On the Cover

The cover image is a soil profile collage created by Colby J. Moorberg. The series name (if available), USDA Soil Taxonomy classification (United States Department of Agriculture Natural Resources Conservation Service, 2017), and source information for each image is below. Many of the images are available on SoilScience.info. You can view photos like these, and many others at www.flickr.com/photos/soilscience/.

Top row, left to right:

Coxville series; fine, kaolinitic, thermic Typic Paleaquults; courtesy of John Kelley

Colfax series; fine-loamy, mixed, subactive, thermic Aquic Fragiudults; courtesy of John Kelley

Dellwood series; sandy-skeletal, mixed, mesic Oxyaquic Humudepts; courtesy of John Kelley

Vaucluse series; fine-loamy, kaolinitic, thermic Fragic Kanhapludults; courtesy of John Kelley

Helena series; fine, mixed, semiactive, thermic Aquic Hapludults; courtesy of John Kelley

Leon series; sandy, siliceous, thermic Aeric Alaquods; courtesy of John Kelley

Unknown series; loamy, kaolinitic, thermic Grossarenic Kanhapludult; courtesy of Stan Buol

Second row, left to right:

Clifford series; fine, kaolinitic, mesic Typic Kanhapludults; courtesy of John Kelley

Harney series; fine, smectitic, mesic Typic Argiustolls; courtesy of Kansas State Research and Extension

Dothan series; fine-loamy, kaolinitic, thermic Plinthic Kandiudults; courtesy of John Kelley

Appling series; fine, kaolinitic, thermic Typic Kanhapludults; courtesy of John Kelley

Lynn Haven series; sandy, siliceous, thermic Typic Alaquods; courtesy of John Kelley

Cecil series; fine, kaolinitic, thermic Typic Kanhapludults; courtesy of John Kelley

Unknown series; fine, smectitic, hyperthermic Oxyaquic Vertic Hapludalf, courtesy of Stan Buol

Third row, left to right:

Altavista series; fine-loamy, mixed, semiactive, thermic Aquic Hapludults; courtesy of John Kelley

Duplin series; fine, kaolinitic, thermic Aquic Paleudults; courtesy of John Kelley

Unknown series; fine-loamy, mixed, superactive, thermic Typic Calciargid; courtesy of Stan Buol

Tonka series; fine, smectitic, frigid Argiaquic Argialbolls; courtesy of John Kelley

Biltmore series; mixed, mesic Typic Udipsamments; courtesy of John Kelley

Goldston series; loamy-skeletal, siliceous, semiactive, thermic, shallow Typic Dystrudepts; courtesy of John Kelley

Cowarts series; fine-loamy, kaolinitic, thermic Typic Kanhapludults; courtesy of John Kelley

Fourth row, left to right:

Murville series; sandy, siliceous, thermic Umbric Endoaquods courtesy of John Kelley

Tuxekan series; coarse-loamy over sandy or sandy-skeletal, mixed, superactive Typic Humicryods; courtesy of John Kelley

Westfield series; fine, kaolinitic, mesic Typic Kanhapludults; courtesy of John Kelley

Bonneau series; loamy, siliceous, subactive, thermic Arenic Paleudults; courtesy of John Kelley

Myatt series, fine-loamy, siliceous, active, thermic Typic Endoaquults; courtesy of John Kelley

Hard Labor series; fine, kaolinitic, thermic Oxyaquic Kanhapludults; courtesy of John Kelley

Rains series; fine-loamy, siliceous, semiactive, thermic Typic Paleaquults; courtesy of John Kelley