Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/17584 |
Resumo: | Tropical Africa south of the Sahara consists of isolated areas of shifting cultivation and larger areas of more or less dense forests, bushes and grassland natural fallows. A few years of cultivation on slash and bum cleared land is alternated with varying periods of fallow during which soil fertility is recuperated if these periods are long enough. Legume trees play an important role in restoring soil fertility and are regular components of natural and also planted fallows. Besides many miscellaneous uses some of these trees have high protein and nutritious seeds for human and animal food. Other legume trees produce leaves which can be eaten as vegetables. These features together with agroforestry use for timber and fuelwood make tree legumes an important part of fallows. Research should concentrate on multiple utility of tree legumes and focalize agricultural systems which relay on them as nitrogen source for agriculture. |
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Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resourcesLeguminosas arbóreas na África: prioridades para pesquisa sobre exploração múltiplaN2 fixationfixação de N2Tropical Africa south of the Sahara consists of isolated areas of shifting cultivation and larger areas of more or less dense forests, bushes and grassland natural fallows. A few years of cultivation on slash and bum cleared land is alternated with varying periods of fallow during which soil fertility is recuperated if these periods are long enough. Legume trees play an important role in restoring soil fertility and are regular components of natural and also planted fallows. Besides many miscellaneous uses some of these trees have high protein and nutritious seeds for human and animal food. Other legume trees produce leaves which can be eaten as vegetables. These features together with agroforestry use for timber and fuelwood make tree legumes an important part of fallows. Research should concentrate on multiple utility of tree legumes and focalize agricultural systems which relay on them as nitrogen source for agriculture.A África tropical ao sul do Saara consiste de manchas isoladas de agricultura exploratória e de áreas maiores de florestas mais ou menos densas, savanas e prados naturais. Alguns anos de agricultura após queimada da vegetação natural são seguidos por períodos de comprimento variável de capoeiras, durante os quais a fertilidade do solo é restaurada se o tempo for suficientemente longo. As leguminosas arbóreas fazem parte importante das capoeiras, e trazem contribuição importante para a restauração da fertilidade do solo. Ao lado de muitas utilidades variadas, podem dar frutos ricos em proteína para a alimentação humana e animal e folhas que são usadas como verduras nas épocas escassas. Estas características, junto com as qualidades agroflorestais de produzir madeiras e lenha, fazem das leguminosas arbóreas a parte mais importante das capoeiras. A pesquisa deveria focalizar a utilidade múltipla destas espécies e desenvolver sistemas agrícolas baseados em nitrogênio proveniente desta fonte.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraOkigbo, Bede. N.2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17584Pesquisa Agropecuaria Brasileira; v.19, s/n, jun. 1984; 325-330Pesquisa Agropecuária Brasileira; v.19, s/n, jun. 1984; 325-3301678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/17584/11807info:eu-repo/semantics/openAccess2014-04-16T19:15:45Zoai:ojs.seer.sct.embrapa.br:article/17584Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T19:15:45Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources Leguminosas arbóreas na África: prioridades para pesquisa sobre exploração múltipla |
title |
Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources |
spellingShingle |
Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources Okigbo, Bede. N. N2 fixation fixação de N2 |
title_short |
Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources |
title_full |
Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources |
title_fullStr |
Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources |
title_full_unstemmed |
Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources |
title_sort |
Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources |
author |
Okigbo, Bede. N. |
author_facet |
Okigbo, Bede. N. |
author_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Okigbo, Bede. N. |
dc.subject.por.fl_str_mv |
N2 fixation fixação de N2 |
topic |
N2 fixation fixação de N2 |
description |
Tropical Africa south of the Sahara consists of isolated areas of shifting cultivation and larger areas of more or less dense forests, bushes and grassland natural fallows. A few years of cultivation on slash and bum cleared land is alternated with varying periods of fallow during which soil fertility is recuperated if these periods are long enough. Legume trees play an important role in restoring soil fertility and are regular components of natural and also planted fallows. Besides many miscellaneous uses some of these trees have high protein and nutritious seeds for human and animal food. Other legume trees produce leaves which can be eaten as vegetables. These features together with agroforestry use for timber and fuelwood make tree legumes an important part of fallows. Research should concentrate on multiple utility of tree legumes and focalize agricultural systems which relay on them as nitrogen source for agriculture. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-16 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/17584 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/17584 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/17584/11807 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.19, s/n, jun. 1984; 325-330 Pesquisa Agropecuária Brasileira; v.19, s/n, jun. 1984; 325-330 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416689261477888 |