menu menu_open
Brazil
home Table of contents navigate_before previous current next navigate_next
home Table of contents
Nota • Rev. Bras. Ciênc. Solo 24 (3) • Sept 2000 • https://doi.org/10.1590/S0100-06832000000300023 linkcopy

Open-access Estimation of potential acidity by pH SMP in soils from Northeastern Brazil

AuthorshipSCIMAGO INSTITUTIONS RANKINGS

    In this study the relationship between the pH SMP and H + Al concentrations was evaluated, in order to establish an equation for estimating the potential acidity of soils from Northeastern Brazil. The H + Al concentration (calcium acetate 0.5 mol L-1, pH 7.0) and pH SMP were analyzed in 81 soil samples. Soil carbon content ranged from 1.8 to 35.6 g kg-1, and clay content varied from 60 to 590 g kg-1. The equation H + Al = 31.521(pH SMP)² -451.61 pH SMP + 1625.3 (R² = 0.87**), with H + Al in mmol c dm-3, provides a good estimation of potential acidity by using the pH SMP.

    soil pH; buffer solution; hydrogen; exchangeable aluminum

    vertical_align_top file_download show_chart
    location_on
    Sociedade Brasileira de Ciência do Solo Sociedade Brasileira de Ciência do Solo, Departamento de Solos - Edifício Silvio Brandão, s/n, Caixa Postal 231 - Campus da UFV, CEP 36570-900 - Viçosa-MG, Tel.: (31) 3612-4542 - Viçosa - MG - Brazil
    E-mail: sbcs@sbcs.org.br
    rss_feed Stay informed of issues for this journal through your RSS reader
    Accessibility / Report Error