Nutrient Management of agricultural land Nutrient budgeting of agro-ecosystem Useful resources recovery and utilization from livestock wastewater such as N, P (struvite), Cu, and Zn Reactor design, process optimization and process performance prediction model Automatic treatment system of livestock wastewater using ICT Cross cutting issues (Climate change, Fine dust pollution, Climate resilient livestock wastewater treatment system) in nutrient management and pollutant reduction in agricultural environment