Fig. 5. Observed fractions of P forms in drain water sampled below Plot 1 (left) and Plot 2 (right) at the irrigation events BG (April 2001), SL1+ (May 2001), H+ (Nov. 2001), and PL– (March 2002). Patterned fractions are particulate P and fractions of uniform color are dissolved P. Green is organic P, and light blue is inorganic P.