Soil Science Simplified

Soil Science Simplified presents the basic principles of soil science that govern the use of soil for all purposes related to plant growth, soils engineering, and conservation.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 soilsThis 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.

Milo I. Harpstead, Ph.D., is certified as a Professional Soil Classifier with the American Registry of Certified Professionals in Agronomy, Crops, and Soils (ARCPACS) within the Society of American Agriculture. He is a former Professor of Soil Science at the University of Wisconsin-Stevens Point. Dr. Harpstead also has taught and supervised research for students in Nigeria, Malaysia, Germany, and Australia.

Thomas J. Sauer, Ph.D., spent three years as a Soil Physicist with the USDA Agricultural Research Service Biomass Center in Arkansas and is now a Soil Scientist for the national Soil Tilth Laboratory, Ames, Iowa, where he conducts research on soil management impacts related to agroecology and air quality.

William F. Bennett, Ph.D., has been involved in teaching Soils, Soil Fertility, and Crops for over 40 years. He is a former Director of Development for the College of Agricultural Science and national Resources at Texas Tech University in Lubbock. In addition to work as a Soil fertility Consultant, Dr. Bennett is currently involved in educational programs in the fertilizer industry, with emphasis on the Certified Crop Advisor Program.

Preface

vii

The Soil around Us

3

(6)

Soil Formation

9

(18)

Soil Physical Properties

27

(12)

Soil Biology

39

(18)

Soil Colloids and Chemistry

57

(18)

Soil Water

75

(20)

Soil Temperature and Heat Flow

95

(14)

Soil Fertility and Plant Nutrition

109

(22)

Soil Management

131

(14)

Soil Conservation

145

(16)

Soil Classification

161

(24)

Soil Surveys

185

(8)

Soil Engineering

193

(14)

Glossary

207

(10)

Index

217

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Soil Science Simplified

Summary

Author Biography

Table of Contents

Supplemental Materials