Nitrogen Economy in Tropical Soils Proceedings of the International
Nitrogen Economy in Tropical Soils presents an authoritative and comprehensive state-of-the-art review on soil/plant nitrogen inter-relationships, with special reference to tropical soils and crops in aerobic and anaerobic environments. Use of isotopicall
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Developments in Plant and Soil Sciences VOLUME 69
The titles published in this series are listed at the end of this volume.
Nitrogen Economy in Tropical Soils Proceedings of the International Symposium on Nitrogen Economy in Tropical Soils, held in Trinidad, W.I., January 9-14, 1994 Edited by
N.AHMAD The University of the West Indies St. Augustine Trinidad W.I.
Partly reprinted from Fertilizer Research, Volume 42, Nos. 1-3 (1995)
KLUWER ACADEMIC PUBLISHERS DORDRECHT / BOSTON / LONDON
A C.I.P. Catalogue record for this book is available from the Library of Congress.
ISBN -13: 978-94-010-7264-9 e-ISBN-13: 978-94-009-1706-4 DOl: 10.1007/978-94-009-1706-4
Published by Kluwer Academic Publishers, P.O. Box 17,3300 AA Dordrecht, The Netherlands. Kluwer Academic Publishers incorporates the publishing programmes of D. Reidel, Martinus Nijhoff, Dr W. Junk and MTP Press. Sold and distributed in the U.S.A. and Canada by Kluwer Academic Publishers, 101 Philip Drive, Norwell, MA 02061, U.S.A. In all other countries, sold and distributed by Kluwer Academic Publishers Group, P.O. Box 322, 3300 AH Dordrecht, The Netherlands.
Printed on acid-free paper
All Rights Reserved © 1996 Kluwer Academic Publishers Softcover reprint of the hardcover 1st edition 1996 No part of the material protected by this copyright notice may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage and retrieval system, without written permission from the copyright owner.
Contents
Preface
ix
*1.
Forms and nature of organic N in soil K.R. Kelley, FJ. Stevenson
*2.
Seasonal fluctuations of native available N and soil management implications M.T.F. Wong, S. Nortcliff
13
Effect of cultivation on the nitrogen fertility of selected agro-ecosystems in South Africa C.C. du Preez, M.E. du Toit
27
Assessment of biological nitrogen fixation S.K.A. Danso
33
High productivity analysis of 15N and 13C in soil/plant research A. Barrie, S.T. Brookes, SJ. Prosser, S. Debney
43
Adapting the potentially mineralizable N concept for the prediction of fertilizer N requirements C.A. Campbell, Y.W. Jame, 0.0. Akinrerni, M.L. Cabrera
61
Field application of the 15N isotope dilution technique for the reliable quantification of plant-associated biological nitrogen fixation R.M. Boddey, O.C. de Oliveira, BJ.R. Alves, S. Urquiaga
77
*8.
Rational nitrogen fertilization in intensive cropping systems C.W. Rice, J.L. Havlin, J.S. Schepers
89
*9.
Nitrogen assimilation by legumes - processes and ecological limitations S.Schubert
99
*3.
*4.
*5.
*6.
*7.
*10.
*11.
*12.
Fate of CO(NH2h-15N applied to taro (Colocasia esculenta var. esculenta) in an acid Vertisol of Trinidad N. Ramnanan, N. Ahmad, S.M. Griffith
109
Brown leaf spot disease and fertilizer interaction in irrigated rice growing on different soil types R.H. Phelps, C.R. Shand
117
Use of 15N for fertilizer N recovery and N mineralization studies in semi-arid Kenya C.J. Pilbeam, G.P. Warren
123
* Cha
