BAUTISTA Elmer G.

SAITO Masanori

English

紀要類 (bulletin)Poster Presentationdepartmental bulletin pape

BAUTISTA, Elmer G.

SAITO, Masanori

Tohoku University Repository (TOUR) / 東北大学機関リポジトリ

Greenhouse Gas Emission of Rice ProductionSystem in the Philippines Based on Life CycleInventory Analysis著者 BAUTISTA  Elmer G., SAITO  Masanorijournal orpublication titleJournal of Integrated Field Sciencevolume 12page range 81-81year 2015-03URL http://hdl.handle.net/10097/6052181Greenhouse Gas Emission of Rice Production System in the Philippines Based on Life Cycle Inventory AnalysisElmer G. BAUTISTA1 and Masanori SAITO21Philippine Rice Research Institute2Field Science Center, Graduate School of Agricultural Science, Tohoku UniversityIn the present study, we estimated Greenhouse Gas (GHG) emission from rice production system in the Philip-pines from seedbed preparation to harvesting and threshing based on national statistics 2006-2007. Since rice production area in the country is mostly dichotomized as irrigated or rainfed area cultivated twice a year, we used different emission factors of soil processes for each area. We included emissions from farming activities such as fertilizer, agricultural machine, and fuel as well as those from water buffalo (carabao) as draft animal widely used among Philippine rice farmers. Results showed that the total GHG emission of rice production in the Philip-pines was 13.3 Tg CO2 eq. yr-1, comprised of 3,920 kg CO2 eq. ha-1crop-1 in irrigated area and 1,381 kg CO2 eq. ha-1crop-1 in rainfed area. These corresponded to 0.93 kg CO2 eq. kg grain-1and 0.47 kg CO2 eq. kg grain-1, respec-tively. A large proportion of the emission was derived from soil processes such as CH4 and N2O emissions from soil. Emission from carabao was 50 kg CO2 eq. ha-1 irrespective of water management. Emissions from fuel and other farming activities were 140 kg CO2 eq. ha-1crop-1 in irrigated area and 111 kg CO2 eq. ha-1crop-1 in rain-fed area.Poster Presentation

Greenhouse Gas Emission of Rice Production System in the Philippines Based on Life Cycle Inventory Analysis

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Greenhouse Gas Emission of Rice Production System in the Philippines Based on Life Cycle Inventory Analysis

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