Data/hora: 02/06/2024 16:11:49

Provedor de dados: 	63	
País: 	Brazil	
Título: 	Bioavailability of cadmium and lead in a soil amended with phosphorus fertilizers	
Autores: 	Mendes,Alessandra Monteiro Salviano; Duda,Gustavo Pereira; Nascimento,Clístenes Williams Araújo do; Silva,Michelangelo Oliveira.	
Data: 	2006-08-01	
Ano: 	2006	
Palavras-chave: 	Heavy metals; Phytoextraction.	
Resumo: 	Phosphorus fertilizers are essential to obtain high productivity, however, they contain heavy metals that can contaminate the soil and threat the health of animals and humans. The present study focused the determination of Cd and Pb concentrations in different phosphorus fertilizers as well as the absorption of these heavy metals by velvet green bean grown on soil amended with such fertilizers. The experiment was set up as a completely randomized design in a factorial scheme. The factors were four phosphorus sources (triple superphosphate-TS, Yorin thermophosphate-YT, Araxa rock phosphate-AP, and Gafsa rock phosphate-GP) applied at five rates (0, 92, 183, 275, and 366 kg ha-1 of P2O5). The data obtained were submitted to variance and regression analysis. Lead availability to velvet bean was not altered as a result of fertilizer application. On the other hand, Cd uptake was significantly increased with addition of the tested fertilizers. Such an increase was a function of the rate. The highest Cd contents in shoots was reached by YT and TS applications, whereas the lowest one resulted from rock phosphate treatments. All the phosphorus sources tested increased Cd uptake in the first harvest. For the second harvest, Cd content in the shoot was detected only in plants grown on TS and GP amended soils.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000400003	
Editor: 	São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"	
Relação: 	10.1590/S0103-90162006000400003	
Formato: 	text/html	
Fonte: 	Scientia Agricola  v.63 n.4 2006	
Fonte: 	info:eu-repo/semantics/openAccess