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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Unidades Centrais. |
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Data corrente: |
27/06/1995 |
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Data da última atualização: |
19/07/1998 |
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Autoria: |
BUDOWSKI, G.; KASS, D. C. L.; RUSSO, R. O. |
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Título: |
Leguminous trees for shade. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.19, s/n, p. 205-222, jun. 1984. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Use of leguminous trees to provide shade, especially in perennial crops, would appear to be an ancient agricultural practice, probably coinciding with the domestication of perennials such as tea, coffee and cocoa. Leguminous trees can also be found in association with annual crops, in pastures, and in situations such as living fenceposts, where shade is not clearly being provided to an associate species. The factors which might influence the choice of leguminous as apposed to non-leguminous trees to provide shade in such situations are considered. Various such association are described in some detail, in an attempt to elucidate some of the ecological interrelationships that are probably reflected in traditional agroforestry practices. It is concluded that not only the possibility of improving nitrogen nutrition but also other characteristics, such as types of shade, coppicing ability and ease of husbandry, might have favored the selection of leguminous trees for shade. Many of these areas would appear to merit considerably more research with the objective of obtaining more quantitative data than is presently available. |
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Palavras-Chave: |
Fixacao de N2; N2 fixation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01581naa a2200169 a 4500
001 1104891
005 1998-07-19
008 1984 bl uuuu u00u1 u #d
100 1 $aBUDOWSKI, G.
245 $aLeguminous trees for shade.
260 $c1984
520 $aUse of leguminous trees to provide shade, especially in perennial crops, would appear to be an ancient agricultural practice, probably coinciding with the domestication of perennials such as tea, coffee and cocoa. Leguminous trees can also be found in association with annual crops, in pastures, and in situations such as living fenceposts, where shade is not clearly being provided to an associate species. The factors which might influence the choice of leguminous as apposed to non-leguminous trees to provide shade in such situations are considered. Various such association are described in some detail, in an attempt to elucidate some of the ecological interrelationships that are probably reflected in traditional agroforestry practices. It is concluded that not only the possibility of improving nitrogen nutrition but also other characteristics, such as types of shade, coppicing ability and ease of husbandry, might have favored the selection of leguminous trees for shade. Many of these areas would appear to merit considerably more research with the objective of obtaining more quantitative data than is presently available.
653 $aFixacao de N2
653 $aN2 fixation
700 1 $aKASS, D. C. L.
700 1 $aRUSSO, R. O.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.19, s/n, p. 205-222, jun. 1984.
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Embrapa Unidades Centrais (AI-SEDE) |
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