Fig. 4. Effect of lime (pH) and P on amounts of P extracted with mixed anion–cation resin from three soils at three levels of applied P. Circle, zero P; triangle, low P rate; square, high P rate. The low and high P rates for each soil are given in the Materials and Methods section. Significance (probability level) of lime (L), added P (P), and L x P effects are shown for each soil

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