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

Abstract

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.