Residual effects of phosphate fertilizers

Authors

  • Francisco de A. F. de Mello ESALQ; Departamento de Solo
  • Moacyr de O. C. do Brasil Sobrinho ESALQ; Departamento de Solo
  • S. Joly ESALQ; Instituto Zimotécnico
  • E. Malavolta ESALQ; Departamento de Química

DOI:

https://doi.org/10.1590/S0071-12761974000100018

Abstract

The residual effects of phosphate fertilizers are studied by means of radioactive phosphorus and the Neubauer and A. niger methods. The highest residual effect was observed for Olinda rockphosphate, the least soluble of those studied. Superphosphate and Fertifos, a pricipitated phosphate, were similar in their residual effects. The laboratory results agree with those obtained under field conditions.

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Published

1974-01-01

Issue

Vol. 31 (1974)

Section

naodefinida

How to Cite

Mello, F. de A. F. de, Brasil Sobrinho, M. de O. C. do, Joly, S., & Malavolta, E. (1974). Residual effects of phosphate fertilizers . Anais Da Escola Superior De Agricultura Luiz De Queiroz, 31, 243-249. https://doi.org/10.1590/S0071-12761974000100018