Agricultural Engineering: Agricultural Economics, Soil and Water Engineering, Agricultural Ecology, Design to Eliminate Waste, Regeneration of Natural Systems, Land Resource Management, Soil and Water Engineering Pollution control technology: Water pollution, water relations, water quality classification, process modeling, rainwater management, water quality occurrence, groundwater management, water quality and protection, drinking water safety, industrial wastewater treatment, wastewater and sludge treatment, integrated water resources management, watershed assessment and monitoring, sludge treatment and reuse, on-site and small-scale systems [Research areas include but are not limited to the above topics]