| Author | Yuniarti, Ivana |
| Call Number | AIT Thesis no.AQ-09-13 |
| Subject(s) | Water hyacinth--Evaluation--Thailand--Pak Phanang
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Aquaculture and Aquati c Resou rces Management, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AQ-09-13 |
| Abstract | A research to determine which control method for water hyacinth infestation in Pak Phanang River is more feasible to be operated was conducted on November 2008 to March 2009. The criteria chosen to assess the feasibility were economic efficiency and local people's participation. Participatory methods (semi-structured interview and calendar activities) were applied to see possible benefits obtained by the people water hyacinth control. The main survey done on November to December 2008 were targeted to 6 groups of fertilizer producers, 6 groups of floating garden farmers, more than 25 fishers, and 25 people from different livelihoods. (i.e. teachers, farmers, aqua culturists, etc.). Thereafter, the survey was followed by an experiment on floating garden conducted in January to March 2009 to check data from survey and to gather further information. The experiments result show that collected data from the survey was reliable. The survey results show that water hyacinth give impact to local people: 1) reduction of fisheries production, 2) reduction of water quality, 3) disruption of human health, and 4) income generation from fertilizer production. The impact to water quality and human health were found to be correlated with gender and income of respondents. Hard method, although less technically effective and less cost effective than manual removal, provides positive financial benefit if it was in the ideal case of utilization (B/C ratio after 20 years with discount rate 10% and 8% is 21:0 to 21:7). However, the actual case did not prove any financial benefit can be obtained by local people. Water hyacinth fertilizer production in the ideal case gives significant positive financial benefit (3,170 THB/group/month to 89,594 THB/group/month). The actual cases of this method also showed high financial benefit. Floating garden, on the other hand, provide lower financial benefit in the ideal case (3,023.7-20,994.9 THB/group/6 months or 504¬3,499.2THB/group/month), but it can generate further benefit such as provision of food for poor people. Hard method has relatively high support from the people as shown by average contribution of 518.7±644.0 THB/month. But in the current utilization of the machines, the respondents were not willing to give their support as they think that it may not be effective. Meanwhile, water hyacinth production received support from only 22% respondents and floating garden even received zero support from the respondents. Overall, in the ideal utilization, both hard method and water hyacinth production are the more recommended solutions. However, in the actual utilization, only water hyacinth fertilizer production is recommended for application. Soft method is supported by men respondents only, and by those with higher income and education. Therefore, socialization of the benefit which can be obtained from soft methods and giving subsidy for making floating garden (2.0-20.2 THB/person/day) can be used as alternative solution to improve local people's participation. |
| Year | 2009 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AQ-09-13 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Aquaculture and Aquatic Resources Management (AQ) |
| Chairperson(s) | Gallardo, Wenresti G. |
| Examination Committee(s) | Shivakoti, Ganesh P.;Ebbers, Theo;Nissapa, Ayut |
| Scholarship Donor(s) | Netherlands |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2009 |