Data/hora: 16/06/2024 08:52:55

Provedor de dados: | 63
País: | Brazil
Título: | Barium extraction potential by mustard, sunflower and castor bean
Autores: | Coscione,Aline Renée; Berton,Ronaldo Severiano.
Data: | 2009-02-01
Ano: | 2009
Palavras-chave: | Toxicity; Phytoextraction; Fransference factor; Ion exchange resin; Exchangeable Ba.
Resumo: | Barium salts are used extensively for industrial purposes, generating residues that, if not appropriately disposed, can increase soil Ba content. The aim of the present work was to evaluate Ba extraction potential of mustard (Brassica juncea Czern.), sunflower (Helianthus annuus L.), and castor bean (Ricinus communis L.), grown in a soil artificially contaminated with increasing Ba additions. A greenhouse experiment was carried out by adding BaSO4 to a Rhodic Hapludox sample, at the 0, 150 and 300 mg kg-1 rates. After harvesting, the pot soil material was also analyzed for exchangeable Ba by CaCl2 extraction and by an ion exchange resin method. None of the plant species tested presented toxicity symptoms, decreased nutrient accumulation or decreased dry matter production in response to Ba treatments. The accumulation of Ba, in decreasing capacity was: sunflower&gt; mustard&gt; castor bean. The largest accumulation was with sunflower at 300 mg kg-1 of Ba added to the soil. When evaluated by the transference factor, none of the species tested was an efficient Ba accumulator, up to 47 days after emergence. The ion exchange resin method was not adequate to evaluate Ba availability to these plants.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100008
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90162009000100008
Formato: | text/html
Fonte: | Scientia Agricola  v.66 n.1 2009
Fonte: | info:eu-repo/semantics/openAccess