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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
11/10/2006 |
Data da última atualização: |
11/10/2006 |
Autoria: |
SCHOMBERG, H. H.; ENDALE, D. M.; CALEGARI, A.; PEIXOTO, R. T. dos G.; MIYAZAWA, M.; CABRERA, M. L. |
Título: |
Influence of cover crops on potential nitrogen availability to succeeding crops in a southern Piedmont soil. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
Biology and Fertility of Soils, Boca Raton, v. 42, n. 4, p. 299-307, mar. 2006. |
Idioma: |
Inglês |
Conteúdo: |
Winter cover crops are essential in conservation tillage systems to protect soils from erosion and for improving soil productivity. Black oat (Avena strigosa Schereb) and oliseed radish ( Raphanus sativus L.) could be useful cover crops in the southeastern USA, but successful adoption requires understanding their unfluence on N availability in conservation tillage systems. Black oat and oilseed radish were compared to crimson clover (trifolium incarnatum L.) and rye ( Secale cereale L.) for biomass production and effects on N mineralization during the summer crop growing season from fall 1998 through summer 2002 near Watkinville, GA. Rye produced 40 to 60% more biomass, although N contents were less than the other cover crops. Oilseed radish and black oat N contents were similar to crimson clover. Black oat, oilseed radish, and crimson clover C/N ratios were less than 30. Where as rye averaged 39. Amount of N mineralized in 90 days (Nmin90) measured with in situ soil cores was 1.3 to 2.2 times greater following black oat , crimson clover, and oilseed radish than following rye. No differences in N min 90 were found between black oats, crimson clover, and oilseed radish in 1999 and 2000. The amount of potentially mineralizable N (N0) was not different due to cover crop, but was 1.5 time greater in 2000 and 2002 than in 1999. The rate of N mineralization (k) was 20 to 50% slower following rye than the other three cover crops. Black oat and oilseed radish biomass production and soil N mineralization dynamics were more similar to crimson clover than to rye, which indicates than they could be used as cover crops in the southeast without significant changes in N recommendations for most crops. MenosWinter cover crops are essential in conservation tillage systems to protect soils from erosion and for improving soil productivity. Black oat (Avena strigosa Schereb) and oliseed radish ( Raphanus sativus L.) could be useful cover crops in the southeastern USA, but successful adoption requires understanding their unfluence on N availability in conservation tillage systems. Black oat and oilseed radish were compared to crimson clover (trifolium incarnatum L.) and rye ( Secale cereale L.) for biomass production and effects on N mineralization during the summer crop growing season from fall 1998 through summer 2002 near Watkinville, GA. Rye produced 40 to 60% more biomass, although N contents were less than the other cover crops. Oilseed radish and black oat N contents were similar to crimson clover. Black oat, oilseed radish, and crimson clover C/N ratios were less than 30. Where as rye averaged 39. Amount of N mineralized in 90 days (Nmin90) measured with in situ soil cores was 1.3 to 2.2 times greater following black oat , crimson clover, and oilseed radish than following rye. No differences in N min 90 were found between black oats, crimson clover, and oilseed radish in 1999 and 2000. The amount of potentially mineralizable N (N0) was not different due to cover crop, but was 1.5 time greater in 2000 and 2002 than in 1999. The rate of N mineralization (k) was 20 to 50% slower following rye than the other three cover crops. Black oat and oilseed radish biomass production an... Mostrar Tudo |
Palavras-Chave: |
N. |
Thesagro: |
Nitrogênio; Solo. |
Thesaurus Nal: |
