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ARS Home » Southeast Area » Jonesboro, Arkansas » Delta Water Management Research » Research » Research Project #434189

Research Project: Quantify Changes in Water Quality and Greenhouse Gas Emissions Due to Innovative Rice Production Practices

Location: Delta Water Management Research

Project Number: 6024-13000-004-014-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Jun 1, 2018
End Date: May 31, 2023

Measure, model, and/or estimate the impact of current and innovative farming practices on water quantity and quality while sustaining crop yields and reducing environmental impacts, namely greenhouse gas emissions and runoff water quality, in irrigated agroecosystems. Quantify changes in irrigation water use, water quality, and greenhouse gas emissions as a result of implementing innovative rice production practices.

Working at the field scale, we will use static vented chambers and eddy covariance systems to measure fluxes of interest: water, CO2, CH4, and sensible heat flux. Samples collected with static vented chambers will also include analysis of N2O and NH3. Additionally, water samples will be collected either manually or with automated samplers for laboratory analysis of nutrients and sediment. These measurements will take place in several fields cultivated in current rice cultivars under conventional and innovative irrigation practices. Innovative irrigation practices include but are not limited to alternate wetting and drying.