The overall goal of this study will be to identify potential options for agricultural management surrounding Pulicat Lagoon to reduce greenhouse gas emission, nutrient loads and lessen future bloom events in the Lagoon. Considering the existing land use practices, multiple watershed models will be applied to examine the ability of a series of land management scenarios, developed in consultation with agricultural and environmental stakeholders, to reach the proposed targets. Additionally, existing agricultural practices (selective classes), soil mineralization and net N loss around the Lagoon will be assessed for prioritizing Crop Management to increase Nitrogen Use Efficiency (NUE) and restrict Cultural Eutrophication in Pulicat Lagoon. The study has been conceptualized in following objectives: