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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
24/01/2006 |
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Data da última atualização: |
24/01/2006 |
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Autoria: |
SCHOMBERG, H. H.; ENDALE, D. M.; CALEGARI, A.; PEIXOTO, R. dos G. T.; MIYAZAWA, M.; CABRERA, M. L. |
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Título: |
Influence of cover crops on potential nitrogen availability to succeeding crops in a Southern Piedmont soil. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Biology and Fertility of Soils, Berlin, v. 42, n. 4, p. 299-307, mar. 2006. |
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Idioma: |
Inglês |
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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. Whereas 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. Whereas 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... Mostrar Tudo |
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Palavras-Chave: |
N. |
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Thesagro: |
Nitrogênio; Solo. |
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Thesaurus Nal: |
nitrogen; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02396naa a2200241 a 4500
001 1624859
005 2006-01-24
008 2005 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 $c2005
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. Whereas 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. dos G. T.
700 1 $aMIYAZAWA, M.
700 1 $aCABRERA, M. L.
773 $tBiology and Fertility of Soils, Berlin$gv. 42, n. 4, p. 299-307, mar. 2006.
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Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 356 | |
| 6. |  | ALMEIDA, A. M. R.; MIRANDA, L. C. Aspectos da ocorrência do mosaico comun da soja em sementes e sua transmissibilidade. Fitopatologia Brasileira, Brasilia, v. 3, n. 1, p. 74, fev. 1978. Resumo apresentado no XI Congresso da Sociedade Brasileira de Fitopatologia, 1978, Viçosa, MG.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 7. | | CAVARIANI, C.; GAZOLA, E.; MIRANDA, L. C. Desempenho de cultivares transgências de soja em sucessão a culturas de inverno em semeadura direta. In: CONGRESSO BRASILEIRO DE SOJA, 5.; MERCOSOJA 2009, Goiânia. Resumos... Londrina: Embrapa Soja, 2009. p. 232, trab. 425. Editado por Adilson de Oliveira Júnior, Odilon Ferreira Saraiva, Clara Beatriz Hoffmann Campo, César de Castro.| Biblioteca(s): Embrapa Soja. |
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| 10. | | SFREDO, G. J.; MIRANDA, L. C. Testaram-se oito linhagens BRAS de soja, tolerância à acidez do solo, com várias doses de mistura entre calcário calcítico e dolomítico, nas safras 90/91 e 91/92, no LEa de Ponta Grossa, PR. In: EMBRAPA SOJA. Resultados de pesquisa de soja 1991/92. Londrina, 1999. pt. 1. p. 367,382. (Embrapa Soja. Documentos, 138).| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 356 | |
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