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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Agropecuária Oeste; Embrapa Amapá; Embrapa Amazônia Oriental; Embrapa Arroz e Feijão; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Meio-Norte; Embrapa Semiárido; Embrapa Unidades Centrais. |
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Data corrente: |
20/05/2002 |
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Data da última atualização: |
09/05/2012 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
PRABHU, A. S.; GUIMARÃES, C. M.; BERNI, R. F. |
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Afiliação: |
ANNE SITARAMA PRABHU, CNPAF; CLEBER MORAIS GUIMARAES, CNPAF; RODRIGO FASCIN BERNI. |
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Título: |
Influência da época de plantio no controle da brusone em folhas de arroz de terras altas. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2001. |
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Páginas: |
2 p. |
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Série: |
(Embrapa Arroz e Feijão. Pesquisa em foco, 56). |
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Idioma: |
Português |
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Conteúdo: |
O presente trabalho objetivou estudar a influencia da época de plantio, da cultivar e do tratamento de sementes sobre a severidade da brusone nas folhas das novas cultivares de terras altas, melhoradas para alta qualidade de grãos. |
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Palavras-Chave: |
Arroz de terras altas; Control; Controle; Controle de doença; Disease; Epoca; Oriza sativa; Terra Alta; Terras Altas; Terras altas: Brusone; Upland rice. |
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Thesagro: |
Arroz; Brusone; Doença; Doença de Planta; Época de Plantio; Fungo; Glycine Max; Oryza Sativa; Plantio; Pyricularia Grisea; Rotação de Cultura; Soja; Variedade. |
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Thesaurus Nal: |
rice. |
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Categoria do assunto: |
--
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/59066/1/Foco-56.pdf
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Marc: |
LEADER 01432nam a2200457 a 4500
001 1209835
005 2012-05-09
008 2001 bl uuuu u0uu1 u #d
100 1 $aPRABHU, A. S.
245 $aInfluência da época de plantio no controle da brusone em folhas de arroz de terras altas.
260 $aSanto Antônio de Goiás: Embrapa Arroz e Feijão$c2001
300 $a2 p.
490 $a(Embrapa Arroz e Feijão. Pesquisa em foco, 56).
520 $aO presente trabalho objetivou estudar a influencia da época de plantio, da cultivar e do tratamento de sementes sobre a severidade da brusone nas folhas das novas cultivares de terras altas, melhoradas para alta qualidade de grãos.
650 $arice
650 $aArroz
650 $aBrusone
650 $aDoença
650 $aDoença de Planta
650 $aÉpoca de Plantio
650 $aFungo
650 $aGlycine Max
650 $aOryza Sativa
650 $aPlantio
650 $aPyricularia Grisea
650 $aRotação de Cultura
650 $aSoja
650 $aVariedade
653 $aArroz de terras altas
653 $aControl
653 $aControle
653 $aControle de doença
653 $aDisease
653 $aEpoca
653 $aOriza sativa
653 $aTerra Alta
653 $aTerras Altas
653 $aTerras altas: Brusone
653 $aUpland rice
700 1 $aGUIMARÃES, C. M.
700 1 $aBERNI, R. F.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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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: |
22/09/2008 |
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Data da última atualização: |
22/09/2008 |
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Autoria: |
HEDDE, M.; BUREAU, F.; CECILLON, L.; DECAENS, T. |
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Título: |
Effects of five earthworm species on soil structure and organic matter in LUVISOLs. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
Earthworms are frequently cited as key stone soil organisms, however, their effects on soil
structure stability and organic matter (OM) in macro-aggregates are mainly driven by soil type
and land use. Loamy soils of the Bassin Parisien are mainly dedicated to intensive crop which
have led to soil degradation. Introduction of pastures is one of the most promising practices that
may restore them. The aim of this work is to quantify and compare, in laboratory experiments,
the effects of 5 earthworm species on soil OM. We hypothesize that direction and magnitude of
earthworm effects depend on (i) earthworm species and (ii) OM of the substrate hosting it.
Five earthworm species were retained for the experiment (Aporrectodea caliginosa,
Aporrectodea rosea, Allolobophora chlorotica, Aporrectodea icterica and Aporrectodea longa).
The superficial soil of 3 stands were sampled in May 2006: a 30 yrs intensive crop stand (CS);
a 5 yrs pasture (YP); a 46 yrs permanent pasture (PP). Soil (150 g of 2mm-sieved) was added
to microcosms and moistened at field capacity at the onset of the experiment. Three replicates
were set up for each treatment (species x substrate) and stored for 3 weeks in climate chambers.
C-CO2 release during the experiment was estimated by the conductivity method (Heemsbergen
et al., 2004). At the end of the experiment, soil was air-dried and dry-sieved at 2 mm to isolate
and weight the large macro-aggregate fraction (> 2mm, LMA). LMA were characterized by (i)
their organic matter content (loss-in-ignition at 550 °C); (ii) their stability estimated by the more
desegregating test of Le Bissonnais? (1996) method and expressed as the mean weight diameter
(MWD) and (iii) their organic composition assessed by Near Infrared Spectroscopy (NIRS, Antaris
II Thermo electron).
The C-CO2 release may result from quality or localisation of soil OM. The high C-CO2 release
observed in CS-microcosms hosting earthworm can be explained by the mineralization of a
labile OM pool. This hypothesis was confirmed by the decrease of OM content in LMA. On the
other hand, in pasture soils, the lack of C-CO2 release increase in earthworm presence may be
due to a physical or chemical protection of OM.
Globally the rate of LMA production decreased with soil OM content increase. On low OM content
soil, earthworms should ingest a larger amount of soil than on high OM content soil to cover the
energetic needs.
