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Agroforestry
Extension
Resources
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 A090 A Tree for All Reasons
The Introduction and Evaluation of Multipurpose Trees for Agroforestry
P.J.Wood and J.Burley 1991. ICRAF. Science and Practice of Agroforestry Series no.5 158pp.
Paperback. ISBN 92 9059 075 0
This is an attractively produced book, with many line illustrations and clearly written text. Highly
recommended. The book's blurb states:
"This source book was written to provide guidance to field workers on the introduction and evaluation
of woody perennials for use in
agroforestry. In this context, introduction means taking a species to an environment where it is not
well known or established and
evaluation refers to the process of determining the suitability of a particular species for use in an
agroforestry system. The evaluation
process seeks, first, to determine the adaptation of the species to the site, as demonstrated by its
survival and early growth, and, second,
to study its phenology and morphology as a guide to its suitability for a specific agroforestry system.
The authors' objectives may be
summarized as follows:
- To give basic principles for multipurpose-tree evaluation that will help scientists who are designing
agroforestry research programmes
- To present a logical, chronological sequence of the stages of multipur- pose-tree research, including
the early study of possible
responses to management
- To give guidance on the preparation of simple, robust experimental designs
- To recommend simple assessment procedures."
Available as paperback from ICRAF:
http://www.worldagroforestry.org
CONTENTS:
The book is organized in four sections and four supplements.
The sections cover:
Background to species selection for agroforestry
Multipurpose trees: their selection and role in land-use systems
Diagnosing land-use problems and designing agroforestry technologies
The ideal tree or "ideotype" for an agroforestry system.
Research planning and design
Research objectives and planning
Designing an experiment
Identifying suitable germplasm
Choosing the experimental site
Assessment and evaluation
Assessment and recording
Farmer participation in research and evaluation
Important areas of multipurpose-tree research
Seed collection, storage and testing
Nursery practice
Tree establishment
Genetic evaluation.
The supplements include:
Checklist of principle multipurpose-tree characteristics and products,
List of assessments for multipurpose-tree evaluation with sample formats,
Experimental designs,
Summary plans for 10 types of experiment,
Glossary of terms,
Names and addresses of useful organizations, and
references.
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