| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Unidades Centrais. |
|
Data corrente: |
30/06/2004 |
|
Data da última atualização: |
29/07/2004 |
|
Autoria: |
MOTOMIYA, W. R.; FABRÍCIO, A. C.; MARCHETTI, M. E.; GONÇALVES, M. C.; ROBAINA, A. D.; NOVELINO, J. O. |
|
Título: |
Métodos de aplicação de fosfato na soja em plantio direto. |
|
Ano de publicação: |
2004 |
|
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, v. 39, n. 4, p. 307-312, abril 2004. |
|
Idioma: |
Português |
|
Conteúdo: |
O objetivo deste trabalho foi avaliar o efeito de métodos de aplicação e fontes de adubo fosfatado no sistema plantio direto na produção de grãos de soja, num Latossolo Vermelho distroférrico argilo-arenoso. O delineamento experimental foi o de blocos casualizados, com parcelas subdivididas e quatro repetições. As parcelas constituíram-se dos modos de aplicação a lanço e em sulco de semeadura; as subparcelas foram representadas pela testemunha sem fósforo, por adubações de 120 kg ha-1 e 80 kg ha-1 de P2O5, no primeiro e segundo cultivo de soja, respectivamente, com superfosfato triplo (ST), fosfato de Gafsa (FG) e a combinação destas duas fontes (67% ST + 33% FG e 33% ST + 67% FG). As misturas de superfosfato triplo e de fosfato de Gafsa apresentam menor eficiência agronômica, quando comparadas ao superfosfato triplo. O fosfato de Gafsa, quando aplicado a lanço, é equivalente ao superfosfato triplo, no entanto, quando aplicado no sulco de semeadura, mostra-se ineficiente. |
|
Palavras-Chave: |
adubo fosfatado; fosfato natural; Latosol; phosphate fertilizer. |
|
Thesagro: |
Glycine Max; Latossolo. |
|
Thesaurus Nal: |
rock phosphate. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/26679/1/39n04a02.pdf
|
|
Marc: |
LEADER 01739naa a2200265 a 4500
001 1248124
005 2004-07-29
008 2004 bl uuuu u00u1 u #d
100 1 $aMOTOMIYA, W. R.
245 $aMétodos de aplicação de fosfato na soja em plantio direto.
260 $c2004
520 $aO objetivo deste trabalho foi avaliar o efeito de métodos de aplicação e fontes de adubo fosfatado no sistema plantio direto na produção de grãos de soja, num Latossolo Vermelho distroférrico argilo-arenoso. O delineamento experimental foi o de blocos casualizados, com parcelas subdivididas e quatro repetições. As parcelas constituíram-se dos modos de aplicação a lanço e em sulco de semeadura; as subparcelas foram representadas pela testemunha sem fósforo, por adubações de 120 kg ha-1 e 80 kg ha-1 de P2O5, no primeiro e segundo cultivo de soja, respectivamente, com superfosfato triplo (ST), fosfato de Gafsa (FG) e a combinação destas duas fontes (67% ST + 33% FG e 33% ST + 67% FG). As misturas de superfosfato triplo e de fosfato de Gafsa apresentam menor eficiência agronômica, quando comparadas ao superfosfato triplo. O fosfato de Gafsa, quando aplicado a lanço, é equivalente ao superfosfato triplo, no entanto, quando aplicado no sulco de semeadura, mostra-se ineficiente.
650 $arock phosphate
650 $aGlycine Max
650 $aLatossolo
653 $aadubo fosfatado
653 $afosfato natural
653 $aLatosol
653 $aphosphate fertilizer
700 1 $aFABRÍCIO, A. C.
700 1 $aMARCHETTI, M. E.
700 1 $aGONÇALVES, M. C.
700 1 $aROBAINA, A. D.
700 1 $aNOVELINO, J. O.
