Extração do alumínio trocável e o pH do solo
DOI:
https://doi.org/10.1590/S0071-12761969000100003Abstract
Aluminum and hydrogen ions extracted from soils with 1 N KC1 solution are considered the most active forms of acidity. In fact, the displacement of those ions by continuous percolation with 250 ml of 1 N KC1 solution increased the pH of seven soils samples studied, determined in soil: water proportion 1 : 2,5. However, the pH of five soils samples remained 6.25, 6.05, 5.80, 5.45 and 5.05 after the extraction with 1 N KC1 solution, pointing out the presence of other active forms of acidity. Those samples wich were treated with KC1 solution and then with 1 N calcium acetate solution(pH=7,0) presented other components of soil acidity, determined by titration with standardized 0,02 N NaOH solution.Downloads
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Published
1969-01-01
Issue
Section
naodefinida
How to Cite
Catani, R., & Alonso, O. (1969). Extração do alumínio trocável e o pH do solo . Anais Da Escola Superior De Agricultura Luiz De Queiroz, 26, 21-29. https://doi.org/10.1590/S0071-12761969000100003