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Fig. 3. Examples of (a) the method used to match predicted P moved from Active to Labile P to measured sequentially extracted Fe-oxide strip P and (b) the decline in calculated P desorption rate factors for one soil of Sharpley (1996). (c) Relationship between soil PSC values and calculated base values in exponential equations describing decreases in P desorption rate factors with time for data of Indiati (1998), Indiati and Sharpley (1996), Maguire et al. (2000), McDowell and Sharpley (2002), Sharpley (1996), and Siddique and Robinson (2004).