Aggregate structural stability produced in earthworms hosting microcosms was lower (CS soil),
similar (YP soil) and higher (PP soil) than in animal-free controls. Although the factor ?species?
mattered, short-term stabilisation mechanisms in those loamy soils were firstly linked to the
initial soil OM content.
Interpretation of NIRS spectra showed that the regular disturbance regime YP was submitted to
might have maintained OM biochemical composition similar to CS one and that the composition
of soil OM influence the capacities of earthworms to modify this OM composition.
Biodiversity, Conservation and
Sustainable Management of Soil Animals
August 25 - 29, 2008
Positivo University
Curitiba - Paraná - Brazil
We demonstrated that earthworm short-term effects depend on both earthworm species and
initial soil OM. These effects are complex and appear mainly in the more contrasted soils.
Conversely, in the 5-years old pasture soil, earthworm presence has very few effects. MenosEarthworms are frequently cited as key stone soil organisms, however, their effects on soil
structure stability and organic matter (OM) in macro-aggregates are mainly driven by soil type
and land use. Loamy soils of the Bassin Parisien are mainly dedicated to intensive crop which
have led to soil degradation. Introduction of pastures is one of the most promising practices that
may restore them. The aim of this work is to quantify and compare, in laboratory experiments,
the effects of 5 earthworm species on soil OM. We hypothesize that direction and magnitude of
earthworm effects depend on (i) earthworm species and (ii) OM of the substrate hosting it.
Five earthworm species were retained for the experiment (Aporrectodea caliginosa,
Aporrectodea rosea, Allolobophora chlorotica, Aporrectodea icterica and Aporrectodea longa).
The superficial soil of 3 stands were sampled in May 2006: a 30 yrs intensive crop stand (CS);
a 5 yrs pasture (YP); a 46 yrs permanent pasture (PP). Soil (150 g of 2mm-sieved) was added
to microcosms and moistened at field capacity at the onset of the experiment. Three replicates
were set up for each treatment (species x substrate) and stored for 3 weeks in climate chambers.
C-CO2 release during the experiment was estimated by the conductivity method (Heemsbergen
et al., 2004). At the end of the experiment, soil was air-dried and dry-sieved at 2 mm to isolate
and weight the large macro-aggregate fraction (> 2mm, LMA). LMA were characterized by (i)
their or... Mostrar Tudo |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 04113naa a2200157 a 4500
001 1314907
005 2008-09-22
008 2008 bl uuuu u00u1 u #d
100 1 $aHEDDE, M.
245 $aEffects of five earthworm species on soil structure and organic matter in LUVISOLs.
260 $c2008
520 $aEarthworms are frequently cited as key stone soil organisms, however, their effects on soil structure stability and organic matter (OM) in macro-aggregates are mainly driven by soil type and land use. Loamy soils of the Bassin Parisien are mainly dedicated to intensive crop which have led to soil degradation. Introduction of pastures is one of the most promising practices that may restore them. The aim of this work is to quantify and compare, in laboratory experiments, the effects of 5 earthworm species on soil OM. We hypothesize that direction and magnitude of earthworm effects depend on (i) earthworm species and (ii) OM of the substrate hosting it. Five earthworm species were retained for the experiment (Aporrectodea caliginosa, Aporrectodea rosea, Allolobophora chlorotica, Aporrectodea icterica and Aporrectodea longa). The superficial soil of 3 stands were sampled in May 2006: a 30 yrs intensive crop stand (CS); a 5 yrs pasture (YP); a 46 yrs permanent pasture (PP). Soil (150 g of 2mm-sieved) was added to microcosms and moistened at field capacity at the onset of the experiment. Three replicates were set up for each treatment (species x substrate) and stored for 3 weeks in climate chambers. C-CO2 release during the experiment was estimated by the conductivity method (Heemsbergen et al., 2004). At the end of the experiment, soil was air-dried and dry-sieved at 2 mm to isolate and weight the large macro-aggregate fraction (> 2mm, LMA). LMA were characterized by (i) their organic matter content (loss-in-ignition at 550 °C); (ii) their stability estimated by the more desegregating test of Le Bissonnais? (1996) method and expressed as the mean weight diameter (MWD) and (iii) their organic composition assessed by Near Infrared Spectroscopy (NIRS, Antaris II Thermo electron). The C-CO2 release may result from quality or localisation of soil OM. The high C-CO2 release observed in CS-microcosms hosting earthworm can be explained by the mineralization of a labile OM pool. This hypothesis was confirmed by the decrease of OM content in LMA. On the other hand, in pasture soils, the lack of C-CO2 release increase in earthworm presence may be due to a physical or chemical protection of OM. Globally the rate of LMA production decreased with soil OM content increase. On low OM content soil, earthworms should ingest a larger amount of soil than on high OM content soil to cover the energetic needs. Aggregate structural stability produced in earthworms hosting microcosms was lower (CS soil), similar (YP soil) and higher (PP soil) than in animal-free controls. Although the factor ?species? mattered, short-term stabilisation mechanisms in those loamy soils were firstly linked to the initial soil OM content. Interpretation of NIRS spectra showed that the regular disturbance regime YP was submitted to might have maintained OM biochemical composition similar to CS one and that the composition of soil OM influence the capacities of earthworms to modify this OM composition. Biodiversity, Conservation and Sustainable Management of Soil Animals August 25 - 29, 2008 Positivo University Curitiba - Paraná - Brazil We demonstrated that earthworm short-term effects depend on both earthworm species and initial soil OM. These effects are complex and appear mainly in the more contrasted soils. Conversely, in the 5-years old pasture soil, earthworm presence has very few effects.
700 1 $aBUREAU, F.
700 1 $aCECILLON, L.
700 1 $aDECAENS, T.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
Download
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Embrapa Florestas (CNPF) |
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