Phosphorus fixation by a latossol and determination of the "X" value of the soil

Authors

  • Airton Manzano Escola Superior de Agricultura Luiz de Queiroz
  • Helvécio de Polli Escola Superior de Agricultura Luiz de Queiroz
  • Jeziel C. Freire Escola Superior de Agricultura Luiz de Queiroz
  • Lafayette F. Sobral Escola Superior de Agricultura Luiz de Queiroz
  • Maurício de Souza Escola Superior de Agricultura Luiz de Queiroz
  • Nelson Ventorin Escola Superior de Agricultura Luiz de Queiroz
  • Francisco de A. F. de Mello a Escola Superior de Agricultura Luiz de Queiroz

DOI:

https://doi.org/10.1590/S0071-12761976000100055

Abstract

An assay was conducted with the aim to evaluate the phosphorus fixation capacity of A1 (0-22cm), A3 (22-56em) and B22 (155-200cm horizons of a "Roxo Latossol". Also, the "X" value of WAUGH & FITTS (1966) of the three horizons was determinated. The main results are showed below : 1 - The phosphorus fixation capacity of the three horizons are in the following rank: B22 >; A3 >; A1. 2 - The "X" value are: 350 ppm (B22 horizon), 225 ppm (A3 horizon) and 175 ppm (A1 horizon). 3 - Correlations were found at the level of 1'% between added R and fixed R by the studied horizons.

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Published

1976-01-01

Issue

Vol. 33 (1976)

Section

naodefinida

How to Cite

Manzano, A., Polli, H. de, Freire, J. C., Sobral, L. F., Souza, M. de, Ventorin, N., & Mello, F. de A. F. de. (1976). Phosphorus fixation by a latossol and determination of the "X" value of the soil . Anais Da Escola Superior De Agricultura Luiz De Queiroz, 33, 625-633. https://doi.org/10.1590/S0071-12761976000100055