Measurement of Soil Surface and Plant Canopy Ammonia Fluxes in Red Pepper Field Using Dynamic Chamber Method

Ammonia (NH3) gas is the agent of the secondary particulate matter (PM2.5) generated from crop fields amended with organic and inorganic fertilizer application. The purpose of this study is to provide a more reasonable method of calculating NH3 emissions by comparing amounts of NH3 gas emitted in the soil surface and plant canopy in red pepper cultivated field. And we used two types of dynamic chamber such as soil surface chamber and plant canopy chamber, for comparing seasonal NH3 emissions. Ammonia estimated by soil surface and plant canopy chamber methods were 36.4% and 24.1% of total nitrogen applied to field, respectively. The lower NH3 emission in plant canopy chamber method than that in soil surface chamber method should be attributed to absorption of NH4 + and/or NH3 by plants. Though soil surface chamber method is widely used, it is necessary to develop method for more accurate estimation of NH3 emission from crop fields. KCI Citation Count: 3