Effects of three phosphate fertilizers on the acidity of two soils from the municipality of Piracicaba

Authors

  • A.J.B.V. Azevedo Filho USP; Alunos da Escola Superior de Agricultura Luiz de Queiroz
  • C.F. Franco Jr USP; Alunos da Escola Superior de Agricultura Luiz de Queiroz
  • F.A.F. de Mello USP; ESALQ; Departamento de Solos, Geologia e Fertilizantes
  • S. Arzolla USP; ESALQ; Departamento de Solos, Geologia e Fertilizantes

DOI:

https://doi.org/10.1590/S0071-12761988000100031

Keywords:

Soil acidity, soil pH, exchangeable acidity

Abstract

An experiment was carried out, in pots, to study the effects of phosphate fertilizers (ordinary superphosphate, thermal phosphate and rok phosphate) on both, the pH and the amount of exchangeable Al3+ in two soils (Orthic Haplacrox and Orthic Hapludent) from the municipality of Piracicaba, State of São Paulo, Brazil. Thermal phosphate reduced the active and exchangeable acidities in both soils. Rock phosphate and ordinary superphosphate reduced the exchangeable acidity but caused very little effect on the pH of the soils .

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Published

1988-01-01

Issue

Vol. 45 (1988)

Section

Articles

How to Cite

Azevedo Filho, A., Franco Jr, C., Mello, F. de, & Arzolla, S. (1988). Effects of three phosphate fertilizers on the acidity of two soils from the municipality of Piracicaba . Anais Da Escola Superior De Agricultura Luiz De Queiroz, 45, 479-498. https://doi.org/10.1590/S0071-12761988000100031