nitrogen; soil. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02401naa a2200241 a 4500 001 1628949 005 2006-10-11 008 2006 bl --- 0-- u #d 100 1 $aSCHOMBERG, H. H. 245 $aInfluence of cover crops on potential nitrogen availability to succeeding crops in a southern Piedmont soil. 260 $c2006 520 $aWinter cover crops are essential in conservation tillage systems to protect soils from erosion and for improving soil productivity. Black oat (Avena strigosa Schereb) and oliseed radish ( Raphanus sativus L.) could be useful cover crops in the southeastern USA, but successful adoption requires understanding their unfluence on N availability in conservation tillage systems. Black oat and oilseed radish were compared to crimson clover (trifolium incarnatum L.) and rye ( Secale cereale L.) for biomass production and effects on N mineralization during the summer crop growing season from fall 1998 through summer 2002 near Watkinville, GA. Rye produced 40 to 60% more biomass, although N contents were less than the other cover crops. Oilseed radish and black oat N contents were similar to crimson clover. Black oat, oilseed radish, and crimson clover C/N ratios were less than 30. Where as rye averaged 39. Amount of N mineralized in 90 days (Nmin90) measured with in situ soil cores was 1.3 to 2.2 times greater following black oat , crimson clover, and oilseed radish than following rye. No differences in N min 90 were found between black oats, crimson clover, and oilseed radish in 1999 and 2000. The amount of potentially mineralizable N (N0) was not different due to cover crop, but was 1.5 time greater in 2000 and 2002 than in 1999. The rate of N mineralization (k) was 20 to 50% slower following rye than the other three cover crops. Black oat and oilseed radish biomass production and soil N mineralization dynamics were more similar to crimson clover than to rye, which indicates than they could be used as cover crops in the southeast without significant changes in N recommendations for most crops. 650 $anitrogen 650 $asoil 650 $aNitrogênio 650 $aSolo 653 $aN 700 1 $aENDALE, D. M. 700 1 $aCALEGARI, A. 700 1 $aPEIXOTO, R. T. dos G. 700 1 $aMIYAZAWA, M. 700 1 $aCABRERA, M. L. 773 $tBiology and Fertility of Soils, Boca Raton$gv. 42, n. 4, p. 299-307, mar. 2006.
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Embrapa Agrobiologia (CNPAB) |
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Registro Completo
Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
Data corrente: |
04/03/2016 |
Data da última atualização: |
04/03/2016 |
Tipo da produção científica: |
Documentos |
Autoria: |
SILVA, A. P. da; LIMA, A. F.; LUNDSTEDT, L. M. |
Afiliação: |
ADRIANO PRYSTHON DA SILVA, CNPASA; ADRIANA FERREIRA LIMA, CNPASA; LICIA MARIA LUNDSTEDT, CNPASA. |
Título: |
A pesca e a aquicultura de surubins no Brasil: panorama e considerações para a sustentabilidade. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Palmas: Embrapa Pesca e Aquicultura, 2015. |
Páginas: |
42 p. |
Série: |
(Embrapa Pesca e Aquicultura. Documentos, 21). |
ISSN: |
2318-1400 |
Idioma: |
Português |
Conteúdo: |
Introdução. A pesca. A aquicultura. Sistemas de produção. Ração. Manejo alimentar. Qualidade de água. Abate e processamento. Comportamento em cativeiro. Impactos ambientais da produção de surubins em cativeiro. Considerações finais. Referencias. |
Palavras-Chave: |
Manejo alimentar. |
Thesagro: |
Híbrido; Peixe de água doce; Piscicultura; Ração; Surubim. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/140642/1/CNPASA-2015-dc21.pdf
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Marc: |
LEADER 00966nam a2200241 a 4500 001 2039656 005 2016-03-04 008 2015 bl uuuu u0uu1 u #d 022 $a2318-1400 100 1 $aSILVA, A. P. da 245 $aA pesca e a aquicultura de surubins no Brasil$bpanorama e considerações para a sustentabilidade.$h[electronic resource] 260 $aPalmas: Embrapa Pesca e Aquicultura$c2015 300 $a42 p. 490 $a(Embrapa Pesca e Aquicultura. Documentos, 21). 520 $aIntrodução. A pesca. A aquicultura. Sistemas de produção. Ração. Manejo alimentar. Qualidade de água. Abate e processamento. Comportamento em cativeiro. Impactos ambientais da produção de surubins em cativeiro. Considerações finais. Referencias. 650 $aHíbrido 650 $aPeixe de água doce 650 $aPiscicultura 650 $aRação 650 $aSurubim 653 $aManejo alimentar 700 1 $aLIMA, A. F. 700 1 $aLUNDSTEDT, L. M.
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