5. Conclusions
This study has tried to estimate the CFP from sugar produced from sugarcane in eastern Thailand. The data used were taken from surveys, interviews, questionnaires and statistics, covering the majority of sugarcane farmers and cultivation area in the region. Using the cultivation practice data 2007 cropping years and the averaged data during 2003–2007 from sugar mills, the estimated CFP was 0.55 kg CO2e kg−1 sugar. More than 88% of greenhouse emissions came from the sugarcane cultivation. This includes N fertilizer application and fossil fuel uses. Contributions from herbicide and insecticide uses were negligible. We found that the data input for CFP calculation varied widely depending on the cultivation practice of farmers and this could significantly affect the value of the CFP. Of this, the rate of N fertilizer application differed for a factor of 18. More survey data may be needed to study sensitivity of CFP to such large variations of input data. For the sugar mill, relatively low emission was due to use of bagasse to substitute fossil fuel.