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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
25/06/2013 |
Data da última atualização: |
07/11/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MARKEWITZ, D.; FIGUEIREDO, R. de O.; CARVALHO, C. J. R. de; DAVIDSON, E. A. |
Afiliação: |
DANIEL MARKEWITZ, Warnell School of Forestry and Natural Resources, The University of Georgia; RICARDO DE OLIVEIRA FIGUEIREDO, CNPMA; CLAUDIO JOSE REIS DE CARVALHO, CPATU; ERIC A. DAVIDSON, The Woods Hole Research Center. |
Título: |
Soil and tree response to P fertilization in a secondary tropical forest supported by an Oxisol. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Biology and Fertility of Soils, v. 48, n. 6, p. 665-678, Aug. 2012. |
DOI: |
10.1007/s00374-011-0659-9 |
Idioma: |
Inglês |
Conteúdo: |
Abstract Mature tropical forests are considered to be P limited and to cycle P efficiently. Whether P limitations are significant in younger secondary tropical forests, how- ever, remains largely unexplored. This study evaluated P limitation by observing the P fertilizer response of a natu- rally regenerated 24-year-old forest and its soil. In February 1999, six 20×20-m plots were established in secondary forest in the Brazilian Amazon. After 1 year of pre- treatment tree measurements, 50 kg Pha-1 was applied in January 2000 and again in January 2001. Soil sorption of P was relatively low (~100 micrograms g-1) in the surface 0?20 cm while sorption increased to ~180 micrograms g-1 at 20?50 cm and approached ~500 micrograms g-1 for the 50- to 200-cm layers. Soil P in 0?10 cm, measured as sequentially extractable fractions (resin, HCO3-Pi, NaOH-Pi, NaOH-Po, and 1 M HCl), in- creased shortly after fertilization and could account for nearly all the 50 kg Pha-1 added at each date. During the following 6 years, soil P in fertilized plots declined in all pools other than resin P, and by June 2006, concentrations returned to pre-fertilization levels. Despite the increase in extractable P with fertilization, increased tree growth was not detected from stand age 25 to 31 years. It appears that during secondary forest succession at this site, the forest P cycle was conservative so as to maintain available P at a sufficient concentration to meet forest P demands. |
Palavras-Chave: |
Fracionamento de fósforo; Limitação de fósforo; Sorção de fósforo. |
Thesagro: |
Fertilidade do solo; Floresta secundária; Floresta tropical; Fósforo. |
Thesaurus Nal: |
Amazonia; phosphorus fertilizers; rain forests; secondary forests; soil fertility. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02448naa a2200313 a 4500 001 1960562 005 2022-11-07 008 2012 bl uuuu u00u1 u #d 024 7 $a10.1007/s00374-011-0659-9$2DOI 100 1 $aMARKEWITZ, D. 245 $aSoil and tree response to P fertilization in a secondary tropical forest supported by an Oxisol.$h[electronic resource] 260 $c2012 520 $aAbstract Mature tropical forests are considered to be P limited and to cycle P efficiently. Whether P limitations are significant in younger secondary tropical forests, how- ever, remains largely unexplored. This study evaluated P limitation by observing the P fertilizer response of a natu- rally regenerated 24-year-old forest and its soil. In February 1999, six 20×20-m plots were established in secondary forest in the Brazilian Amazon. After 1 year of pre- treatment tree measurements, 50 kg Pha-1 was applied in January 2000 and again in January 2001. Soil sorption of P was relatively low (~100 micrograms g-1) in the surface 0?20 cm while sorption increased to ~180 micrograms g-1 at 20?50 cm and approached ~500 micrograms g-1 for the 50- to 200-cm layers. Soil P in 0?10 cm, measured as sequentially extractable fractions (resin, HCO3-Pi, NaOH-Pi, NaOH-Po, and 1 M HCl), in- creased shortly after fertilization and could account for nearly all the 50 kg Pha-1 added at each date. During the following 6 years, soil P in fertilized plots declined in all pools other than resin P, and by June 2006, concentrations returned to pre-fertilization levels. Despite the increase in extractable P with fertilization, increased tree growth was not detected from stand age 25 to 31 years. It appears that during secondary forest succession at this site, the forest P cycle was conservative so as to maintain available P at a sufficient concentration to meet forest P demands. 650 $aAmazonia 650 $aphosphorus fertilizers 650 $arain forests 650 $asecondary forests 650 $asoil fertility 650 $aFertilidade do solo 650 $aFloresta secundária 650 $aFloresta tropical 650 $aFósforo 653 $aFracionamento de fósforo 653 $aLimitação de fósforo 653 $aSorção de fósforo 700 1 $aFIGUEIREDO, R. de O. 700 1 $aCARVALHO, C. J. R. de 700 1 $aDAVIDSON, E. A. 773 $tBiology and Fertility of Soils$gv. 48, n. 6, p. 665-678, Aug. 2012.
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Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
18/10/2006 |
Data da última atualização: |
19/04/2023 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
OMOTO, C.; FITT, G.; CAPRIO, M.; DENNEHY, T.; MAIA, A. de H. N.; WAQUIL, J. M.; RAMIRO, Z. A.; ANDOW, D. |
Afiliação: |
CELSO OMOTO, ESALQ; GARY FITT, Dept. of Entomology. CSIRO/ Australia; MICHAEL CAPRIO, Dept. of Entomology and Plant Pathology, MSU, Mississippi/MS/USA; TIMOTHY DENNEHY, Dept. of Entomology, University of Arizona, Tucson/USA; ALINE DE HOLANDA NUNES MAIA, CNPMA; JOSE MAGID WAQUIL, CNPMS; ZULEIDE ALVES RAMIRO, Instituto BiológiCO/Campinas/SP; DAVID ANDOW, Department of Entomology, University of Minnesota, St Paul/USA. |
Título: |
Manejo da resistência de pragas a plantas geneticamente modificadas. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 20., 2004, Gramado. Resumos... Gramado: Sociedade Entomológica do Brasil, 2004. p. 146. |
Idioma: |
Português |
Palavras-Chave: |
Pragas; Resistência de pragas. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/162186/1/2004SP-10-Maia-Manejo-6565.pdf
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Marc: |
LEADER 00667nam a2200205 a 4500 001 1013849 005 2023-04-19 008 2004 bl uuuu u00u1 u #d 100 1 $aOMOTO, C. 245 $aManejo da resistência de pragas a plantas geneticamente modificadas.$h[electronic resource] 260 $aCONGRESSO BRASILEIRO DE ENTOMOLOGIA, 20., 2004, Gramado. Resumos... Gramado: Sociedade Entomológica do Brasil, 2004. p. 146.$c2004 653 $aPragas 653 $aResistência de pragas 700 1 $aFITT, G. 700 1 $aCAPRIO, M. 700 1 $aDENNEHY, T. 700 1 $aMAIA, A. de H. N. 700 1 $aWAQUIL, J. M. 700 1 $aRAMIRO, Z. A. 700 1 $aANDOW, D.
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