D. |
| author_facet | Mungatana, Eric D. |
| collection | Thesis |
| dc_rights_str_mv | © 2018 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Agric))--University of Pretoria, 2018. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/65910 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:45.647Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/65910 Scope effects in contingent valuation : an application to the valuation of irrigation water quality improvements in Infulene Valley Mozambique Mungatana, Eric D. gracamanjate2012@yahoo.com.br Manjate, Graca UCTD Dissertation (MSc (Agric))--University of Pretoria, 2018. This study uses the double-bounded bid elicitation format to test whether the willingness to pay (WTP) of 244 randomly selected residents of Maputo and Matola cities for wastewater quality improvements in the Infulene Valley is sensitive to internal and external scope. The Infulene Valley was selected because its wastewater is used as an input in vegetable irrigation. WTP was elicited and compared when the level of wastewater treatment was 100 % and when it was 50 %. The results show that the majority of those interviewed display high levels of knowledge regarding the risks associated with poor quality irrigation water, and that they have attitudes and perceptions receptive to a policy that aims to improve irrigation water quality. The WTP responses passed the bottom up (t= 15.28, p=0.000) and top down (t=14.07, p=0.000) internal and external (t=13.43, p=0.000) scope tests, suggesting that the level of wastewater treatment significantly influences households’ WTP. The following variables were statistically significant in the WTP model: income, age, education level, household size, gender, whether the household considers water scarcity as a priority issue, knowledge of the unsuitability of Infulene Valley water for vegetable irrigation, and whether the household is aware that the Infulene Valley is an important supplier of fresh vegetables to Maputo and Matola residents. The study concluded that the level of water treatment (high quality of treated wastewater) is a significant factor of preference over the alternative policy in wastewater treatment. The following recommendations derive from the study: policy makers should consider wastewater treatment planning and they should develop an irrigation water pricing system, as well as conservation practices to manage pollution problems at Infulene Valley. While this study provides an estimate of household values for irrigation water quality improvements in the Infulene Valley, is ultimately up to policy makers at the city and country levels to implement any changes. Agricultural Economics, Extension and Rural Development MSc (Agric) Unrestricted 2018-07-25T09:00:53Z 2018-07-25T09:00:53Z 2018/04/19 2018 Dissertation Manjate, G 2018, Scope effects in contingent valuation : an application to the valuation of irrigation water quality improvements in Infulene Valley Mozambique, MSc (Agric) Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/65910> A2018 http://hdl.handle.net/2263/65910 en © 2018 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Scope effects in contingent valuation : an application to the valuation of irrigation water quality improvements in Infulene Valley Mozambique |
| title | Scope effects in contingent valuation : an application to the valuation of irrigation water quality improvements in Infulene Valley Mozambique |
| title_full | Scope effects in contingent valuation : an application to the valuation of irrigation water quality improvements in Infulene Valley Mozambique |
| title_fullStr | Scope effects in contingent valuation : an application to the valuation of irrigation water quality improvements in Infulene Valley Mozambique |
| title_full_unstemmed | Scope effects in contingent valuation : an application to the valuation of irrigation water quality improvements in Infulene Valley Mozambique |
| title_short | Scope effects in contingent valuation : an application to the valuation of irrigation water quality improvements in Infulene Valley Mozambique |
| title_sort | scope effects in contingent valuation an application to the valuation of irrigation water quality improvements in infulene valley mozambique |
| topic | UCTD |
| url | http://hdl.handle.net/2263/65910 |