Energy balance, energy benefit-cost analysis and global warming potential of rice production systems : a case study in Ayeyarwaddy Region, Myanmar | |
| Author | May Nwe Soe |
| Call Number | AIT Thesis no.AE-13-04 |
| Subject(s) | Rice--Climatic factors--Myanmar--Ayeyarwaddy Region Rice--Energy consumption--Myanmar--Ayeyarwaddy Region Global warming |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Agricultural Systems and Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AE-13-04 |
| Abstract | Energy efficiency and global warming potential of rice production systems are directly linked to each other (Schneider, 2008). Depending on the level of energy efficiency, amount of greenhouse gases emissions are changing. The study investigated the status of energy balance, energy benefit-cost and greenhouse gases emission in irrigated and rainfed rice production systems and in different farm classes under these rice production systems in Ayeyarwaddy Region. Farm classes were identified as small farm (0.81 ha - 2.5 ha) and large farm (2.5 ha - 24.29 ha). Data were analyzed by using ANOVA F-test with LSD mean comparison for a comparative analysis. Then, the interrelationship among energy used, energy efficiency ratio, energy cost and greenhouse gases emission in both rice production systems were observed by applying multiple regression analysis. The results showed that rain-fed rice production system was higher energy efficiency (5.9) than those of irrigated rice production system (5.6) although there were not statistically significant different between rice production systems. Regarding to farm class differences, energy efficiency ratio for different farm classes under both rice production systems were also not statistically significant different to each other. The energy benefit cost ratio was higher in rain-fed rice (1.4) than in irrigated rice (0.9). Then, global warming potential was higher in irrigated rice that produced 10.95 kg CO2eq for the production of 10 kg unprocessed rice while rain-fed rice contributed 7.92 kg CO2eq. It was confirmed by the ANOVA results that there is statistically significant different between rice production systems at 1% probability level. The global warming potential between different farm classes were also statistically significant different at 1% probability level and then, small farm sizes contributed more potent than large farm sizes in both rice production systems. The relationship between energy input, energy cost and global warming potential in rainfed rice system was highly relationship because R2 value was 0.807 while R2 in irrigated rice system was 0.392 and therefore, it was interpreted that there was no relationship between them in irrigated rice production system. Then, the relationship of energy efficiency ratio, energy cost and global warming potential was also highly relationship because R2 value of rain-fed rice was 0.765 while R2 value in irrigated rice was 0.392 and so, it was concluded that there was no relationship in irrigated rice production system. |
| Year | 2013 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AE-13-04 |
| 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 | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Soni, Peeyush |
| Examination Committee(s) | Shivakoti, Ganesh P.;Perret, Sylvain R.;Dhakal, Shobhakar |
| Scholarship Donor(s) | Ministry of Foreign Affairs (Norway) |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2013 |