Page 1

-SIXTH EDITION-

SOIL SCIENCE

IMP-l E


Soil Science Simplified Sixth Edi tion Neal S. Eash

SEDEDE GUANACASTE

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


Copyright Š 2016 by John Wiley & Sons, Inc. All rights reserved Published by John Wiley & Sons, Inc., Hoboken, New Jersey Published simultaneously in Canada No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 ofthe 1976 United States Copyright Act, without either the prior written perrnission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 750-4470, or on the web at www.copyright.com. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Son s, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online al hllP://www.wiley.com/go/permission. Lirnit of Liability/Disclairner of Warranty: While the publisher and author have used their bese efforts in preparing this book, they make no representations or warranties with respect to the accuracy or cornpleteness of the contents of this book and specificaliy disclaim any implied warranties of merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives or written sales materials. The advice and strategies contained herein may not be suitable for your situation. You should consult with a professional where appropriate. Neither the publisher nor author shall be liable for any loss of profit or any other commercial damages, including but not lirnited to special, incidental, consequential, or other damages. For general information on our other products and services or for technical support, please contact our Custorner Care Department within the United States at (800) 762-2974, outside the United States at (317) 572-3993 or fax (317) 572-4002. Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be available in electronic forrnats. For more information about Wiley products, visit our web site al www.wiley.com. Library of Congress Cataloging-in-Publication

applied foro

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

Sdn Bhd

2016

6 3 3 5 6 _..

~DB JUN 2016


CONTENTS

P

R

E FA

e

E

vii

I

1

Introduction to Soil,

2

Soil Formation,

3

Soil Physical Properties,

4

Soil Biological Properties,

35

5

Soil Chemical Properties,

57

6

Soil Water,

7

Soil Temperature,

8

Soil Fertility and Plant Nutrition,

9

Soil Management,

7 23

77 95 107

145

10

Soil Conservation and the Environment,

11

Conservation Agriculture,

12

Soil Classification and Surveys,

13

Soil and Its Uses, 223

G LO S S A R Y IN D E X

I

I

159

175 187

243

255

v


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.

978-1-118-54069-5

II

Soil Science Simplified  
Soil Science Simplified  
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