Published in Agron. J. 103:1645–1654 (2011) Posted online 14 Sep 2011 doi:10.2134/agronj2011.0131 Available freely online through the author-supported open access option. Copyright © 2011 by the American Society of Agronomy, 5585 Guilford Road, Madison, WI 53711. All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanica...
