The right tree for the job
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CTA. 1996. The right tree for the job. Spore 65. CTA, Wageningen, The Netherlands.
Permanent link to this item: http://hdl.handle.net/10568/47471
Nitrogen fixing trees for acid soils edited by Mark Powells 1996 110pp Nitrogen Fixing Tree Association, Winrock International 38 Winrock Drive, Morrilton, Arkansas 72110 9537, USA Choosing the right trees ISNAR Research Report 8 by S
Many nitrogen-fixing tree species are tolerant of acid soils. Planted in agroforestry systems, they provide a low-input technology that help farmers overcome limitations to plant growth caused by lack of nitrogen. Only recently have researchers begun to evaluate different nitrogen fixing species for agroforestry systems on acid soils. Nitrogen fixing trees for acid soils is a manual produced by the participants who amended a conference of the same title and whose objective it was to produce a practical field guide for selecting, evaluating and growing nitrogen fixing trees on acid soils. Nitrogen fixing trees for acid soils edited by Mark Powells 1996 110pp Nitrogen Fixing Tree Association, Winrock International 38 Winrock Drive, Morrilton, Arkansas 72110 9537, USA Researchers and farmers have different perspectives when choosing tree species that will give the greatest benefit. These perspectives have to be merged when setting priorities for deciding on which species are to be researched for genetic improvement. The poor knowledge base on multipurpose trees makes estimation of the possible effects on research efforts more difficult to assess than for agricultural commodities. The large number of possible species, and the paucity of information on these species, necessitated the design of a priority-setting process radically different from traditional scoring or economic surplus approaches. Choosing the right trees setting priorities for multipurpose tree improvement is a research report in which the procedures for setting these innovative priorities for research are documented: they are structured, objective and involve both researchers and farmers. The proceedures were tested in the humid lowlands of West Africa. Choosing the right trees ISNAR Research Report 8 by S Franzel, H Jaenicke and W Janssen 1996 87pp ISBN 92 9118 0254 ISSN 1021 4429 ISNAR, PO Box 93375, 2509 AJ The Hague, THE NETHERLANDS