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142. | | ANDRADE, J. P. de; KATO, O. R.; ALMEIDA, R. H. C.; LOPES FILHO, W. R. L. O capital social nas relações sociais de agricultores parceiros dos projetos Tipitamba e Raízes da Terra, no Nordeste Paraense. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 17.; SEMINÁRIO DE PÓS-GRADUAÇÃO DA EMBRAPA AMAZÔNIA ORIENTAL, 1., 2013, Belém, PA. Anais. Belém, PA: Embrapa Amazônia Oriental, 2013. 1 CD-ROM. PIBIC 2013. Biblioteca(s): Embrapa Amazônia Oriental. |
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148. | | SARMENTO, C. M. B.; VEIGA, J. B.; RISCHKOWSKY, B.; KATO, O. R.; SIEGMUND-SCHULTZE, M. Caracterização e avaliação da pastagem do rebanho de agricultores familiares do nordeste paraense. Acta amazonica, Manaus, v. 40, n. 3, p. 415-424, set. 2010. Biblioteca(s): Embrapa Amazônia Oriental. |
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150. | | ARAGÃO, D. V.; CARVALHO, C. J. R. de; KATO, O. R.; MOURÃO JUNIOR, M. Comportamento de indicadores químicos do solo sob alternativas de recuperação da fertilidade do solo no Nordeste paraense. 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. Biblioteca(s): Embrapa Amazônia Oriental. |
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153. | | KATO, M. do S. A.; KATO, O. R.; DENICH, M.; VLEK, P. L. G. Disponibilidade de fósforo em sistema de mulch, no nordeste paraense. In: SEMINÁRIO SOBRE MANEJO DA VEGETAÇÃO SECUNDÁRIA PARA A SUSTENTABILIDADE DA AGRICULTURA FAMILIAR DA EMBRAPA AMAZÔNIA ORIENTAL, 1999, Belém, PA. Anais. Belém, PA: Embrapa Amazônia Oriental: CNPq, 2000. p. 116-119. (Embrapa Amazônia Oriental. Documentos, 69). Biblioteca(s): Embrapa Amazônia Oriental. |
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156. | | KATO, O. R.; KATO, M. do S. A.; DENICH, M.; FÖLSTER, H.; VLEK, P. L. G. Dinâmica de nutrientes na solução do solo em sistema de cultivo sem o uso do fogo no preparo de área no nordeste paraense. In: SEMINÁRIO SOBRE MANEJO DA VEGETAÇÃO SECUNDÁRIA PARA A SUSTENTABILIDADE DA AGRICULTURA FAMILIAR DA EMBRAPA AMAZÔNIA ORIENTAL, 1999, Belém, PA. Anais. Belém, PA: Embrapa Amazônia Oriental: CNPq, 2000. p. 112-115. (Embrapa Amazônia Oriental. Documentos, 69). Biblioteca(s): Embrapa Amazônia Oriental. |
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157. | | RENDEIRO, A. C. L.; KATO, O. R.; KATO, M. do S. A. Efeito da época de preparo de área sem queima, na abundância e diversidade da fauna do solo. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA FCAP, 11.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL (AVALIAÇÃO-2001), 5., 2001, Belém, PA. Resumos. Belém, PA: FCAP: Embrapa Amazônia Oriental, 2002. p. 92-94. Biblioteca(s): Embrapa Amazônia Oriental. |
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158. | | AUZIER, M. S.; KATO, O. R.; KATO, M. do S. A. Efeito a longo prazo do preparo de área sem queima na produtividade dos sistemas de produção. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFRA, 2.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL (AVALIAÇÃO-2004), 8., 2005, Belém, PA. Ciência e tecnologia com inclusão social: anais. Belém, PA: UFRA: Embrapa Amazônia Oriental, 2005. 1 CD-ROM. Biblioteca(s): Embrapa Amazônia Oriental. |
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160. | | KATO, O. R.; OLIVEIRA, E. de; SANTIAGO, A. D.; CORRÊA, H. Efeito de diferentes espécies de fungos micorrízicos vesículo-arbusculares no crescimento e nutrição da mandioca. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 25, n. 8, p. 1175-1181, ago. 1990. Biblioteca(s): Embrapa Amazônia Oriental. |
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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 |
Circulação/Nível: |
A - 2 |
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.
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