Data/hora: 11/06/2024 12:12:26

Provedor de dados: | 90
País: | Brazil
Título: | CHROMIUM IN SOIL ORGANIC MATTER AND COWPEA AFTER FOUR CONSECUTIVE ANNUAL APPLICATIONS OF COMPOSTED TANNERY SLUDGE
Autores: | Oliveira,Mara Lucia Jacinto; Araujo,Ademir Sérgio Ferreira de; Melo,Wanderley José de.
Data: | 2015-02-01
Ano: | 2015
Palavras-chave: | Soil contamination; Humic substances; Solid residue; Heavy metals; Plant growth; Trace elements.
Resumo: | Tannery sludge contains high concentrations of inorganic elements, such as chromium (Cr), which may lead to environmental pollution and affect human health The behavior of Cr in organic matter fractions and in the growth of cowpea (Vigna unguiculata L.) was studied in a sandy soil after four consecutive annual applications of composted tannery sludge (CTS). Over a four-year period, CTS was applied on permanent plots (2 × 5 m) and incorporated in the soil (0-20 cm) at the rates of 0, 2.5, 5.0, 10.0, and 20.0 Mg ha-1 (dry weight basis). These treatments were replicated four times in a randomized block design. In the fourth year, cowpea was planted and grown for 50 days, at which time we analyzed the Cr concentrations in the soil, in the fulvic acid, humic acid, and humin fractions, and in the leaves, pods, and grains of cowpea. Composted tannery sludge led to an increase in Cr concentration in the soil. Among the humic substances, the highest Cr concentration was found in humin. The application rates of CTS significantly increased Cr concentration in leaves and grains.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100297
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/01000683rbcs20150158
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.39 n.1 2015
Fonte: | info:eu-repo/semantics/openAccess