773 $tPesquisa Agropecuária Brasileira$gv. 39, n. 4, p. 307-312, abril 2004.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agropecuária Oeste (CPAO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
23/11/2023 |
|
Data da última atualização: |
15/01/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
VILLELA, J. M.; ANACHE, J. A. A.; WATANABE, A. M.; FLANAGAN, D. C.; CRESTANA, S. |
|
Afiliação: |
University of Sao Paulo (USP); Federal University of Mato Grosso Do Sul; University of Sao Paulo (USP); USDA-Agricultural Research Service, National Soil Erosion Research Laboratory, 275 S. Russell St., West Lafayette, IN, 47907, USA; SILVIO CRESTANA, CNPDIA. |
|
Título: |
Performance evaluation of a water erosion tracer using plot-scale experiments and process-based modeling. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
International Soil and Water Conservation Research. v. 11, 2023. |
|
Páginas: |
622 - 623 |
|
ISSN: |
2095-6339 |
|
DOI: |
https://doi.org/10.1016/j.iswcr.2023.05.003 |
|
Idioma: |
Inglês |
|
Conteúdo: |
abstract Socioeconomic and environmental losses caused by water erosion have highlighted the importance of quantifying and understanding the dynamics of soil redistribution in the landscape to develop effective soil management practices. Several methods are applied to estimate erosion/deposition rates and identify sources of sediments, among them, the one that uses rare earth elements (REE) as a tracer stands out. However, an alternative not yet explored that can benefit the accuracy of the estimates provided by the method is using a tracer containing a chemical signature composed of more than one REE. The present study aimed to evaluate the performance of a new water erosion tracer based on montmorillonite labeled with rare earth elements (La40-MMT). The innovative aspects of this La40-MMT tracer include its highly stable multi-chemical signature (Nd3þ, La3þ, and Pr3þ), which enhances tracer detection in the environment, and its low production cost due to the use of an industrial residue in the synthesis process. The tracer was evaluated for a typical soil of the Cerrado biome, using a natural rainfall field-scale plot - NRFP (5 m 20 m) and a physical predictive erosion model (WEPP). The results showed that the La40-MMT tracer could be used to estimate erosion/deposition rates, with agreement between the values observed with the tracer and the WEPP model. Thus, this study confirmed the great potential of La40-MMT as a tool to identify patterns of soil redistribution at the field scale and aid in the validation of erosion models. © 2023 International Research and Training Center on Erosion and Sedimentation, China Water and Power Press, and China Institute of Water Resources and Hydropower Research. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BYNC-ND license. Menosabstract Socioeconomic and environmental losses caused by water erosion have highlighted the importance of quantifying and understanding the dynamics of soil redistribution in the landscape to develop effective soil management practices. Several methods are applied to estimate erosion/deposition rates and identify sources of sediments, among them, the one that uses rare earth elements (REE) as a tracer stands out. However, an alternative not yet explored that can benefit the accuracy of the estimates provided by the method is using a tracer containing a chemical signature composed of more than one REE. The present study aimed to evaluate the performance of a new water erosion tracer based on montmorillonite labeled with rare earth elements (La40-MMT). The innovative aspects of this La40-MMT tracer include its highly stable multi-chemical signature (Nd3þ, La3þ, and Pr3þ), which enhances tracer detection in the environment, and its low production cost due to the use of an industrial residue in the synthesis process. The tracer was evaluated for a typical soil of the Cerrado biome, using a natural rainfall field-scale plot - NRFP (5 m 20 m) and a physical predictive erosion model (WEPP). The results showed that the La40-MMT tracer could be used to estimate erosion/deposition rates, with agreement between the values observed with the tracer and the WEPP model. Thus, this study confirmed the great potential of La40-MMT as a tool to identify patterns of soil redistribution at the ... Mostrar Tudo |
|
Palavras-Chave: |
Deposition; Sediment source; Tracer; WEPP Model. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1158662/1/P-Performance-evaluation-of-a-water-erosion-tracer-using-plot-scale.pdf
|
|
Marc: |
LEADER 02642naa a2200253 a 4500
001 2158662
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
022 $a2095-6339
024 7 $ahttps://doi.org/10.1016/j.iswcr.2023.05.003$2DOI
100 1 $aVILLELA, J. M.
245 $aPerformance evaluation of a water erosion tracer using plot-scale experiments and process-based modeling.$h[electronic resource]
260 $c2023
300 $a622 - 623
520 $aabstract Socioeconomic and environmental losses caused by water erosion have highlighted the importance of quantifying and understanding the dynamics of soil redistribution in the landscape to develop effective soil management practices. Several methods are applied to estimate erosion/deposition rates and identify sources of sediments, among them, the one that uses rare earth elements (REE) as a tracer stands out. However, an alternative not yet explored that can benefit the accuracy of the estimates provided by the method is using a tracer containing a chemical signature composed of more than one REE. The present study aimed to evaluate the performance of a new water erosion tracer based on montmorillonite labeled with rare earth elements (La40-MMT). The innovative aspects of this La40-MMT tracer include its highly stable multi-chemical signature (Nd3þ, La3þ, and Pr3þ), which enhances tracer detection in the environment, and its low production cost due to the use of an industrial residue in the synthesis process. The tracer was evaluated for a typical soil of the Cerrado biome, using a natural rainfall field-scale plot - NRFP (5 m 20 m) and a physical predictive erosion model (WEPP). The results showed that the La40-MMT tracer could be used to estimate erosion/deposition rates, with agreement between the values observed with the tracer and the WEPP model. Thus, this study confirmed the great potential of La40-MMT as a tool to identify patterns of soil redistribution at the field scale and aid in the validation of erosion models. © 2023 International Research and Training Center on Erosion and Sedimentation, China Water and Power Press, and China Institute of Water Resources and Hydropower Research. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BYNC-ND license.
653 $aDeposition
653 $aSediment source
653 $aTracer
653 $aWEPP Model
700 1 $aANACHE, J. A. A.
700 1 $aWATANABE, A. M.
700 1 $aFLANAGAN, D. C.
700 1 $aCRESTANA, S.
773 $tInternational Soil and Water Conservation Research.$gv. 11, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
