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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
13/08/1998 |
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Data da última atualização: |
06/02/2024 |
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Autoria: |
OLIVEIRA, F. das C.; COELHO, E. F.; NASCIMENTO, C. J. |
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Título: |
Comportamento de dois materiais filtrantes usados num sistema de drenagem em cultura de manga. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENGENHARIA AGRICOLA, 27., 1998, Pocos de Caldas. Anais... Lavras: UFLA/SBEA, 1998. v.1, p. 19-21. |
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Idioma: |
Português |
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Conteúdo: |
Foi avaliado o comportamento de dois materiais envelopes (areia grossa e manta de poliester) em sistema de drenagem com drenos de 200 m de comprimento, espaçados 35 m. O monitoramento do lençol freatico na area foi feito em quatro baterias de poços de observaçao e o monitoramento da vazao na saida dos drenos foi feita por meio de hidrometros. Os resultados mostraram maior eficiencia na drenagem para os drenos tendo areia grossa como envelope. |
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Palavras-Chave: |
Envelope. |
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Thesagro: |
Drenagem; Lençol Freático; Manga. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01054nam a2200181 a 4500
001 1053164
005 2024-02-06
008 1998 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, F. das C.
245 $aComportamento de dois materiais filtrantes usados num sistema de drenagem em cultura de manga.
260 $aIn: CONGRESSO BRASILEIRO DE ENGENHARIA AGRICOLA, 27., 1998, Pocos de Caldas. Anais... Lavras: UFLA/SBEA, 1998. v.1, p. 19-21.$c1998
520 $aFoi avaliado o comportamento de dois materiais envelopes (areia grossa e manta de poliester) em sistema de drenagem com drenos de 200 m de comprimento, espaçados 35 m. O monitoramento do lençol freatico na area foi feito em quatro baterias de poços de observaçao e o monitoramento da vazao na saida dos drenos foi feita por meio de hidrometros. Os resultados mostraram maior eficiencia na drenagem para os drenos tendo areia grossa como envelope.
650 $aDrenagem
650 $aLençol Freático
650 $aManga
653 $aEnvelope
700 1 $aCOELHO, E. F.
700 1 $aNASCIMENTO, C. J.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
25/11/2010 |
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Data da última atualização: |
25/11/2010 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SANTOS JUNIOR, J. de D. G. dos; REIN, T. A.; SOUSA, D. M. G. de; MURAOKA, T.; BLAIR, G. J. |
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Afiliação: |
JOAO DE DEUS GOMES DOS SANTOS JUNIOR, CPAC; THOMAZ ADOLPHO REIN, CPAC; DJALMA MARTINHAO GOMES DE SOUSA, CPAC; TAKASHI MURAOKA, USP; GRAEME JOHN BLAIR, UNIVERSITY OF NEW ENGLAND. |
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Título: |
Evaluation of sulphur enhanced fertilizers in a soybean-wheat rotation grown in a Brazilian Cerrado Oxisol. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Brisbane: International Union of Soil Science: ASSSI, 2010. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
The Brazilian savannas (“Cerrado”) occupy 204 million ha with low-fertility acid Oxisols the dominant soils. Sulphur (S) deficiency is widespread in the region. Incorporation of sulphate sources (largely single superphosphate and ammonium sulphate) into fertilizer formulations leads to lower NPK concentrations and higher transport costs compared to high-analysis S-free NPK formulations. Elemental sulphur, with nearly 100% S, offers a cost-effective alternative to incorporate S into fertilizer formulations. A field experiment
was carried out on a clayey Cerrado Oxisol to evaluate the agronomic efficiency of experimental “Sulphur Enhanced Fertilizers (SEF)” containing varying proportions of microfine elemental S and sulphate incorporated into granules of mono-ammonium phosphate and triple superphosphate. Powdered calcium sulphate (phosphogypsum) was used as the reference S source. Fertilizers were band applied and the fresh and residual effects evaluated in a soybean-wheat rotation for one year (two crops). Grain yields,
