General whole plant and nutritional physiology; Specializing in water and nutrient management planning for nursery and greenhouse systems; plant and system nutrient use efficiency; reducing nitrogen and phosphorus losses to the environment; runoff and containment engineering; general nursery and greenhouse management; monitoring and control systems (e.g. environmental control systems, time domain reflectometry etc.); controlled environment chambers; hydroponic systems; web-based distance learning courses and environments (WebCT); web-based technology.