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• levels are moderate to excellent in the upper soil horizon at each site. No vegetation <br />response would be anticipated until phosphorus levels dropped to the law category (Berg, <br />1980). <br />Soil thickness among the seven Wadge profiles ranged from 14 to 40 inches with a mean of 24 <br />inches. Soil textures were predominantly loam and silt loam while spoil textures typically <br />were gravelly loam. The rock fragment content of the spoil typically ranged from 35 to 60 <br />percent by volume with a mean of about 45 percent. Rooting depths ranged from 38 to 84 <br />inches with a mean of 57 inches. The available water-holding capacity ranged from 5.2 <br />inches to 8.5 inches with a mean of 6.5 inches per soil profile. <br /> The Wolf Creek soil has a slightly acid reaction, very low salinity and extremely low SAR. <br /> Calcium i s the dominant cation in the soil. The Wolf Creek spoil has an extremely acid <br /> reaction, low salinity and very low SAR. Calcium is the dominant cation in the spoil. The <br /> Wolf Cree k subsoil has a medium acid to neutral reaction, very low to low salinity, and <br /> very low to low SAR. Calcium is the dominant cation in the subsoil. The mean acid base <br /> potential was 0 for spoil and 15 tons ca Lcium carbonate per acre fur row slice for the <br /> subsoil. The Wolf Lreek soil has a high to excellent fertility status for soil reaction <br /> <br />texture <br />or <br />anic matter <br />and <br />ho <br />h <br />r <br />Nit <br />t <br />d <br />i <br />l <br />l , <br />l <br /> , g <br />, <br />p <br />sp <br />o <br />us. <br />ra <br />e an <br />ammon <br />um <br />eve <br />s a re <br />ow to moderate <br /> at these sites. However, a nitrogen fertilizer application is not r ecommended because <br /> organic matter levels are high. <br />Soil thickness at the two Wolf Lreek profiles was 17 and 30 inches with a mean of 24 <br />inches. The soil texture was silt loam, spoil texture was gravelly loam, and subsoil <br />textures were gravelly silty clay loam, gravelly clay loam, and silty clay loam. The rock <br />fragment content of the spoil was 35 percent by volume. The rock fragment content of the <br />subsoil ranged from 0 to 30 percent by volume with a mean of TS percent. Rooting depth was <br />54 and 72 inches with a mean of 63 inches. The available water holding capacity was 7.6 <br />and 10.9 inches with a mean of 9.3 inches per soil profile. <br />Few productivity limiting factors were identified in the Wadge or Wolf Creek 1987 and 1988 <br />reclamation areas. The soil, subsoil and spoil mediums had fair to good suitability <br />ratings for fertility, reaction (pH), salinity (EC), sodicity (SAR), cation dominance, <br />available water-h of ding capacity, texture, and acid base potential. Potential productivity <br />• may be reduced slightly but not significantly by soil and/or spoil compaction, high rack <br />fragment content in spoil, and an unsuitable acid base potential. <br />4 <br />