Legume trees in semi-arid and arid areas
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/17477 |
Resumo: | A review of the research and development activities on nitrogen fixing trees for semi-arid regions is presented. In the period from 1980 through 1983 much new information on pod productivity, on natural stand nitrogen fixation and on greenhouse mineral nutrition has become available. Early results from small plot plantation work indicate a biomass productivity of 10-13 dry metric tons per hectare per year. Clones have been made of promising individual trees and research on rooting of cuttings is rapidly approaching commercialization. Tissue culture propagation of semi-arid nitrogen fixing trees has only just begun. Procedures have been developed employing subsoiling and herbicides that yield more than 90% survival on sites receiving 500 mm annual rainfall. A tabular review is presented of the major research organizations and donors involved in semi-arid nitrogen fixing trees. Major technical constraints are coping with semi-arid soils that are generally low in available phosphorus, iron, zinc and manganese, range in soil texture from cracking clays to high bulk density sands or rocky desert pavement, and that vary in pH from 6.5 to 9.5. Pest management issues (insects and diseases) have not yet been studied in semi-arid nitrogen fixing trees and should be addressed before large scale plantations are undertaken. The excellent progress made from 1980 through 1983 suggests a very bright future for semi-arid nitrogen fixing trees. |
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Legume trees in semi-arid and arid areasLeguminosas arbóreas para áreas semi-áridas e áridasN2 fixation; nodules; saline soilsfixação de N2; nódulos; solos salinosA review of the research and development activities on nitrogen fixing trees for semi-arid regions is presented. In the period from 1980 through 1983 much new information on pod productivity, on natural stand nitrogen fixation and on greenhouse mineral nutrition has become available. Early results from small plot plantation work indicate a biomass productivity of 10-13 dry metric tons per hectare per year. Clones have been made of promising individual trees and research on rooting of cuttings is rapidly approaching commercialization. Tissue culture propagation of semi-arid nitrogen fixing trees has only just begun. Procedures have been developed employing subsoiling and herbicides that yield more than 90% survival on sites receiving 500 mm annual rainfall. A tabular review is presented of the major research organizations and donors involved in semi-arid nitrogen fixing trees. Major technical constraints are coping with semi-arid soils that are generally low in available phosphorus, iron, zinc and manganese, range in soil texture from cracking clays to high bulk density sands or rocky desert pavement, and that vary in pH from 6.5 to 9.5. Pest management issues (insects and diseases) have not yet been studied in semi-arid nitrogen fixing trees and should be addressed before large scale plantations are undertaken. The excellent progress made from 1980 through 1983 suggests a very bright future for semi-arid nitrogen fixing trees.Foi feita uma revisão da pesquisa sobre leguminosas arbóreas para áreas semi-áridas. No período compreendido entre 1980 e 1983, muita informação sobre produção de vagens, fixação de N2 em condições naturais e nutrição mineral tornou-se disponível. Os resultados iniciais obtidos em pequenas parcelas indicam uma produção de biomassa de Prosopis entre 10-13 toneladas de peso seco por hectare/ano. Propagação vegetativa por cultura de tecidos é uma área de pesquisa recém-iniciada para as árvores fixadores de N2 de regiões semi-áridas. Por outro lado, clonagens de árvores individuais mais promissoras foram feitas, e a pesquisa sobre o enraizamento de estacas está rapidamente chegando ao nível comercial. Técnicas de manejo já foram desenvolvidas, empregando subsolagem e herbicidas, as quais permitem mais que 90% de sobrevivência de mudas em localidades com cerca de 500 mm anuais de chuvas. As principais instituições de pesquisa e financiadoras envolvendo árvores fixadoras de N2 para o semi-árido são listadas. Os maiores problemas técnicos a enfrentar são os solos do semi-árido que, geralmente, são deficientes em fósforo disponível, ferro, zinco e manganês, além de apresentarem ampla variação de textura, desde os argilosos aos arenosos e rochosos, e variação de pH de 6,5 a 9,5. O manejo das pragas e doenças não tem sido ainda objeto de estudo, e deve ser investigado antes que plantações em grande escala sejam estabelecidas. Entretanto, o excelente progresso obtido no período de 1980/83 sugere um futuro brilhante para as árvores fixadoras de nitrogênio, adaptadas às regiões semi-áridas.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFelker, Peter2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17477Pesquisa Agropecuaria Brasileira; v.19, s/n, jun. 1984; 47-59Pesquisa Agropecuária Brasileira; v.19, s/n, jun. 1984; 47-591678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/17477/11718info:eu-repo/semantics/openAccess2014-04-16T19:15:44Zoai:ojs.seer.sct.embrapa.br:article/17477Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T19:15:44Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Legume trees in semi-arid and arid areas Leguminosas arbóreas para áreas semi-áridas e áridas |
title |
Legume trees in semi-arid and arid areas |
spellingShingle |
Legume trees in semi-arid and arid areas Felker, Peter N2 fixation; nodules; saline soils fixação de N2; nódulos; solos salinos |
title_short |
Legume trees in semi-arid and arid areas |
title_full |
Legume trees in semi-arid and arid areas |
title_fullStr |
Legume trees in semi-arid and arid areas |
title_full_unstemmed |
Legume trees in semi-arid and arid areas |
title_sort |
Legume trees in semi-arid and arid areas |
author |
Felker, Peter |
author_facet |
Felker, Peter |
author_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Felker, Peter |
dc.subject.por.fl_str_mv |
N2 fixation; nodules; saline soils fixação de N2; nódulos; solos salinos |
topic |
N2 fixation; nodules; saline soils fixação de N2; nódulos; solos salinos |
description |
A review of the research and development activities on nitrogen fixing trees for semi-arid regions is presented. In the period from 1980 through 1983 much new information on pod productivity, on natural stand nitrogen fixation and on greenhouse mineral nutrition has become available. Early results from small plot plantation work indicate a biomass productivity of 10-13 dry metric tons per hectare per year. Clones have been made of promising individual trees and research on rooting of cuttings is rapidly approaching commercialization. Tissue culture propagation of semi-arid nitrogen fixing trees has only just begun. Procedures have been developed employing subsoiling and herbicides that yield more than 90% survival on sites receiving 500 mm annual rainfall. A tabular review is presented of the major research organizations and donors involved in semi-arid nitrogen fixing trees. Major technical constraints are coping with semi-arid soils that are generally low in available phosphorus, iron, zinc and manganese, range in soil texture from cracking clays to high bulk density sands or rocky desert pavement, and that vary in pH from 6.5 to 9.5. Pest management issues (insects and diseases) have not yet been studied in semi-arid nitrogen fixing trees and should be addressed before large scale plantations are undertaken. The excellent progress made from 1980 through 1983 suggests a very bright future for semi-arid nitrogen fixing trees. |
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/17477 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/17477 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/17477/11718 |
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; 47-59 Pesquisa Agropecuária Brasileira; v.19, s/n, jun. 1984; 47-59 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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1793416680964096000 |