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Fig. 6. Lability of fertilizer P (%) in soil sections collected at different distances from the point of fertilizer application. The lability of fertilizer P was calculated by subtracting the soil E value of the untreated soil from the total E value of each section and dividing this number by the concentration of fertilizer P in the respective section (calculated as reported in the legend of Fig. 1). Numbers on the top of each bar represent the corresponding total fertilizer P concentration in milligrams per kilogram (mg kg1). Error bars represent standard errors of five replicates. LSD for fertilizer treatment x soil section was 13.5.