Abstract
Resources consumption and environmental loading (eco-efficiency) of both High input type and Recycling type agriculture scenarios were preliminary examined, using Life Cycle Assessment (LCA) technique. The data collection and examination of life cycle energy and CO2 emission at each stage, from the fertilizer production up to its use, were carried out to obtain the consumption and emission per unit nitrogen input for crop production.
Based on the results of the case study, it was found that the CO2 emission rate of the Recycling type is 3, 373-4, 183kg·y-1/ha lower than that of the High input type. On the other hand, quite different life cycle energy consumption levels for the Recycling type are found depending on the composting treatment methods employed. The life cycle energy varied from around 1.3GJ·y-1/ha to around 12.8GJ·y-1/ha, while the life cycle energy of the High input type which was estimated at around 2.7GJ·y-1/ha. Thus, the study results suggest that careful examination should be conducted before the introduction of the Recycling type agriculture to increase the eon-efficiency as a objectives for the regional planning.
