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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
19/01/1996 |
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Data da última atualização: |
19/01/1996 |
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Autoria: |
SINGH, M.; YADAV, D. S.; KUMAR, V. |
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Afiliação: |
Haryana Agricultural University. |
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Título: |
Leaching and transformation of urea in dry and wet soils as affected by irrigation water. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Plant and Soil, v.81, p.411-420, 1984. |
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Idioma: |
Inglês |
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Conteúdo: |
The leaching losses of urea in dry and wet soils as affected by the irrigation water, were studied in 90 cm long and 5 cm diameter plexiglass. columns. In dry sandy loam soil urea leached with irrigation water and peaks of urea were observed with water front but in sandy soil the wetting front moved faster leaving the urea peak behind. In initially wet soils the urea peak did not coincide the wetting front, following infiltration and after redistribution for 24 hours of infiltration. More urea was recovered in sandy soil than in sandy loam soil following infiltration and redistribution for 24 hours. Urea leached only upto 30 cm with 5 and 7.5 cm irrigation water whereas with 10 and 15 cm irrigation water profiles urea penetrated to deeper layers. The sub-surface application of urea did not change the leaching behaviour of urea. Urea behaves as a non-reacting ion like Cl with respect to its movement with soil-water before it is hydrolysed. |
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Palavras-Chave: |
Dry soils; Solo seco; Wet soils. |
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Thesagro: |
Irrigação; Lixiviação; Solo Úmido; Uréia. |
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Thesaurus Nal: |
irrigation; leaching; urea. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01613naa a2200265 a 4500
001 1075703
005 1996-01-19
008 1984 bl --- 0-- u #d
100 1 $aSINGH, M.
245 $aLeaching and transformation of urea in dry and wet soils as affected by irrigation water.
260 $c1984
520 $aThe leaching losses of urea in dry and wet soils as affected by the irrigation water, were studied in 90 cm long and 5 cm diameter plexiglass. columns. In dry sandy loam soil urea leached with irrigation water and peaks of urea were observed with water front but in sandy soil the wetting front moved faster leaving the urea peak behind. In initially wet soils the urea peak did not coincide the wetting front, following infiltration and after redistribution for 24 hours of infiltration. More urea was recovered in sandy soil than in sandy loam soil following infiltration and redistribution for 24 hours. Urea leached only upto 30 cm with 5 and 7.5 cm irrigation water whereas with 10 and 15 cm irrigation water profiles urea penetrated to deeper layers. The sub-surface application of urea did not change the leaching behaviour of urea. Urea behaves as a non-reacting ion like Cl with respect to its movement with soil-water before it is hydrolysed.
650 $airrigation
650 $aleaching
650 $aurea
650 $aIrrigação
650 $aLixiviação
650 $aSolo Úmido
650 $aUréia
653 $aDry soils
653 $aSolo seco
653 $aWet soils
700 1 $aYADAV, D. S.
700 1 $aKUMAR, V.
773 $tPlant and Soil$gv.81, p.411-420, 1984.
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Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
25/11/2002 |
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Data da última atualização: |
25/11/2002 |
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Autoria: |
COUTINHO, W. M.; PEREIRA, L. A. A.; MACHADO, J. C.; FREITAS-SILVA, O.; PENA, R. C. M.; MAGALHAES, F. H. L. |
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Título: |
Efeitos de hipoclorito de sodio na germinacao de conidios de alguns fungos transmitidos por sementes. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Fitopatologia Brasileira, Brasilia, n.25, n.3, p.552-555, 2000. |
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Idioma: |
Português |
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Palavras-Chave: |
Fitopatologia. |
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Thesagro: |
Fungo; Semente. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00615naa a2200205 a 4500
001 1413872
005 2002-11-25
008 2000 bl --- 0-- u #d
100 1 $aCOUTINHO, W. M.
245 $aEfeitos de hipoclorito de sodio na germinacao de conidios de alguns fungos transmitidos por sementes.
260 $c2000
650 $aFungo
650 $aSemente
653 $aFitopatologia
700 1 $aPEREIRA, L. A. A.
700 1 $aMACHADO, J. C.
700 1 $aFREITAS-SILVA, O.
700 1 $aPENA, R. C. M.
700 1 $aMAGALHAES, F. H. L.
773 $tFitopatologia Brasileira, Brasilia$gn.25, n.3, p.552-555, 2000.
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Embrapa Agroindústria de Alimentos (CTAA) |
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