SOIL FERTILITY & PLANT NUTRITION Potassium Release in Representative Maize- Producing Soils of Thailand Ammonium acetate K does not adequately measure available K in the mineralogically diverse

Soil Sci. Soc. Am. J. 72:791–797doi:10.2136/sssaj2007.0027Received 18 Jan. 2007.*Corresponding author (rsyost@hawaii.edu).© Soil Science Society of America677 S. Segoe Rd. Madison WI 53711 USAAll 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 information storage and retrieval system, without permission in writing from the publisher. Permission for printing and for reprinting the material contained herein has been obtained by the publisher.

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