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| 2. |  | NASCIMENTO, E. C.; BETTA, M.; MATOS, T. S.; MENEZES, C. C.; BALIERO, F. C.; DONAGEMMA, G. K.; POLIDORO, José Carlos; NAUMOV, A.; BENITES, V. de M. Aplicação de potássio antecipada sobre diferentes plantas de cobertura de solo para a adubação da soja em sistema de plantio direto. CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 31., 2007, Gramado. Resumo| Biblioteca(s): Embrapa Solos. |
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| 3. | | ALCANTARA, S. de; PEREZ, D. V.; SILVA, G. H. da; ALMEIDA, M. R. A. de; FEITOSA, F. P.; JORGE, G. de S. A.; POLIDORO, José Carlos. Variación Temporal del Fraccionamento Químico de Zn, Cr, Mn y Cu em un Oxisol Brasileño tratado com diferentes tipos dosis de lodo de las aguas negras. In: CONGRESO DE GESTIÓN AMBIENTAL - VI CONVENCIÓN INTERNACIONAL SOBRE MEDIO AMBIENTE Y DESARROLLO, 3., 2007, Havana. Resumo| Biblioteca(s): Embrapa Solos. |
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| Registros recuperados : 3 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
14/03/2011 |
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Data da última atualização: |
11/11/2022 |
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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. H.; MARKEWITZ, D.; MORRIS, L. A.; OLIVEIRA, F. de A.; FIGUEIREDO, R. de O.; KATO, O. R. |
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Afiliação: |
ARON H. JOSLIN, Warnell School of Forest and Natural Resources; DANIEL MARKEWITZ, Warnell School of Forest and Natural Resources; LAWRENCE A. MORRIS, Warnell School of Forest and Natural Resources; FRANCISCO DE ASSIS OLIVEIRA, UFRA; RICARDO DE OLIVEIRA FIGUEIREDO, CPATU; OSVALDO RYOHEI KATO, CPATU. |
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Título: |
Five native tree species and manioc under slash-and-mulch agroforestry in the eastern Amazon of Brazil: plant growth and soil responses. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Agroforestry Systems, v. 81, n. 1, p. 1-14, 2011. |
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DOI: |
10.1007/s10457-010-9356-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Throughout the Amazon of Brazil, manioc (Manihot esculenta) is a staple crop produced through slash-and-burn agriculture. Nutrient losses during slash-and-burn can be large and nutrient demand by food crops so great that ?elds are often abandoned after two years. In recent decades, farmers have reduced the fallow phase from 20 to *5 years, limiting plant nutrient accumulation to sustain crop yields. Improved fallows through simultaneous planting of trees with food crops may accelerate nutrient re-accumulation. In addition, slash-and-mulch technology may prevent loss of nutrients due to burning and mulch decomposition may serve as a slow-release source of nutrients. This study in Para´, Brazil, in a 7-year-old secondary forest following slashing and mulching of the vegetation, involved two main plot treatments (with and without P and K fertilizers) and two sub-plot treatments (with or without a N2-?xer Inga edulis). A mixed-culture of trees and manioc was planted in all plots. P and K fertilizer increased tree mortality due to weed competition but growth of surviving trees in four of the ?ve tree species tested also increased as did biomass production of manioc. In the N2-?xer treatment trends of greater growth and survival of four of ?ve tree species and manioc biomass were also observed. Fertilization increased the biomass of competing vegetation, but there was a fertilizer by N2 -?xer interaction as I. edulis caused a reduction in competing biomass in the fertilized treatment. After one year, fertilization increased decomposition of the mulch such that Ca, Mg, and N contents within the mulch all decreased. In contrast, P and K contents of mulch increased in all treatments. No in?uence of the N2 -?xer on 0?10 cm soil N contents was observed. Two years after establishment, this agroforestry system succeeded in growing a manioc crop and leaving a well-maintained tree fallow after the crop harvest. MenosThroughout the Amazon of Brazil, manioc (Manihot esculenta) is a staple crop produced through slash-and-burn agriculture. Nutrient losses during slash-and-burn can be large