Abstract
AbstractSoils identified as belonging to the Alligator and Sharkey series are of wide distribution and importance on portions of the Lower Ohio River Valley Flood Plain. Previous morphological and chemical studies indicated a close similarity of these soils. Further studies of physical properties, including particle size distribution, aggregate stability, bulk density, plastic limits, pore space, available moisture, percolation rates, along with sand, silt, and clay mineralogy, indicate that in most characteristics there are greater ranges between profiles within a series than between series. These data strongly support the hypothesis that these soils should be included in the same classification and mapping category in the Lower Ohio River Valley; namely, Vertic Haplaquepts: fine montmorillonitic, nonacid, mesic. The suggested classification is in the Karnak series.
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