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Biblioteca(s):  Embrapa Meio-Norte.
Data corrente:  05/09/2012
Data da última atualização:  18/12/2023
Tipo da produção científica:  Artigo em Anais de Congresso
Autoria:  ANDRADE JUNIOR, A. S. de; BASTOS, E. A.; AGUIAR NETTO, A. O.; BRAGA, D. L.; SILVA, M. E.; NOLETO, D. H.
Afiliação:  ADERSON SOARES DE ANDRADE JUNIOR, CPAMN; EDSON ALVES BASTOS, CPAMN; ANTENOR O. AGUIAR NETTO, SERGIPE FEDERAL UNIVERSITY; DARLAN L. BRAGA, CEARA FEDERAL UNIVERSITY; MARIA E. SILVA, PIAUI FEDERAL UNIVERSITY; DONAVAN H. NOLETO, PIAUI FEDERAL UNIVERSITY.
Título:  Agricultural water footprint of ethanol and sugar from sugar cane under fertigation production system.
Ano de publicação:  2012
Fonte/Imprenta:  In: INTERNATIONAL CONFERENCE OF AGRICULTURAL ENGINEERING, 2012, Valencia. Agriculture & engineering for a healthier life: abstracts. Valencia: CIGR: EurAgEng, 2012.
Idioma:  Inglês
Conteúdo:  The study has objective to calculate the green, blue and grey agricultural water footprint (WF) of ethanol and sugar produced from sugar cane, under subsurface fertigation production system, in Piauí State, Brazil. Sugar and ethanol production data in response to different irrigation levels (288, 492 and 675 mm), nitrogen fertigation (90, 113 and 160 kg ha-1 N ) and potassium (60 and 133 kg ha-1 of K2O) plus a control treatment (2,080 mm of rainfall, 75 kg N ha-1 and 75 kg ha-1 of K2O) were obtained from a trial under subsurface drip irrigation system, RB 867515 sugar cane variety, 1st ratoon, conducted in COMVAP - Sugar and Alcohol Inc., União county, Piauí State, Brazil. Under subsurface drip fertigation, the agricultural WF for sugar production ranged from 1,493 L kg-1 (1,175 L kg-1 - green water, 163 L kg-1 - blue water and 155 L kg-1 - grey water) to 1,172 L kg-1 (823 L kg-1 - green water, 267 L kg-1 - blue water and 83 L kg-1 - gray water). For ethanol production, the agricultural WF ranged from 2,081 L L-1 (1,638 L L-1 - green water, 227 L L-1 - blue water and 216 L L-1 - grey water) to 1,483 L L-1 (1,040 L L-1 - green water, 338 L L-1 - blue water and 105 L L-1 - grey water). Under non-irrigated condition, the agricultural WF for sugar production was 1,915 L kg-1 (1,763 L kg-1 - green water and 152 L kg-1 - grey water) and 2,658 L L-1 (2,448 L L-1 - water green and 211 L L-1 - grey water) for ethanol production. The agricultural WF for the ethanol production was supe... Mostrar Tudo
Palavras-Chave:  Demanda de água; Irrigação por gotejamento subterrâneo.
Thesagro:  Bioenergia.
Categoria do assunto:  X Pesquisa, Tecnologia e Engenharia
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/65606/1/Agricultural7390001.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Meio-Norte (CPAMN)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CPAMN27456 - 1UPCAA - PPS 100/122012.00100
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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 ... 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:  Mostrar Marc Completo
Registro original:  Embrapa Instrumentação (CNPDIA)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CNPDIA18306 - 1UPCAP - DDPROCI.23/1072023/114
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