and nutrient demand by food crops so great that ?elds are often abandoned after two years. In recent decades, farmers have reduced the fallow phase from 20 to *5 years, limiting plant nutrient accumulation to sustain crop yields. Improved fallows through simultaneous planting of trees with food crops may accelerate nutrient re-accumulation. In addition, slash-and-mulch technology may prevent loss of nutrients due to burning and mulch decomposition may serve as a slow-release source of nutrients. This study in Para´, Brazil, in a 7-year-old secondary forest following slashing and mulching of the vegetation, involved two main plot treatments (with and without P and K fertilizers) and two sub-plot treatments (with or without a N2-?xer Inga edulis). A mixed-culture of trees and manioc was planted in all plots. P and K fertilizer increased tree mortality due to weed competition but growth of surviving trees in four of the ?ve tree species tested also increased as did biomass production of manioc. In the N2-?xer treatment trends of greater growth and survival of four of ?ve tree species and manioc biomass were also observed. Fertilization increased the biomass of competing vegetation, but there was a fertilizer by N2 -?xer interaction as I. edulis caused a reduction in competing biomass in the fertilized treatm... Mostrar Tudo |
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Palavras-Chave: |
Manihot esculenta Crantz; Tipitamba. |
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Thesagro: |
Mandioca. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/29460/1/five-native-tree.pdf
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Marc: |
LEADER 02661naa a2200229 a 4500
001 1880672
005 2022-11-11
008 2011 bl uuuu u00u1 u #d
024 7 $a10.1007/s10457-010-9356-1$2DOI
100 1 $aJOSLIN, A. H.
245 $aFive native tree species and manioc under slash-and-mulch agroforestry in the eastern Amazon of Brazil$bplant growth and soil responses.$h[electronic resource]
260 $c2011
520 $aThroughout the Amazon of Brazil, manioc (Manihot esculenta) is a staple crop produced through slash-and-burn agriculture. Nutrient losses during slash-and-burn can be large and nutrient demand by food crops so great that ?elds are often abandoned after two years. In recent decades, farmers have reduced the fallow phase from 20 to *5 years, limiting plant nutrient accumulation to sustain crop yields. Improved fallows through simultaneous planting of trees with food crops may accelerate nutrient re-accumulation. In addition, slash-and-mulch technology may prevent loss of nutrients due to burning and mulch decomposition may serve as a slow-release source of nutrients. This study in Para´, Brazil, in a 7-year-old secondary forest following slashing and mulching of the vegetation, involved two main plot treatments (with and without P and K fertilizers) and two sub-plot treatments (with or without a N2-?xer Inga edulis). A mixed-culture of trees and manioc was planted in all plots. P and K fertilizer increased tree mortality due to weed competition but growth of surviving trees in four of the ?ve tree species tested also increased as did biomass production of manioc. In the N2-?xer treatment trends of greater growth and survival of four of ?ve tree species and manioc biomass were also observed. Fertilization increased the biomass of competing vegetation, but there was a fertilizer by N2 -?xer interaction as I. edulis caused a reduction in competing biomass in the fertilized treatment. After one year, fertilization increased decomposition of the mulch such that Ca, Mg, and N contents within the mulch all decreased. In contrast, P and K contents of mulch increased in all treatments. No in?uence of the N2 -?xer on 0?10 cm soil N contents was observed. Two years after establishment, this agroforestry system succeeded in growing a manioc crop and leaving a well-maintained tree fallow after the crop harvest.
650 $aMandioca
653 $aManihot esculenta Crantz
653 $aTipitamba
700 1 $aMARKEWITZ, D.
700 1 $aMORRIS, L. A.
700 1 $aOLIVEIRA, F. de A.
700 1 $aFIGUEIREDO, R. de O.
700 1 $aKATO, O. R.
773 $tAgroforestry Systems$gv. 81, n. 1, p. 1-14, 2011.
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Embrapa Amazônia Oriental (CPATU) |
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