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Rice production is a major source of global methane emissions and many studies have been conducted to quantify flux rates of methane alongside N2O emissions from rice fields. The closed chamber method with manual sampling is the conventional approach for determining greenhouse gas (GHG) emission ...


Sander, Bjoern OleWassmann, Reiner[Common practices for manual greenhouse gas sampling in rice production: a literature study on sampling modalities of the closed chamber method]Common practices for manual greenhouse gas sampling in rice production: a literature study on sampling modalities of the closed chamber method

70% of the world’s freshwater is used for irrigated agriculture and demand is expected to increase to meet future food security requirements. In Asia, rice accounts for the largest proportion of irrigated water use and reducing or conserving water in rice systems has been a long standing goal in ...


Nelson, AndrewWassmann, ReinerSander, Bjoern OlePalao, Leo Kris[Climate-Determined Suitability of the Water Saving Technology "Alternate Wetting and Drying" in Rice Systems: A Scalable Methodology demonstrated for a Province in the Philippines]Climate-Determined Suitability of the Water Saving Technology "Alternate Wetting and Drying" in Rice Systems: A Scalable Methodology demonstrated for a Province in the Philippines

Rapid, precise, and globally comparable methods for monitoring greenhouse gas (GHG) fluxes are required for accurate GHG inventories from different cropping systems and management practices. Manual gas sampling followed by gas chromatography (GC) is widely used for measuring GHG fluxes in agricul...


Tirol-Padre, AgnesRai, MGathala MSharma SKumar, V.Sharma PCSharma DKWassmann, ReinerLadha, Jagdish Kumar[Assessing the performance of the photo-acoustic infrared gas monitor for measuring CO2, N2O, and CH4 fluxes in two major cereal rotations]Assessing the performance of the photo-acoustic infrared gas monitor for measuring CO2, N2O, and CH4 fluxes in two major cereal rotations

As Asia's population continues to grow both in terms of economy and population, food security continues to be an issue of major concern for policy makers. During times of crisis, from topical storms and tsunamis to their ensuing floods, food security is of particular concern, to feed the local po...


Ismail, A.B.Mckill DWassmann, ReinerBouman, B.["Scuba Rice": ensuring food security during a flood]"Scuba Rice": ensuring food security during a flood

Two pot experiments in a “walk-in” growth chamber with controlled day and night temperatures were conducted to investigate the influence of elevated temperatures along with rice straw incorporation on methane (CH4) and nitrous oxide (N2O) emissions as well as rice yield. Elevated temperature incr...


Gaihre, Yam KantaWassmann, ReinerVillegas-Pangga, Gina[Impact of elevated temperatures on greenhouse gas emissions in rice systems: interaction with straw incorporation studies in a growth chamber experiment]Impact of elevated temperatures on greenhouse gas emissions in rice systems: interaction with straw incorporation studies in a growth chamber experiment

The ‘alternate wetting and drying’ (AWD) technology for rice is a water-saving technology with a high greenhouse gas (GHG) mitigation potential. The Philippine government attempts to disseminate AWD in all national irrigation systems in order to adapt to increasingly scarce water resources. This...


Sander, Bjoern OleWassmann, ReinerPalao, Leo KrisNelson, Andrew[Climate-based suitability assessment for alternate wetting and drying water management in the Philippines: a novel approach for mapping methane mitigation potential in rice production]Climate-based suitability assessment for alternate wetting and drying water management in the Philippines: a novel approach for mapping methane mitigation potential in rice production

Rice, with its wide geographic distribution extending from 50°N to 35°S, is expected to be the most vulnerable cultivated crop to future changing climates. Among the different abiotic stresses, extreme temperatures coinciding with critical developmental stages, increasingly frequent floods and dr...


Jagadish, Krishna S.V.Septiningsih EMKohli AThomson MJYe CRedoña EKumar, ArvindGregorio, G.B.Wassmann, ReinerIsmail, A.M.Singh, RK[Genetic advances in adapting rice to a rapidly changing climate]Genetic advances in adapting rice to a rapidly changing climate

Seasonal rainfall in the Philippines is known to be modulated by ENSO phenomenon, with El Niño frequently contributing to reduced rainfall and drought while La Niña resulting in excessive rainfalls, floods and more intense typhoons. The alterations in rainfall patterns can have considerable feedb...


Alberto, Ma. Carmelita R.Wassmann, ReinerHirano, TakashiMiyata, AkiraKumar, ArvindTirol-Padre, AgnesAmante, Modesto[Influence of climate variability on seasonal and interannual variations of ecosystem CO2 exchange in flooded and non-flooded rice fields in the Philippines]Influence of climate variability on seasonal and interannual variations of ecosystem CO2 exchange in flooded and non-flooded rice fields in the Philippines

The new GHG calculator named SECTOR (Source-selective and Emission-adjusted GHG CalculaTOR for Cropland) is based on the IPCC Tier 2 approach for rice as well as other crops. The new features of SECTOR facilitate high flexibility in terms of entering newly obtained emission factors, easy data tra...


Wassmann, ReinerPasco RZerrudo JNgo DMVo TBTSander, Bjoern Ole[Introducing a new tool for greenhouse gas calculation tailored for cropland: rationale, operational framework and potential application]Introducing a new tool for greenhouse gas calculation tailored for cropland: rationale, operational framework and potential application

Wassmann, ReinerSander, Bjoern OleYadav, SudhirBouman, BasSingleton, GrantStuart, AlexanderHellin, JonathanJohnson, DavidHughes, Jacqueline d'ArrosButterbach-Bahl, KlausKiese, RalfKraus, DavidJanz, BaldurLinquist, BruceGaihre, Yam KantaChirinda, NgonidzasheWollenberg, Eva K.[New records of very high nitrous oxide fluxes from rice cannot be generalized for water management and climate impacts]New records of very high nitrous oxide fluxes from rice cannot be generalized for water management and climate impacts

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