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Table 6. Average chemical characteristics of soils and herbaceous vegetation from six locations near <br />the Henderson mill in 1916, 1979, and 1985. <br /> <br />Variable <br />(units) <br /> <br />1976 Soils <br />(N 24) <br />1979 <br /> <br />1985 <br /> <br />1976 Veg9etation <br />(N = l8) <br />1979 <br /> <br />1985 <br />pli 5.30b1 5.60a 5.40b <br />EC(nrnhos/cm) 0.65b 1.12a 0.36c <br />SAT 41.90a 46.40a 41.20a <br />O.M. (Y) 7.DDd 5.3Ub 3.70c <br />N03-N (u9/9) 1.20b 2.96a <1.00 <br />P (u9l9) 31.70a 31.70a 27.60a <br />K (ugl9) 319.OOa 187.000 269.OOb <br />Ca (u9/9) 4.32b 9.35a 2.15c <br />Mg (u9/9) 1.64b 3.64a 0.78c <br />Na (ug/9) 0.22c 0.82a 0.50b <br />S.A.R. 0.12b 0.36a 0.49a <br />Zn (ugl9) 2.86a 3.33a 2.84a <br />Fe (u9/g) 222.OOb 249.OOa 152.OOc <br />Mn (ug/g) 89.70b 119.10a 31.20c <br />1 <br />Cu (ug/9) 0.82b 1.39a 0.81b 2.56b 6.69a 6•l4a <br />Mo (ug/g) <0.01 1.62a 0.05b l.lib 4.89a 4.61a <br />Cd (u9/g) <0.20 0.30a O.lOa <br />Pb (ug/g) 4.02a 4.29a 3.04b <br />As (ug/g) 2.15a <0.01 O.OIb <br /> <br />CN (u9/9) <1.00 <1.00 ---- <1.00 1.74 ---- <br />F (ug/g) 0.09b 1.04a 0.08b 4.89a 4.37a 2.48b <br />N <br />Qy <br />lMPdnS in a my fCr Lithe; S3iii Ji' vcyeid[iOn foiiowed by a similar letter are not significantly different <br />(p<0.05). A 7ukey's test was used to determine significant differences for each measured variable. Data <br />at detection limits of instruments were not statistically analyzed. <br />