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Fig. 2. Estimated juglone pore water concentrations (Cpw) in equilibrium with total extractable juglone (Cs*) from Ryker A horizon soils beneath a black walnut agroforestry system at two locations within the cropping alley (1.2 and 4.2 m from the tree row). The solid line is the prediction from Eq. [1] in which the reversible sorption coefficient was estimated using for average % organic carbon values of the two alley positions. Symbols are predicted Cpw values for specifically measured soil concentrations from the field for reference.
