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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Semiárido. |
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Data corrente: |
08/05/2000 |
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Data da última atualização: |
24/04/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GUIMARAES FILHO, C.; SOARES, J. G. G. |
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Afiliação: |
CLOVIS GUIMARÃES FILH0, CPATSA; JOSÉ GIVALDO GÓES SOARES, CPATSA. |
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Título: |
Efeito do consorcio com ovinos na produtividade da mangueira irrigada. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Revista Brasileira de Fruticultura, Jaboticabal, v. 22, n. 1, p. 102-105, abr. 2000. |
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Idioma: |
Português |
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Conteúdo: |
O ensaio teve o objetivo de avaliar o pastejo de ovinos em pomar de mangueiras, irrigado por microaspersao, para a reducao dos custos do controle de ervas daninhas. Piquetes de cercas eletricas moveis foram rotacionalmente pastejados em um pomar de mangueiras Tommy Atkins, por dez ovelhas mesticas Morada Nova x Santa Ines, nao lactentes, por um periodo total de 117 dias: de novembro de 1997 a marco de 1999. Os tratamentos incluiram areas submetidas a zero (testemunha, sem animais), um, dois e tres periodos de pastejo, a intervalos medios de 42.5 dias. A ordem de preferencia observada na dieta dos animais foi: especies selecionadas do estrato herbaceo, folhas dos ramos inferiores da mangueira e, por fim, especies menos palataveis do estrato herbaceo. O controle de ervas daninhas foi eficiente, principalmente nos piquetes submetidos a tres e a dois periodos de pastejo, e o consumo das folhas de manga e de suas rebrotas, mesmo por tres vezes, nao afetou a produtividade da cultura (P>0,05). O ganho de peso dos ovinos vivos foi de 52 g/cabeca/dia. Nao foram observados danos ao sistema de irrigacao provocados pelos animais em pastejo. Comparado ao tratamento testemunha, os piquetes submetidos a tres periodos de pastejo proporcionaram, durante o periodo experimental, uma economia de duas aplicacoes de herbicidas, quatro rocagens mecanicas e duas capinas manuais. |
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Palavras-Chave: |
Consorciacao; ERva daninh; Fruit tree; Fruteira; Ovinos. |
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Thesagro: |
Erva Daninha; Irrigação; Manga; Ovino. |
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Thesaurus Nal: |
intercropping; irrigation; sheep; weeds. |
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Categoria do assunto: |
--
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/175884/1/Revista-Brasileira-De-Fruticultura-Jaboticabalv.22n.1p.102-105.pdf
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Marc: |
LEADER 02130naa a2200289 a 4500
001 1133971
005 2018-04-24
008 2000 bl uuuu u00u1 u #d
100 1 $aGUIMARAES FILHO, C.
245 $aEfeito do consorcio com ovinos na produtividade da mangueira irrigada.
260 $c2000
520 $aO ensaio teve o objetivo de avaliar o pastejo de ovinos em pomar de mangueiras, irrigado por microaspersao, para a reducao dos custos do controle de ervas daninhas. Piquetes de cercas eletricas moveis foram rotacionalmente pastejados em um pomar de mangueiras Tommy Atkins, por dez ovelhas mesticas Morada Nova x Santa Ines, nao lactentes, por um periodo total de 117 dias: de novembro de 1997 a marco de 1999. Os tratamentos incluiram areas submetidas a zero (testemunha, sem animais), um, dois e tres periodos de pastejo, a intervalos medios de 42.5 dias. A ordem de preferencia observada na dieta dos animais foi: especies selecionadas do estrato herbaceo, folhas dos ramos inferiores da mangueira e, por fim, especies menos palataveis do estrato herbaceo. O controle de ervas daninhas foi eficiente, principalmente nos piquetes submetidos a tres e a dois periodos de pastejo, e o consumo das folhas de manga e de suas rebrotas, mesmo por tres vezes, nao afetou a produtividade da cultura (P>0,05). O ganho de peso dos ovinos vivos foi de 52 g/cabeca/dia. Nao foram observados danos ao sistema de irrigacao provocados pelos animais em pastejo. Comparado ao tratamento testemunha, os piquetes submetidos a tres periodos de pastejo proporcionaram, durante o periodo experimental, uma economia de duas aplicacoes de herbicidas, quatro rocagens mecanicas e duas capinas manuais.
650 $aintercropping
650 $airrigation
650 $asheep
650 $aweeds
650 $aErva Daninha
650 $aIrrigação
650 $aManga
650 $aOvino
653 $aConsorciacao
653 $aERva daninh
653 $aFruit tree
653 $aFruteira
653 $aOvinos
700 1 $aSOARES, J. G. G.