aboveground S content, S concentration in diagnostic leaves and SPAD values were measured for both crops. There was no significant yield response to S or difference in above ground S content in the soybean crop. There was a significant response to freshly applied gypsum and SEF 774 in the wheat crop, with a higher S content in the gypsum treatment. The residual effectiveness of gypsum, and the two SEF treatments was equal in both yield and S content in the wheat crop. MenosThe Brazilian savannas (“Cerrado”) occupy 204 million ha with low-fertility acid Oxisols the dominant soils. Sulphur (S) deficiency is widespread in the region. Incorporation of sulphate sources (largely single superphosphate and ammonium sulphate) into fertilizer formulations leads to lower NPK concentrations and higher transport costs compared to high-analysis S-free NPK formulations. Elemental sulphur, with nearly 100% S, offers a cost-effective alternative to incorporate S into fertilizer formulations. A field experiment
was carried out on a clayey Cerrado Oxisol to evaluate the agronomic efficiency of experimental “Sulphur Enhanced Fertilizers (SEF)” containing varying proportions of microfine elemental S and sulphate incorporated into granules of mono-ammonium phosphate and triple superphosphate. Powdered calcium sulphate (phosphogypsum) was used as the reference S source. Fertilizers were band applied and the fresh and residual effects evaluated in a soybean-wheat rotation for one year (two crops). Grain yields,
aboveground S content, S concentration in diagnostic leaves and SPAD values were measured for both crops. There was no significant yield response to S or difference in above ground S content in the soybean crop. There was a significant response to freshly applied gypsum and SEF 774 in the wheat crop, with a higher S content in the gypsum treatment. The residual effectiveness of gypsum, and the two SEF treatments was equal in both yield and S content in the whe... Mostrar Tudo |
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Thesagro: |
Fertilidade do Solo; Fertilizante; Latossolo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02159naa a2200217 a 4500
001 1867941
005 2010-11-25
008 2010 bl uuuu u00u1 u #d
100 1 $aSANTOS JUNIOR, J. de D. G. dos
245 $aEvaluation of sulphur enhanced fertilizers in a soybean-wheat rotation grown in a Brazilian Cerrado Oxisol.
260 $c2010
300 $c1 CD-ROM.
520 $aThe Brazilian savannas (“Cerrado”) occupy 204 million ha with low-fertility acid Oxisols the dominant soils. Sulphur (S) deficiency is widespread in the region. Incorporation of sulphate sources (largely single superphosphate and ammonium sulphate) into fertilizer formulations leads to lower NPK concentrations and higher transport costs compared to high-analysis S-free NPK formulations. Elemental sulphur, with nearly 100% S, offers a cost-effective alternative to incorporate S into fertilizer formulations. A field experiment was carried out on a clayey Cerrado Oxisol to evaluate the agronomic efficiency of experimental “Sulphur Enhanced Fertilizers (SEF)” containing varying proportions of microfine elemental S and sulphate incorporated into granules of mono-ammonium phosphate and triple superphosphate. Powdered calcium sulphate (phosphogypsum) was used as the reference S source. Fertilizers were band applied and the fresh and residual effects evaluated in a soybean-wheat rotation for one year (two crops). Grain yields, aboveground S content, S concentration in diagnostic leaves and SPAD values were measured for both crops. There was no significant yield response to S or difference in above ground S content in the soybean crop. There was a significant response to freshly applied gypsum and SEF 774 in the wheat crop, with a higher S content in the gypsum treatment. The residual effectiveness of gypsum, and the two SEF treatments was equal in both yield and S content in the wheat crop.
650 $aFertilidade do Solo
650 $aFertilizante
650 $aLatossolo
700 1 $aREIN, T. A.
700 1 $aSOUSA, D. M. G. de
700 1 $aMURAOKA, T.
700 1 $aBLAIR, G. J.
773 $tBrisbane: International Union of Soil Science: ASSSI, 2010.
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