©Copyright, Winrock International Institute for Agricultural Development, 1996. All rights reserved. No part of this publication may be reproduced without written permission from the copyright owner.

Powell, Mark, H., editor
Nitrogen fixing trees for acid soils: a field manual

Published by Winrock International's Nitrogen Fixing Tree Association and the Tiawan Forestry Research Institute with financial support from the Council of Agriculture (Taiwan).

Winrock International
38 Winrock Drive
Morrilton, Arkansas 72110-9537, USA
Telephone: (501) 727-5435
Faxsimile: (501) 727-5417

Taiwan Forestry Research Institute
53 Nan-Hai Road, Taipei, Taiwan, Republic of China
Telephone: 886-2-381 -7107
Faxsimile: 886-2-314-2234

Council of Agriculture, Executive Yuan
37 Nan-Hai Road, Taipei, Taiwan, Republic of China

In cooperation with:

United States Department of Agriculture -Forest Service - Tropical Forestry, Program
United States Department of Agriculture - Forest Service - Forestry, Support Program
Centro Agron¢mico Tropical de Investigaci¢n y Ensena¤za
Centro Internacional de Agricultura Tropical
Centro de Agroforesteria pare el Desarrollo Sostenible, Universidad Aut¢noma Chapingo, Mexico
Danish International Development Agency
International Centre for Research in Agroforestry

Photograph on front cover by James M. Roshetko
Graphics on front and back cover by Joyce Olds

Mark H. Powell, editor

The Workshop on Nitrogen Fixing Trees for Acid Soils was organized by Donald L. Kass and Alberto Camero of the Centro Agron¢mico de Investigaci¢n y Ense¤anza (CATIE), and Mark Powell of Winrock International. Members of the Planning Committee provided assistance before and during the workshop. These were Robin Maille and Jan Engert with the International Forestry Program of the United States Department of Agriculture Forest Service (USDA/FS/ IF), P. C. Kerridge with the Centro Internacional de Agricultura Tropical (CIAT), Dale 0. Evans with the University of Hawaii. and Lawrence T. Szott.

Financial support for the workshop was provided by the:

· International Forestry Program of the United States Department of Agriculture Forest Service (USDA /FS /IF)
· Danish International Development Assistance Agency (DANIDA)
· Centro Internacional de Agricultura Tropical (CIAT)
· International Center for Research in Agroforestry (ICRAF)
· Centro de Agroforesteria pare el Desarrollo Sostenible, Universidad Aut¢noma Chapingo, Mexico

Support for the publication of this field manual was provided by USDA/FS/IF, CIAT, and the Centro de Agroforesteria pare el Desarrollo Sostenible, Universidad Aut¢noma Chapingo, Mexico. The Forestry Research Institute of the Taiwan Council of Agriculture arranged and supported printing and distribution.

The editor extends a special thanks to the authors who drafted the chapters in this manual during and after the workshop. All authors responded to editorial suggestions and helped make this manual as accurate and complete as possible.

In addition to the authors listed, the following workshop participants provided valuable comments on Chapter 2 during the drafting process: Pedro Argel, Joanne Chamberlain, Carlos Lascano, Hector Melo, Brigitte Maass, Conrado Parraguirre, Gonzalo de las Salas, and Mamerto Valerio. Trudy Stacy, NFTA Secretary of Administration, keyed in the text, Sidney B. Westley and Jim Roshetko provided editorial assistance, and Joyce Olds provided graphics and design support. To all these individuals and institutions, my grateful thanks.