773 $tRevista Brasileira de Fruticultura, Jaboticabal$gv. 22, n. 1, p. 102-105, abr. 2000.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/03/2022 |
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Data da última atualização: |
09/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
RAMALHO, B.; DIECKOW, J.; MELO, V. de F.; BROWN, G. G.; SIMON, P. L.; IBARR, M. A.; CUNHA, L.; KILLE, P.; TPI NETWORK. |
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Afiliação: |
BRUNA RAMALHO, UFPR; JEFERSON DIECKOW, UFPR; VANDER DE FREITAS MELO, UFPR; GEORGE GARDNER BROWN, CNPF; PRISCILA LUZIA SIMON, UFPR; MARIANA ALVES IBARR, UFPR; LUIS CUNHA, University of Coimbra; PETER KILLE, Cardiff University; TPI NETWORK, Cardiff University. |
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Título: |
Carbon and nitrogen storage and stability by mineral-organic association in physical fractions of anthropogenic dark earth and of reference soils in Amazonia. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Catena, v. 213, 106185, June 2022. 10 p. |
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DOI: |
https://doi.org/10.1016/j.catena.2022.106185 |
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Idioma: |
Inglês |
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Conteúdo: |
The anthropogenic dark earths (ADEs) are being assumed in recent years as a model representing the result of sustainable soil management practices carried out by Pre-Columbian peoples. However, little is known about the role of mineral-organic associations in organic matter storage in those soils compared to the emphasis generally given to the role of pyrogenic structures. We quantified the changes of carbon and nitrogen and their distribution in physical fractions of ADEs in relation to the reference (adjacent) soil. Four ADEs sites having the different soil textural classes of sandy clay loam, sandy clay, clayey, and very clayey were selected in the Amazon region of Brazil. Soil samples were collected from the 0?10 cm layer and a subset of the sample was separated into large aggregates (>500 micrômetro) and small aggregates (<500 micrômetro). The ADEs stored on average 45% more total organic carbon (TOC) and 44% more total nitrogen (TN) than the reference soils. Of the incremental TOC and TN in ADE relative to the reference soil, the silt size fraction stored on average 92% of this TOC and 37% of this TN and had C:N ratios as high as 25, which may indicate the presence of pyrogenic material. The clay fraction stored a substantial share of 27-46% of the incremental TOC and 27-66% of the incremental TN. The C:N ratio in the clay size fraction of ADEs, on average 10.5, was lower or not different than in the clay fraction of reference soil (average of 11.1), indicating that the organic matter in the clay fraction even of ADEs was predominantly of microbial origin, and not pyrogenic. We therefore conclude that the clay fraction proved to be an important location to the accumulation and stabilization of TOC and TN in these Anthrosols, possibly by mineral-organic association mechanisms. MenosThe anthropogenic dark earths (ADEs) are being assumed in recent years as a model representing the result of sustainable soil management practices carried out by Pre-Columbian peoples. However, little is known about the role of mineral-organic associations in organic matter storage in those soils compared to the emphasis generally given to the role of pyrogenic structures. We quantified the changes of carbon and nitrogen and their distribution in physical fractions of ADEs in relation to the reference (adjacent) soil. Four ADEs sites having the different soil textural classes of sandy clay loam, sandy clay, clayey, and very clayey were selected in the Amazon region of Brazil. Soil samples were collected from the 0?10 cm layer and a subset of the sample was separated into large aggregates (>500 micrômetro) and small aggregates (<500 micrômetro). The ADEs stored on average 45% more total organic carbon (TOC) and 44% more total nitrogen (TN) than the reference soils. Of the incremental TOC and TN in ADE relative to the reference soil, the silt size fraction stored on average 92% of this TOC and 37% of this TN and had C:N ratios as high as 25, which may indicate the presence of pyrogenic material. The clay fraction stored a substantial share of 27-46% of the incremental TOC and 27-66% of the incremental TN. The C:N ratio in the clay size fraction of ADEs, on average 10.5, was lower or not different than in the clay fraction of reference soil (average of 11.1), indicating that th... Mostrar Tudo |
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Palavras-Chave: |
Physical fractionation; Protection mechanisms. |
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Thesaurus NAL: |
Anthrosols; Clay fraction; Organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02718naa a2200289 a 4500
001 2140681
005 2022-03-09
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.catena.2022.106185$2DOI
100 1 $aRAMALHO, B.
245 $aCarbon and nitrogen storage and stability by mineral-organic association in physical fractions of anthropogenic dark earth and of reference soils in Amazonia.$h[electronic resource]
260 $c2022
520 $aThe anthropogenic dark earths (ADEs) are being assumed in recent years as a model representing the result of sustainable soil management practices carried out by Pre-Columbian peoples. However, little is known about the role of mineral-organic associations in organic matter storage in those soils compared to the emphasis generally given to the role of pyrogenic structures. We quantified the changes of carbon and nitrogen and their distribution in physical fractions of ADEs in relation to the reference (adjacent) soil. Four ADEs sites having the different soil textural classes of sandy clay loam, sandy clay, clayey, and very clayey were selected in the Amazon region of Brazil. Soil samples were collected from the 0?10 cm layer and a subset of the sample was separated into large aggregates (>500 micrômetro) and small aggregates (<500 micrômetro). The ADEs stored on average 45% more total organic carbon (TOC) and 44% more total nitrogen (TN) than the reference soils. Of the incremental TOC and TN in ADE relative to the reference soil, the silt size fraction stored on average 92% of this TOC and 37% of this TN and had C:N ratios as high as 25, which may indicate the presence of pyrogenic material. The clay fraction stored a substantial share of 27-46% of the incremental TOC and 27-66% of the incremental TN. The C:N ratio in the clay size fraction of ADEs, on average 10.5, was lower or not different than in the clay fraction of reference soil (average of 11.1), indicating that the organic matter in the clay fraction even of ADEs was predominantly of microbial origin, and not pyrogenic. We therefore conclude that the clay fraction proved to be an important location to the accumulation and stabilization of TOC and TN in these Anthrosols, possibly by mineral-organic association mechanisms.
650 $aAnthrosols
650 $aClay fraction
650 $aOrganic matter
653 $aPhysical fractionation
653 $aProtection mechanisms
700 1 $aDIECKOW, J.
700 1 $aMELO, V. de F.
700 1 $aBROWN, G. G.
700 1 $aSIMON, P. L.
700 1 $aIBARR, M. A.
700 1 $aCUNHA, L.
700 1 $aKILLE, P.
700 1 $aTPI NETWORK
773 $tCatena$gv. 213, 106185, June 2022. 10 p.
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