Consulta: creatorFacets:"Gloaguen,Thomas Vincent"
Registros recuperados: 4
Data/hora: 16/06/2024 08:51:03

Soil Chemistry after Irrigation with Treated Wastewater in Semiarid Climate
Provedor de dados: 90
Autores: Oliveira,Pedro Carlos Pacheco de; Gloaguen,Thomas Vincent; Gonçalves,Roberta Alessandra Bruschi; Santos,Dionei Lima; Couto,Carolina Fonseca.
ABSTRACT Soil irrigation using treated wastewater in the Brazilian semiarid region is a promising practice as this area currently faces water scarcity and pollution of water resources by domestic sewage. The aim of this study was to evaluate the use of treated wastewater in drip irrigation and its effect on the chemistry of soil cultivated with squash (Cucurbita maxima Duch.) Coroa IAC and to verify whether there was an increase in soil salinity under a semiarid climate. The experiment was conducted for 123 days on a farm close to the sewage treatment plant, in a randomized block design with five treatments and four replications. The treatments consisted of two irrigation water depths (100 and 150 % of the evapotranspiration), two applications of gypsum to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salinity; Soil sodification; Gypsum application.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100409

Irrigation with domestic wastewater: a multivariate analysis of main soil changes
Provedor de dados: 90
Autores: Gloaguen,Thomas Vincent; Gonçalves,Roberta Alessandra Bruschi; Forti,Maria Cristina; Lucas,Yves; Montes,Célia Regina.
Irrigation with treated domestic sewage wastewater (TSE) is an agricultural practice to reduce water requirements of agroecossystems and the nutrient load impact on freshwaters, but adverse effects on soil chemical (salinization, sodification, etc.) and soil physical properties (alteration in soil porosity and hydraulic conductivity, etc.) have been reported. This study aimed to define some relationships among these changes in an Oxisol using multivariate analysis. Corn (Zea mays L.) and sunflower (Helianthus annuus L.) were grown for two years, irrigated with TSE. The following soil properties were determined: Ca2+; Mg2+; Na+; K+ and H + Al contents, cationic exchangeable capacity (CEC), sum of bases (SB), base saturation (V), texture (sand, silt and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil porosity; Soil sodicity; Factor analysis.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400038

Composição química da solução do solo nas diferentes classes de poro do solo
Provedor de dados: 90
Autores: Gloaguen,Thomas Vincent; Pereira,Francisco Adriano de Carvalho; Gonçalves,Roberta Alessandra Bruschi; Paz,Vital da Silva.
A composição química da solução do solo pode ser considerada indicadora da presença de nutrientes ou contaminantes no solo. Para analisar a variação dessa composição nos poros do solo, utilizou-se um sistema de extração sequencial da solução do solo em diferentes classes de diâmetro de poro. Colunas de PVC foram construídas e preenchidas com terra fina seca ao ar de um Cambissolo Háplico distrófico, e irrigadas com água destilada (T1), efluente de estação de tratamento de esgoto sanitário EETE (T2) e EETE + 1,2 g L-1 CaSO4 (T3), aplicando lâminas de 150 e 300 mm. Antes da irrigação e após cada lâmina, aplicaram-se na base de cada coluna os seguintes potenciais: 0, 13,3, 26,7, 40,0 e 53,3 kPa para extração e coleta da solução do solo nas faixas de poros: Ø...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Porosidade do solo; Efluente de estação de tratamento de esgoto; Gesso; Nitrato; Sodicidade.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500004

Pore size distribution in soils irrigated with sodic water and wastewater
Provedor de dados: 90
Autores: Gonçalves,Roberta Alessandra Bruschi; Gloaguen,Thomas Vincent; Folegatti,Marcos Vinicius; Libardi,Paulo Leonel; Lucas,Yves; Montes,Célia Regina.
Soil porosity, especially pore size distribution, is an important controlling factor for soil infiltration, hydraulic conductivity, and water retention. This study aimed to verify the effect of secondary-treated domestic wastewater (STW) on the porosity of a sandy loam Oxisol in the city of Lins, state of São Paulo, Brazil. The two-year experiment was divided into three plots: soil cultivated with corn and sunflower and irrigated with STW, soil cultivated and irrigated with sodic groundwater, and non-irrigated and non-cultivated soil (control). At the end of the experiment, undisturbed core samples were sampled from 0 to 2.0 m (8 depths). The water retention curves were obtained by tension plates and Richard's pressure plate apparatus, and the pore size...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sodic wastewater; Soil porosity; Clay dispersion; Soil sodicity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300011