Resumo

STEFANUTTI, R.; MALAVOLTA, E.  e  MURAOKA, T.. Recuperation of residual phosphorus from magnesium thermophosphate of different granule sizes and from granulated ordinary superphosphate. Sci. agric. (Piracicaba, Braz.) [online]. 1995, vol.52, n.2, pp. 233-238. ISSN 0103-9016.  http://dx.doi.org/10.1590/S0103-90161995000200005.

This paper compares the recovery of the residual P₂O₅ from magnesium thermophosphate (MPT) with different granule size, and from granular ordinary superphosphate(OSP). Seven successive crops were grown in pots in a greenhouse and their phosphorus content was analysed. Results demonstrated that powder MTP has the same residual effect as OSP. Coarse MTP, however, caused lower recovery of residual phosphorus.

Palavras-chave : Magnesium thermophosphate; phosphorus; residual phosphorus; particles size; ordinary superphosphate.