ISOLASI DAN IDENTIFIKASI BAKTERI PELARUT FOSFAT POTENSIAL PADA TANAH KONVENSIONAL DAN TANAH ORGANIK

Phosphate solubilizing bacteria are decomposer bacteria functioning as major role in soil enrichment. That is because it is able to perform phosphate dissolution mechanism by excreting low particles weight of organic acids. The bacteria utilize simple carbon compounds (root exudatesofplantsandthe restof theplant).Phosphate solubilizing bacteria activity will be high at a temperature of 300C - 400C. This study aims to isolate and identify thephosphate solubilizingbacteria in theconventional soil and organic soil originated from Japan. Conventional and organic soil sample are sent from Collage Of Agricultural Ibaraki University in Japan. The Isolation of pathogenic bacteria is performed by the dilution method (platting method). Results of isolation of bacteria lisolates obtained 2 on ground phosphate conventional solubilizing (TKO1 andTKO2) and 4 isolates of bacteria ons oilorganicsolubilizingphosphate(TOR1, TOR2, TOR3andTOR4). Bacteria lisolates TKO2 highest phosphate solubilizing. Based on the identificati on results using the Microgen ™ Kit GNA + B - ID System and Determine Bergeys 's Manual of Biology (Garrity et al., 2006)TKO2 isolate is identified as Yersinia sp. Keywords : Phosphate solubilizing bacteria, conventional soil, organic soil, Yersinia sp.