The fourth edition has been expanded to give greater depth to topics included in the previous edition. Improvements include:
1 Updated examples, figures, and text reflecting current research and practice
2 Additional discussion related to the environmental aspects of soil science
3 New developments brought about by computer technology
4 The latest changes in the classification of soils

This easily readable resource is ideal for use as a high school agriculture textbook, an undergraduate introductory soil science supplemental text, or an illustrated reference for students, farmers, and related professionals.