BACILLUS-CEREUS VAR FLUORESCENS INOCULATI ON OF PASTURES IN THE HYDROMORPHIC SOILS OF THE SIERRA DE GUADARRAMA

In the experiment we studied a ''hydromorfic soil'' (pH=5.5), with 4% of organic matter, from ranch in the Guadarrama mountain area (Madrid, Spain). Our aim was to improve the pasture by means of phosphobacteri um (B. cereus fluorencens) inoculation. Firstly some corrections to th e soil were carried out (pH, o.m., N/K and P). The clear conclusion ob tained was that this soil has no need of phosphoric fertilizer if phos phobacterium are inoculated since the result is an increase in pasture fresh weight and in the nutrition element levels.