Data/hora: 13/06/2024 20:00:34

Provedor de dados: | 90
País: | Brazil
Título: | Pore size distribution in soils irrigated with sodic water and wastewater
Autores: | Gonçalves,Roberta Alessandra Bruschi; Gloaguen,Thomas Vincent; Folegatti,Marcos Vinicius; Libardi,Paulo Leonel; Lucas,Yves; Montes,Célia Regina.
Data: | 2010-06-01
Ano: | 2010
Palavras-chave: | Sodic wastewater; Soil porosity; Clay dispersion; Soil sodicity.
Resumo: | 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 distribution inferred from the retention curves. It was found that irrigation with treated wastewater and treated groundwater led to a decrease in microporosity (V MI), defined as the pore class ranging from 0.2 to 50 μm diameter. On the other hand, a significant increase in cryptoporosity (V CRI) (&lt; 0.2 μm) was identified throughout the soil profile. The presence of Na+ in both waters confirmed the role of this ion on pore size distribution and soil moisture (higher water retention).
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300011
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/S0100-06832010000300011
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.34 n.3 2010
Fonte: | info:eu-repo/semantics/openAccess