Resumen de The sulphate biological reduction in the soils of the province of Granada and its influence on the fertility of the same

P. Romero, V. Callao, C. Pérez Miranda

• Culture and consertaion media and the techniques for the isolation and identification of the bacteria wich reduce the sulfur isolated from the soil, fresh water and sea water are described in this paper. The results obtained from the investigation of this kind of bacteria in 16 samples of soils used the cultivation of graminea (wheat and barley) in the province of Granada are shiown.It is concluded tha these bacterua are practicaly not present in the types of soil studied. On the contrary the phenomenon of sulfidrization is very intense.