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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
20/08/2004 |
Data da última atualização: |
30/06/2005 |
Autoria: |
FRANCHINI, J. C.; PAVAN, M. A.; MIYAZAWA, M. |
Título: |
Redistribution of phosphorus in soil through cover crop roots. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Brazilian Archives of Biology and Technology, Curitiba, vol.47, no.3, p.381-386, July 2004. |
Idioma: |
Inglês |
Conteúdo: |
The objective of this study was to evaluate if cover crops can absorb P from the upper layers and transport it in their roots to subsoil layers. Samples of an Oxisol were placed in PVC columns. Super phosphate fertilizer was applied to the 0-10 cm soil surface layers. The cover crops tested were: Avena strigosa, Avena sativa, Secale cereale, Pisum sativum subsp arvense, Pisum sativum, Vicia villosa, Vicia sativa, Lupinus angustifoliu, Lupinus albus, and Triticum aestivum. After a growth period of 80 days the cover crop shoots were cut off and the soil was divided into 10cm layers and the roots of each layer were washed out. The roots and shoots were analyzed separated for total P contribution to the soil. Considerable amount of P was present in the roots of cover crops. Vicia sativa contained more than 60% of total plant P in the roots. The contribution of Vicia sativa to soil P bellow the fertilized zone was about 7 kg ha-1. It thus appeared that there existed a possibility of P redistribution into the soil under no tillage by using cover crops in rotation with cash crops. Vicia sativa was the most efficient cover crop species as P carrier into the roots from superficial layer to lower layers. |
Thesagro: |
Adubação Verde; Fósforo; Plantio Direto; Solo. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01761naa a2200193 a 4500 001 1467281 005 2005-06-30 008 2004 bl --- 0-- u #d 100 1 $aFRANCHINI, J. C. 245 $aRedistribution of phosphorus in soil through cover crop roots. 260 $c2004 520 $aThe objective of this study was to evaluate if cover crops can absorb P from the upper layers and transport it in their roots to subsoil layers. Samples of an Oxisol were placed in PVC columns. Super phosphate fertilizer was applied to the 0-10 cm soil surface layers. The cover crops tested were: Avena strigosa, Avena sativa, Secale cereale, Pisum sativum subsp arvense, Pisum sativum, Vicia villosa, Vicia sativa, Lupinus angustifoliu, Lupinus albus, and Triticum aestivum. After a growth period of 80 days the cover crop shoots were cut off and the soil was divided into 10cm layers and the roots of each layer were washed out. The roots and shoots were analyzed separated for total P contribution to the soil. Considerable amount of P was present in the roots of cover crops. Vicia sativa contained more than 60% of total plant P in the roots. The contribution of Vicia sativa to soil P bellow the fertilized zone was about 7 kg ha-1. It thus appeared that there existed a possibility of P redistribution into the soil under no tillage by using cover crops in rotation with cash crops. Vicia sativa was the most efficient cover crop species as P carrier into the roots from superficial layer to lower layers. 650 $aAdubação Verde 650 $aFósforo 650 $aPlantio Direto 650 $aSolo 700 1 $aPAVAN, M. A. 700 1 $aMIYAZAWA, M. 773 $tBrazilian Archives of Biology and Technology, Curitiba, vol.47, no.3, p.381-386, July 2004.
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Embrapa Soja (CNPSO) |
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Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
24/11/1995 |
Data da última atualização: |
24/11/1995 |
Autoria: |
SILVA, A. R. da; DEDECEK, R.; LEITE, J. C. |
Título: |
Comparacao de especies cultivadas com o trigo, no periodo da seca, com irrigacao em Brasilia. |
Ano de publicação: |
0 |
Fonte/Imprenta: |
Brasilia: EMBRAPA-CPAC, [s.d.]. |
Páginas: |
1p. |
Idioma: |
Português |
Palavras-Chave: |
Cultivar Cargill - 111; Cultivar IAC 1246; Cultivar IAC 2; Cultivar IAC-5; Cultivar Rico; Cultivar SL-7; Cultivar Tatui; Epoca seca. |
Thesagro: |
Cerrado; Irrigação; Trigo; Triticum Aestivum. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00753nam a2200277 a 4500 001 1550394 005 1995-11-24 008 bl uuuu u00u1 u #d 100 1 $aSILVA, A. R. da 245 $aComparacao de especies cultivadas com o trigo, no periodo da seca, com irrigacao em Brasilia. 260 $aBrasilia: EMBRAPA-CPAC, [s.d.].$c0 300 $a1p. 650 $aCerrado 650 $aIrrigação 650 $aTrigo 650 $aTriticum Aestivum 653 $aCultivar Cargill - 111 653 $aCultivar IAC 1246 653 $aCultivar IAC 2 653 $aCultivar IAC-5 653 $aCultivar Rico 653 $aCultivar SL-7 653 $aCultivar Tatui 653 $aEpoca seca 700 1 $aDEDECEK, R. 700 1 $aLEITE, J. C.
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