Fig. 2. Relationship between (A) percent reduction in 0.01 M calcium chloride–extractable phosphorus (CaCl2–P) and drinking water treatment residual (WTR) Langmuir phosphorus adsorption maxima (Pmax) normalized across WTR application (Pmax x WTR application) for incorporation of WTR at 25, 50, and 100 g kg–1 and (B) percent reduction in Mehlich 3–extractable P and Pmax normalized across WTR application (Pmax x WTR application) for incorporation of WTR at 25, 50, and 100 g kg–1.