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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
22/10/2012 |
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Data da última atualização: |
10/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AGUIAR, M. I. de; MAIA, S. M. F.; XAVIER, F. A. da S.; MENDONÇA, E. de S.; ARAUJO FILHO, J. A. de; OLIVEIRA, T. S. de. |
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Afiliação: |
Maria Ivanilda de Aguiar, Federal University of Ceará (UFC), Fortaleza-CE.; Stoécio Malta Ferreira Maia, UFC - Fortaleza, CE.; Francisco Alisson da Silva Xavier, UFC - Fortaleza, CE.; Eduardo de Sá Mendonça, Federal University of Espírito Santo, Alegre-ES.; João Ambrósio de Araujo Filho, CNPC; Teógenes Senna de Oliveira, UFC - Fortaleza, CE. |
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Título: |
Sediment, nutrient and water losses by water erosion under agroforestry systems in the semi-arid region in northeastern Brazil. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Agroforest System, v. 79, n. 3, p. 277-289, Jul. 2010. |
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DOI: |
DOI 10.1007/s10457-010-9310-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Inadequate soil management practices adopted in the Brazilian semi-arid region contribute to erosive processes. Agroforestry systems (AFs) have been considered an alternative to reduce water erosion. This study aimed to evaluate the impact of two alternatives AFs, a traditional and an intensive cropping system on the losses of sediments, water, organic carbon and nutrients caused by water erosion in comparison to the natural vegetation (caatinga) in a semi-arid region of northeastern Brazil. The agroecosystems studied were: agrosilvopasture (AGP) which consisted of an alley cropping system, cultivated with Leucaena leucocephala and maize, within an area composed by 22% of native trees (200 native trees per hectare) which was grazed during the dry season; silvopasture (SILV) that was composed by 38% of native trees (260 trees per hectare) with a stocking rate of 20 ewes during whole year; traditional agrosilvopasture (TRAG) being managed as following: total deforestation, burning of the residues, cropped with maize for 2 years (1998 and 1999) and fallow during 8-10 years; and intensive cropping (IC) system which was deforested and burned in 1997 followed by cultivation of maize from 1998 to 2002, and thereafter by a fallow period of 8-10 years similar to TRAG. Two areas of native forest (NF1, NF2) known as "caatinga", used as grassland during the dry season and as a source of wood, were selected and used as reference of steady state in the comparative study in relation to the cultivated sites. Sediment and water losses as a result of erosion were collected during two rainy seasons, i.e. 2003 and 2004, and nutrients and organic carbon contents were determined. Soil samples were collected and organic carbon, pH in water, pH in KCl, water dispersible clay (WDC) and hydraulic conductivity (K0) were measured. In 2003, sediment and water losses did not differ significantly among all treatments. However, in 2004, TRAG (0.70 Mg ha-1) and NF1 (1.37 Mg ha-1) showed the highest sediment losses, whereas TRAG and IC presented the highest water losses. On average, nutrients losses in cropped areas were lower than in natural vegetation (NF1, NF2). The alternative AFs (AGP, SILV) were efficient to reduce water erosion effects when compared to the most common agricultural practices adopted in the region, being highly recommended as sustainable technical alternatives for food production in the region. MenosAbstract: Inadequate soil management practices adopted in the Brazilian semi-arid region contribute to erosive processes. Agroforestry systems (AFs) have been considered an alternative to reduce water erosion. This study aimed to evaluate the impact of two alternatives AFs, a traditional and an intensive cropping system on the losses of sediments, water, organic carbon and nutrients caused by water erosion in comparison to the natural vegetation (caatinga) in a semi-arid region of northeastern Brazil. The agroecosystems studied were: agrosilvopasture (AGP) which consisted of an alley cropping system, cultivated with Leucaena leucocephala and maize, within an area composed by 22% of native trees (200 native trees per hectare) which was grazed during the dry season; silvopasture (SILV) that was composed by 38% of native trees (260 trees per hectare) with a stocking rate of 20 ewes during whole year; traditional agrosilvopasture (TRAG) being managed as following: total deforestation, burning of the residues, cropped with maize for 2 years (1998 and 1999) and fallow during 8-10 years; and intensive cropping (IC) system which was deforested and burned in 1997 followed by cultivation of maize from 1998 to 2002, and thereafter by a fallow period of 8-10 years similar to TRAG. Two areas of native forest (NF1, NF2) known as "caatinga", used as grassland during the dry season and as a source of wood, were selected and used as reference of steady state in the comparative study in relat... Mostrar Tudo |
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Palavras-Chave: |
Agroecologia; Brasil; Ceará; Chuvas erosivas; Erosivity index; Family farming; Indice de erosividade; Maize; Perda de água; Perda de nutriente; Perda de solo; SAF's; Semi-Arid; Sistemas agroflorestais. |
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Thesagro: |
Caatinga; Erosão; Leucaena Leucocephala; Manejo do solo. |
