Soil Sci. Soc. Am. J. 78:3–10 doi:10.2136/sssaj2013.07.0287dgs Received 17 July 2013. *Corresponding author ([email protected]). © Soil Science Society of America, 5585 Guilford Rd., Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any info...
