naa a22 4500 510749283 CHVBK 20180411083058.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11270-013-1590-5 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1590-5 Chemical Remediation of an Agricultural Soil: a Case Study of the Tsunami-Affected Area of Chile [Elektronische Daten] [Marco Sandoval, José Celis, Luis Pedreros, Juan Capulín] The present study consisted of an in vitro experiment based on columns to restore a soil affected by the tsunami of 27 February 2010 that struck the Coliumo District, Bio-Bio region, Chile. The agricultural productivity of many coastal lands was severely affected, rendering them unfit for crop production. Composite soil samples were taken at 0 to 20cm soil depth in Coliumo, Bio-Bio region. The initial physical and chemical analysis showed textural changes, low pH, high levels of electrical conductivity (EC), sodium (Na+), and sulfate (SO4 2−), whereas bioassay tests showed severe toxicity for lettuce (Lactuca sativa L.) seeds. Germination index (GI), length of hypocotyl (LH), and length of radicle (LR) were used as indicators in the bioassay tests. Two different treatments were used: T1 = soil amended with 7.7tha−1 of limestone (CaCO3) and T2 = soil amended with 7.7tha−1 of gypsum (CaSO4). A control treatment (T0) with unamended soil was included. Each treatment received a total of 1,100mm of clean water (4water loads, 275mm each), which was equivalent to the mean annual precipitation of the area studied. The T2 treatment produced a significant decrease in the concentration of Na+ (8.27 to 0.16meqL−1), decreased EC (1.58 to 0.03dSm−1), and increased pH from 4.83 to 6.27 in the soil under study. Leaching of Na+ and SO4 2− with successive water loads was effective in the soil. The bioindicators as GI, LH and LR revealed that T2 was more effective than T1 and control in removing Na and SO4 analytes from the soil matrix. The CaSO4 amendment showed good potential for seed development, but further research on plant growth to maturity is required to determine yield parameters in the affected area. Springer Science+Business Media Dordrecht, 2013 Soil remediation nationallicence Salinity nationallicence Toxicity nationallicence Seed germination nationallicence Desalinization nationallicence Sandoval Marco Departamento de Suelos, Universidad de Concepción, Av. Vicente Méndez 595, Chillán, Chile aut Celis José Departamento de Ciencias Pecuarias, Universidad de Concepción, Av. Vicente Méndez 595, Chillán, Chile aut Pedreros Luis Departamento de Suelos, Universidad de Concepción, Av. Vicente Méndez 595, Chillán, Chile aut Capulín Juan Instituto de Ciencias Agropecuarias, Universidad Autónoma del Estado de Hidalgo, Km 1 s/n, Tulancingo, Mexico aut Water, Air, & Soil Pollution Springer Netherlands 224/6(2013-06-01), 1-10 0049-6979 224:6<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1590-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1590-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sandoval Marco Departamento de Suelos, Universidad de Concepción, Av. Vicente Méndez 595, Chillán, Chile aut NATIONALLICENCE 700 1- Celis José Departamento de Ciencias Pecuarias, Universidad de Concepción, Av. Vicente Méndez 595, Chillán, Chile aut NATIONALLICENCE 700 1- Pedreros Luis Departamento de Suelos, Universidad de Concepción, Av. Vicente Méndez 595, Chillán, Chile aut NATIONALLICENCE 700 1- Capulín Juan Instituto de Ciencias Agropecuarias, Universidad Autónoma del Estado de Hidalgo, Km 1 s/n, Tulancingo, Mexico aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/6(2013-06-01), 1-10 0049-6979 224:6<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer