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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
20/02/2009 |
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Data da última atualização: |
16/11/2017 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CAZÉ, A. L. R.; LUCENA, V. S.; MENEZES, I. P. P. de; HOFFMANN, L. V.; RIBEIRO, J. L. |
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Afiliação: |
Ana Luíza Ramos Cazé, Embrapa Algodão; Valeska Silva Lucena, Embrapa Algodão; Ivandilson Pessoa Pinto de Menezes, Embrapa Algodão; Lúcia Vieira Hoffmann, Embrapa Algodão; José Lopes Ribeiro, Embrapa Meio-Norte. |
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Título: |
Caracterização in situ de populações de Gossypium hirsutum L. e G. barbadense L. (Malvaceae) do Estado do Piauí. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE BOTÂNICA, 59.; REUNIÃO NORDESTINA DE BOTÂNICA, 31.; CONGRESO LATINOAMERICANO Y DEL CARIBE DE CACTÁCEAS Y OTRAS SUCULENTAS, 4.; CONGRESS OF INTERNATIONAL ORGANIZATION FOR SUCULENT PLANT STUDY, 30., 2008, Natal. Atualidades, desafios e perspectivas da botânica no Brasil: resumos. Natal: UFERSA: UFRN: SBB, 2008. |
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Páginas: |
p. 268 |
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Idioma: |
Português |
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Palavras-Chave: |
Piauí. |
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Thesagro: |
Algodão; Conservação; Recurso Genético. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 00932naa a2200217 a 4500
001 1070547
005 2017-11-16
008 2008 bl uuuu u00u1 u #d
100 1 $aCAZÉ, A. L. R.
245 $aCaracterização in situ de populações de Gossypium hirsutum L. e G. barbadense L. (Malvaceae) do Estado do Piauí.
260 $c2008
300 $ap. 268
650 $aAlgodão
650 $aConservação
650 $aRecurso Genético
653 $aPiauí
700 1 $aLUCENA, V. S.
700 1 $aMENEZES, I. P. P. de
700 1 $aHOFFMANN, L. V.
700 1 $aRIBEIRO, J. L.
773 $tIn: CONGRESSO NACIONAL DE BOTÂNICA, 59.; REUNIÃO NORDESTINA DE BOTÂNICA, 31.; CONGRESO LATINOAMERICANO Y DEL CARIBE DE CACTÁCEAS Y OTRAS SUCULENTAS, 4.; CONGRESS OF INTERNATIONAL ORGANIZATION FOR SUCULENT PLANT STUDY, 30., 2008, Natal. Atualidades, desafios e perspectivas da botânica no Brasil: resumos. Natal: UFERSA: UFRN: SBB, 2008.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
10/03/2017 |
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Data da última atualização: |
20/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
JOSLIN, A.; MARKEWITZ, D.; MORRIS, L. A.; OLIVEIRA, F. de A.; KATO, O. R. |
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Afiliação: |
Aaron Joslin, The University of Georgia; Daniel Markewitz, The University of Georgia; Lawrence A. Morris, The University of Georgia; Francisco de Assis Oliveira, UFRA; OSVALDO RYOHEI KATO, CPATU. |
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Título: |
Improved fallow: growth and nitrogen accumulation of five native tree species in Brazil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, v. 106, n. 1, p 1-15, Sep. 2016. |
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DOI: |
10.1007/s10705-016-9783-0 |
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Idioma: |
Inglês |
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Conteúdo: |
Small-holding farmers of the Brazilian Amazon often use a rotation of secondary forest, slash-and-burn land-clearing and fallow phase regeneration for agriculture. In recent decades reduction of the fallow phase from ~20 to ~5 years has limited nutrient accumulation by fallow vegetation to sustain future crop growth. Slash-and-mulch and improved fallow schemes, including use of native nitrogen-fixing species, have been investigated to address the issue. In the current study in eastern Amazonia of Brazil, a 7-year old forest site was slash-and-mulched and four treatments applied; no fertilizer and no N-fixer as the control; no fertilizer with N-fixer; P + K fertilizer with no N-fixer; P + K fertilizer with N-fixer. Manioc was planted in all plots at establishment. After manioc harvest and 4 years of fallow, a total of 6 years after planting, use of P + K fertilizer increased tree growth of four of five planted species. In the presence of the N-fixer I. edulis, trends of increased growth and survival among these four tree species were observed. After 6 years, fertilization with P + K significantly