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Thesaurus Nal: |
Agroecology; Brazil; Soil management. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03709naa a2200445 a 4500
001 1937341
005 2015-03-10
008 2010 bl uuuu u00u1 u #d
024 7 $aDOI 10.1007/s10457-010-9310-2$2DOI
100 1 $aAGUIAR, M. I. de
245 $aSediment, nutrient and water losses by water erosion under agroforestry systems in the semi-arid region in northeastern Brazil.$h[electronic resource]
260 $c2010
520 $aAbstract: Inadequate soil management practices adopted in the Brazilian semi-arid region contribute to erosive processes. Agroforestry systems (AFs) have been considered an alternative to reduce water erosion. This study aimed to evaluate the impact of two alternatives AFs, a traditional and an intensive cropping system on the losses of sediments, water, organic carbon and nutrients caused by water erosion in comparison to the natural vegetation (caatinga) in a semi-arid region of northeastern Brazil. The agroecosystems studied were: agrosilvopasture (AGP) which consisted of an alley cropping system, cultivated with Leucaena leucocephala and maize, within an area composed by 22% of native trees (200 native trees per hectare) which was grazed during the dry season; silvopasture (SILV) that was composed by 38% of native trees (260 trees per hectare) with a stocking rate of 20 ewes during whole year; traditional agrosilvopasture (TRAG) being managed as following: total deforestation, burning of the residues, cropped with maize for 2 years (1998 and 1999) and fallow during 8-10 years; and intensive cropping (IC) system which was deforested and burned in 1997 followed by cultivation of maize from 1998 to 2002, and thereafter by a fallow period of 8-10 years similar to TRAG. Two areas of native forest (NF1, NF2) known as "caatinga", used as grassland during the dry season and as a source of wood, were selected and used as reference of steady state in the comparative study in relation to the cultivated sites. Sediment and water losses as a result of erosion were collected during two rainy seasons, i.e. 2003 and 2004, and nutrients and organic carbon contents were determined. Soil samples were collected and organic carbon, pH in water, pH in KCl, water dispersible clay (WDC) and hydraulic conductivity (K0) were measured. In 2003, sediment and water losses did not differ significantly among all treatments. However, in 2004, TRAG (0.70 Mg ha-1) and NF1 (1.37 Mg ha-1) showed the highest sediment losses, whereas TRAG and IC presented the highest water losses. On average, nutrients losses in cropped areas were lower than in natural vegetation (NF1, NF2). The alternative AFs (AGP, SILV) were efficient to reduce water erosion effects when compared to the most common agricultural practices adopted in the region, being highly recommended as sustainable technical alternatives for food production in the region.
650 $aAgroecology
650 $aBrazil
650 $aSoil management
650 $aCaatinga
650 $aErosão
650 $aLeucaena Leucocephala
650 $aManejo do solo
653 $aAgroecologia
653 $aBrasil
653 $aCeará
653 $aChuvas erosivas
653 $aErosivity index
653 $aFamily farming
653 $aIndice de erosividade
653 $aMaize
653 $aPerda de água
653 $aPerda de nutriente
653 $aPerda de solo
653 $aSAF's
653 $aSemi-Arid
653 $aSistemas agroflorestais
700 1 $aMAIA, S. M. F.
700 1 $aXAVIER, F. A. da S.
700 1 $aMENDONÇA, E. de S.
700 1 $aARAUJO FILHO, J. A. de
700 1 $aOLIVEIRA, T. S. de
773 $tAgroforest System$gv. 79, n. 3, p. 277-289, Jul. 2010.
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Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
28/11/2016 |
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Data da última atualização: |
09/12/2016 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ANDREAZZA, F.; HADDI, K.; NAVA, D. E.; NÖRNBERG, S. D.; GUEDES, R. N. C.; OLIVEIRA, E. E. de. |
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Afiliação: |
Felipe Andreazza; Khalid Haddi; DORI EDSON NAVA, CPACT; Sandro D. Nörnberg; Raul N. C. Guedes; Eugênio E. de Oliveira. |
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Título: |
Behavioral and physiological responses of the parasitoid wasp Diachasmimorpha longicaudata (Hymenoptera: Braconidae) under exposure to spinosad insecticide |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 26.; CONGRESSO LATINO-AMERICANO DE ENTOMOLOGIA, 9., 2016, Maceió. Anais... Brasília, DF: Embrapa, 2016. |
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Idioma: |
Inglês |
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Palavras-Chave: |
Insect locomotion; Respiratory responses. |
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Thesaurus NAL: |
sublethal effects. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/150730/1/Anais-XXVICBE-IXCLE.pdf
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Marc: |
LEADER 00770nam a2200193 a 4500
001 2057324
005 2016-12-09
008 2016 bl uuuu u00u1 u #d
100 1 $aANDREAZZA, F.
245 $aBehavioral and physiological responses of the parasitoid wasp Diachasmimorpha longicaudata (Hymenoptera$bBraconidae) under exposure to spinosad insecticide$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 26.; CONGRESSO LATINO-AMERICANO DE ENTOMOLOGIA, 9., 2016, Maceió. Anais... Brasília, DF: Embrapa$c2016
650 $asublethal effects
653 $aInsect locomotion
653 $aRespiratory responses
700 1 $aHADDI, K.
700 1 $aNAVA, D. E.
700 1 $aNÖRNBERG, S. D.
700 1 $aGUEDES, R. N. C.
700 1 $aOLIVEIRA, E. E. de
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