Buscar

 

RI UFLA (Universidade Federal de Lavras) >
Revistas UFLA >
CERNE >

Por favor, utilize esse identificador para citar este item ou usar como link: http://repositorio.ufla.br/jspui/handle/1/14252

Título: COMPARATION OF METHODS FOR CHEMICAL ANALYSIS OF K, Ca, Mg e Al, IN MATÉ TEA TREE (Ilex paraguariensis St. Hil.)
Autor(es): Carneiro, Charles
Reissmann, Carlos Bruno
Marques, Renato
Assunto: Plant analysis, dry ashing, wet ashing, extraction
Publicador: CERNE
CERNE
Publicação: 21-Set-2015
Outras Identificações: http://www.cerne.ufla.br/site/index.php/CERNE/article/view/407
Informações adicionais: This study was carried out in order to test five chemical methods for leaf analysis and their interrelationships in the analysis of K, Ca, Mg and Al in tea leaves. The samples were collected in a liming experiment, with different base saturation levels, laid out in the field with planted erva-mate (Ilex paraguariensis St. Hil.), located at Pinhais County, Paraná State. The evaluated methods were as follows: Wet digestion with nitro-perchloric acid, dry ashing in porcelain crucibles, dry ashing in platinum crucibles, wet extraction (non digestion) with 1 mol/L HCl and wet extraction (non digestion) with 1 mol/L HCl+d (d=further 1:3 dilution of the extract). In the laboratory, the samples were ordered according a split plot design, being factor A, the five tested methodologies and as factor B, the different base saturation levels of the field. All tested variables presented statistical significance(P<0,01) for variation source and methods. High solubilizations were achieved for most of the tested elements with the nitro-perchloric, dry ashing in porcelain crucibles, and both HCl wet extractions methods. The non digestion methods with HCl showed to be highly promising. High significance was observed for the correlation among methods for K, Mg and Al. Ca showed the poorest correlations among methods.
Idioma: por
Aparece nas coleções: CERNE

Arquivos neste Item:

Não há arquivos associados para este Item.

Itens protegidos por copyright, com todos os direitos reservados, Salvo indicação em contrário.


Mostrar estatísticas

 


DSpace Software Copyright © 2002-2007 MIT and Hewlett-Packard - Feedback