increased tree volume and biomass. The N-fixer lowered survival of other species yet increased estimated N uptake of planted trees. Use of P + K fertilizer without N-fixer might allow for commercial harvest of S. amazonicum at the end of one 7-year crop-fallow cycle without jeopardizing agroecosystem N stocks. Use of P + K fertilizer in the presence of I. edulis can increase planted-tree N-content but increases in competition may limit commercial harvest yet may better sustain future food crop growth. MenosSmall-holding farmers of the Brazilian Amazon often use a rotation of secondary forest, slash-and-burn land-clearing and fallow phase regeneration for agriculture. In recent decades reduction of the fallow phase from ~20 to ~5 years has limited nutrient accumulation by fallow vegetation to sustain future crop growth. Slash-and-mulch and improved fallow schemes, including use of native nitrogen-fixing species, have been investigated to address the issue. In the current study in eastern Amazonia of Brazil, a 7-year old forest site was slash-and-mulched and four treatments applied; no fertilizer and no N-fixer as the control; no fertilizer with N-fixer; P + K fertilizer with no N-fixer; P + K fertilizer with N-fixer. Manioc was planted in all plots at establishment. After manioc harvest and 4 years of fallow, a total of 6 years after planting, use of P + K fertilizer increased tree growth of four of five planted species. In the presence of the N-fixer I. edulis, trends of increased growth and survival among these four tree species were observed. After 6 years, fertilization with P + K significantly increased tree volume and biomass. The N-fixer lowered survival of other species yet increased estimated N uptake of planted trees. Use of P + K fertilizer without N-fixer might allow for commercial harvest of S. amazonicum at the end of one 7-year crop-fallow cycle without jeopardizing agroecosystem N stocks. Use of P + K fertilizer in the presence of I. edulis can increase planted-... Mostrar Tudo |
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Palavras-Chave: |
Espécie arbórea. |
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Thesagro: |
Nitrogênio; Pousio. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02274naa a2200217 a 4500
001 2066731
005 2022-05-20
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1007/s10705-016-9783-0$2DOI
100 1 $aJOSLIN, A.
245 $aImproved fallow$bgrowth and nitrogen accumulation of five native tree species in Brazil.$h[electronic resource]
260 $c2016
520 $aSmall-holding farmers of the Brazilian Amazon often use a rotation of secondary forest, slash-and-burn land-clearing and fallow phase regeneration for agriculture. In recent decades reduction of the fallow phase from ~20 to ~5 years has limited nutrient accumulation by fallow vegetation to sustain future crop growth. Slash-and-mulch and improved fallow schemes, including use of native nitrogen-fixing species, have been investigated to address the issue. In the current study in eastern Amazonia of Brazil, a 7-year old forest site was slash-and-mulched and four treatments applied; no fertilizer and no N-fixer as the control; no fertilizer with N-fixer; P + K fertilizer with no N-fixer; P + K fertilizer with N-fixer. Manioc was planted in all plots at establishment. After manioc harvest and 4 years of fallow, a total of 6 years after planting, use of P + K fertilizer increased tree growth of four of five planted species. In the presence of the N-fixer I. edulis, trends of increased growth and survival among these four tree species were observed. After 6 years, fertilization with P + K significantly increased tree volume and biomass. The N-fixer lowered survival of other species yet increased estimated N uptake of planted trees. Use of P + K fertilizer without N-fixer might allow for commercial harvest of S. amazonicum at the end of one 7-year crop-fallow cycle without jeopardizing agroecosystem N stocks. Use of P + K fertilizer in the presence of I. edulis can increase planted-tree N-content but increases in competition may limit commercial harvest yet may better sustain future food crop growth.
650 $aNitrogênio
650 $aPousio
653 $aEspécie arbórea
700 1 $aMARKEWITZ, D.
700 1 $aMORRIS, L. A.
700 1 $aOLIVEIRA, F. de A.
700 1 $aKATO, O. R.
773 $tNutrient Cycling in Agroecosystems$gv. 106, n. 1, p 1-15, Sep. 2016.
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