|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
10/03/2017 |
Data da última atualização: |
20/05/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
JOSLIN, A.; MARKEWITZ, D.; MORRIS, L. A.; OLIVEIRA, F. de A.; KATO, O. R. |
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. |
Título: |
Improved fallow: growth and nitrogen accumulation of five native tree species in Brazil. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, v. 106, n. 1, p 1-15, Sep. 2016. |
DOI: |
10.1007/s10705-016-9783-0 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Espécie arbórea. |
Thesagro: |
Nitrogênio; Pousio. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registros recuperados : 44 | |
1. | | FIGUEIREDO, R. de O.; MARKEWITZ, D. Hidrogeoquímica de um córrego amazônico: o caso de um igarapé na flona do Tapajós, Pará, Brasil. In: SEMINÁRIO DA REDE AGROHIDRO, 4., 2016, Brasília, DF. Água e agricultura: incertezas e desafios para a sustentabilidade frente às mudanças do clima e do uso da terra: anais. Planaltina, DF: Embrapa Cerrados, 2016. p. 114-121.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Meio Ambiente. |
| |
7. | | FIGUEIREDO, R. de O.; SOUSA, K. de A.; MARKEWITZ, D.; DAVIDSON, E. A. Alterações nas concentrações de ortofosfato em amostras de chuva, throughfall e litter leachate armazenadas em coletores instalados em área experimental na Floresta Nacional do Tapajós. In: CONGRESSO DE ECOLOGIA DO BRASIL, 6., 2003, Fortaleza, CE. Anais de trabalhos completos. Fortaleza: Universidade Federal do Ceará, 2003. p. 676-678.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
| |
8. | | MARKEWITZ, D.; FIGUEIREDO, R. D.; MELAC, J. M.; NOVO, E.; RICHEY, J. E.; RICHEY, J. River corridors of the Amazon Basin and their response to Anthropogenic Change: A look back and a glimpse forward. In: MEETING OF THE AMERICAN, 2010, Foz do Iguaçu. Meeting of the Americas Abstracts... Washington, US: American Geophysical Union, 2010. Não paginado. U41B-04.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
| |
10. | | PARRON, L. M.; BUSTAMANTE, M. M. C.; MARKEWITZ, D.; PRADO, C. L. Availability of Nutrients in Solutions in a Gallery Forest of Cerrado Biome. In: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos. Brasília, DF: LBA, 2004. Resumo 37.11-P.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Florestas. |
| |
11. | | JOSLIN, A.; MARKEWITZ, D.; MORRIS, L.; KATO, O. R.; FIGUEIREDO, R.; OLIVEIRA, F. de A. Crescimento de cinco espécies nativas em successão natural na Amazônia Oriental. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 8., 2011, Belém, PA. Anais... Belém, PA: SBSAF: Embrapa Amazônia Oriental: UFRA: CEPLAC: EMATER: ICRAF, 2011. 1 CD-ROM. Editores técnicos: Roberto Porro, Milton Kanashiro, Maria do Socorro Gonçalves Ferreira, Leila Sobral Sampaio e Gladys Ferreira de Sousa.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
| |
16. | | NEILL, C.; ELSENBEER, H.; KRUSCHE, A. V.; LEHMANN, J.; MARKEWITZ, D.; FIGUEIREDO, R. de O. Hydrological and biogeochemical processes in a changing Amazon: results from small watershed studies and the large-scale biosphere-atmosphere experiment. Hydrological Processes, v. 20, n. 12, p. 2467-2476, Aug. 2006.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
Biblioteca(s): Embrapa Amazônia Oriental. |
| |
Registros recuperados : 44 | |
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|