Kosana Suvočarev, Department of Biological and Agricultural Engineering (Landscape Flux Group), Universidad de Arkansas (Fayetteville)
Rice (Oryza sativa), the most important staple crop on earth is shown to be one of the biggest water consumers with the highest GHG emissions in cultivated agriculture. Following flooding of soils for the rice production bacteria decompose the organic carbon that was stored in plants and soils, converting it to CO2 and methane (CH4), which are released to the atmosphere as the GHG emissions. The main goal of our research is to test the hypothesis that alternate wetting and drying (AWD - flooding the soil and then allowing to dry down before being reflooded) water management practices will maintain the grain yield while reducing water use and GHG emissions. In addition we are testing the alternative micrometeorological methods to Eddy covariance application.