Comparação entre o método SMP e o do acetato de cálcio para determinação da acidez potencial de solos de cerrado

Abstract

ln order to establish the correlation between soil potential acidity and SMP solution pH, 4 72 soil samples from the Goiás State cerrado are a were studied. Soils were analyzed for H+AI by the calcium acetate at pH 7 ,O, SMP solution pH, and water pH methods. Data showed a correlation between SMP solution pH and soil H+Al content (r'=0,82), allowing the potential acidity determination in laboratory substitution for the equation obtained (y=222,54+29,83x-164,7lx"').