Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources

Detalhes bibliográficos
Autor(a) principal: Okigbo, Bede. N.
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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spelling 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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