Soil Science Simplified Sixth Edi tion Neal S. Eash
Professor of Biosystems Engineering & Soil Science University ofTennessee in Knoxville, Tennessee.
Thomas J. Sauer Research Soil Scientist in the Soil, Water, and Air Research Unit at the USDA Agricultural Research Service in Ames, lA, USA.
Deb O'Dell Doctoral Candidate in the Biosystems Engineering & Soil Science Department at the University of Tennessee in Knoxville, TN, USA.
Evah Odoi Adjunct Assistant Professor in the Biosystems Engineering & Soil Science at the University of Tennessee in Knoxville, TN, USA.
Illustrated by Mary C. Bratz
WI LEY Blackwell
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ISBN: 9781118540695 Cover image: Mycola, wet spot on cracked earth under dramatic sky, iStock / Getty Images Plus Typeset in 9/l1pl TimesLTStd by SPi Global, Chennai, India Printed
and bound in Malaysia
by Vivar Printing
6 3 3 5 6 _..
~DB JUN 2016
Introduction to Soil,
Soil Physical Properties,
Soil Biological Properties,
Soil Chemical Properties,
Soil Fertility and Plant Nutrition,
77 95 107
Soil Conservation and the Environment,
Soil Classification and Surveys,
Soil and Its Uses, 223
G LO S S A R Y IN D E X
50115cience 51mplifled has enjoyed a unique status among introductory soil science textbooks for more than a quarter of a century. The readable yet comprehensive coverage of soil science topics has made it a favorite of instructors teaching soil science to introductory soils students. non-majors, and professionals working in a host of agricultural and environmental applications. 50115cience Simptiiied, Sixtb Editlon is a significant update and revision of the classic introductory soils text. The new edition includes even greater coverage of non-agricultural uses of soils ranging from municipal to engineering uses, a new chapter on conservation agriculture covering no-till, hoetill, and the methodology of cover crops. crop rotations, nitrogen contribution, and worldwide trends in conservation agriculture. Chapters covering the basic scientific aspects of soil from its physical. chemical, and biological properties to basic formation are also thoroughly revised and updated. This most recent edition of this text is a valuable introduction to soil science that addresses many new developments to this ever-changing field, while maintaining the elements that have made it a user-friendly introductory text for decades. 50115cience 51mplifled is the essential introductory text for non-soils majors and field practitioners. • Expanded coverage of non-agricultural uses of soil, ranging from municipal to engineering uses • Additional discussion of environmental uses of soils and soil conservation • Newly revised chapters on the basic scientific aspects of soil from its phvsical. chemical, and biological properties, through to basic formation • Coverage of conservation agriculture including discussion of no-till, hoe-till method common in Africa, and overall methodology on cover crops, crop rotations, nitrogen contribution by cover crops. and worldwide trends in conservation agriculture Neal S. Eash is a Professor of Biosystems Engineering & Soil Science at the University of Tennessee in Knoxville, TN, USA. Thomas J. Sauer is a Research Soil Scientist in the Soil. Water, and Air Research Unit at the USDA Agricultural Research Service in Ames, lA, USA. Deb O'Dell is a Doctoral Candidate in the Biosystems Engineering & Soil Science Department at the University of Tennessee in Knoxville, TN, USA. Evah Odoi is an Adjunct Assistant Professor in the Biosystems Engineering & Soil Science at the University of Tennessee in Knoxville, TN, USA.