Fig. 1

Schematic illustration of general water flow among three reservoirs and one stream in a recycling irrigation system investigated in this study. VA10, a stream, did not receive runoff water from any production areas and supplied water to VA11 during early spring and summer months. VA11, a sedimentation reservoir, received runoff from all production areas of the nursery, and when it was full, water overflowed into VA12, a transition and irrigation reservoir. VA13, an irrigation reservoir, was replenished with water from VA12 through a culvert. The double circle indicates the point of sampling in each reservoir and stream