Isolation, screening and characterization of zinc solubilizing microorganisms from direct sown paddy (Oryza sativa L.) Rhizospheric soils of Andhra Pradesh

In the present study collected twenty (20) direct sown paddy rhizosphere soil samples from four districts of Andhra Pradesh and recorded their geographical position of collected soil samples. From that thirty two (32) Zinc Solubilizing Bacteria (ZnSB) isolated by using zinc phosphate [Zn3(PO4)2] as a insoluble source of zinc in the trismineral salts media. Zinc solubilizing isolates coded based on their soil sample collected geographical position, recorded the morphological, cultural characteristics of ZnSB. ZnSB Isolates screened based on their zinc solubilization efficiency both qualitatively and quantitatively.