Data/hora: 11/06/2024 17:45:15

Provedor de dados: | 90
País: | Brazil
Título: | Assessment of micronutrient extractants from soils of Paraná, Brazil
Autores: | Sarto,Marcos Vinicius Mansano; Steiner,Fábio; Lana,Maria do Carmo.
Data: | 2011-12-01
Ano: | 2011
Palavras-chave: | Soil analysis; Correlation; Copper; Zinc; Iron; Manganese.
Resumo: | In Brazil, plant-available micronutrients in the soil can be determined by several chemical extractants, the most common of which are dilute acid and chelating solutions. The purpose of this study was to assess the extractants 0.1 mol L-1 HCl, Mehlich-1, Mehlich-3 and DTPA for analysis of the micronutrients Cu, Zn, Fe, and Mn in soils from the state of Paraná. In samples from 12 soils (0-20 cm layer), wheat was planted (Triticum aestivum), grown for 42 days after emergence, and then bean (Phaseolus vulgaris) for 38 days. At the end of each planting period, the soil was sampled again. All extractants tested to assess the availability of Cu, Zn, Fe, and Mn correlated with each other. The efficiency of the extractants HCl, Mehlich-3 and DTPA in assessing plant-available Cu was similar, unlike Mehlich-1, which proved less efficient. The extractants HCl, Mehlich-1 and Mehlich-3 were less efficient in estimating plant-available Zn and Fe, and the most indicated extractant is DTPA. The efficiency of the extractants HCl, Mehlich-1, Mehlich-3 and DTPA in assessing plant-available Mn in soils from Paraná was similar.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000600024
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/S0100-06832011000600024
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.35 n.6 2011
Fonte: | info:eu-repo/semantics/openAccess