INTRODUCTION Many heterotrophic bacteria and fungi efficiently solubilize and fungi efficiently solubilize insoluble phosphate of rock phosphate insoluble phosphate of rock phosphate groups when added to the soil. These groups when added to the soil. These organisms secrete organic acids and organisms secrete organic acids and enzymes that solubilize insoluble enzymes that solubilize insoluble phosphorus which becomes then available phosphorus which becomes then available for plant absorption. for plant absorption.
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INTRODUCTION Many heterotrophic bacteria and fungi efficiently solubilize insoluble phosphate of rock phosphate groups when added to the soil. These organisms.
Phosphate Solubilizing Biofertilizers as component of INM Many bacteria belonging to Bacillus, Pseudomonas Flavobacterium Micrococcus Streptomyces and fungi belonging to Aspergillus Penicillium and Trichoderma efficiently solubilize insoluble phosphate of rock phosphate groups. These organisms secrete organic acids and enzymes that Solubilize insoluble phosphorus added to the soil, which becomes then available for plant absorption
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INTRODUCTION
Many heterotrophic bacteria and fungi and fungi
efficiently solubilize insoluble phosphate of rock efficiently solubilize insoluble phosphate of rock
phosphate groups when added to the soil. These phosphate groups when added to the soil. These
organisms secrete organic acids and enzymes that organisms secrete organic acids and enzymes that
solubilize insoluble phosphorus which becomes then solubilize insoluble phosphorus which becomes then
available for plant absorption.available for plant absorption.
Phosphate Solubilizing Biofertilizers as component of INM
Many bacteria belonging to Bacillus, Pseudomonas Flavobacterium Micrococcus Streptomyces and fungi belonging to Aspergillus Penicillium and Trichoderma efficiently solubilize insoluble phosphate of rock phosphate groups. These organisms secrete organic acids and enzymes that Solubilize insoluble phosphorus added to the soil, which becomes then available for plant absorption
Phosphate Solubilizing Bacteria
Spore Rod shape
Rod shape FlagellaPigmentation
Colony
BACILLUS
PSEUDOMONAS
Phosphate Solubilizing Fungi
Aspergillus awamori
Aspergillus conidia Aspergillus colony
Aspergillus fruiting body
Penicillium Trichoderma viridi
Mechanism of Phosphorus solubilization
Organisms are Pseudomonas, Bacillus, Aspergillus Penicillium, Trichoderma Bacteria and fungi secrete organic acids and EnzymesOrganic acids and Enzymes dissolve insoluble phosphorus bound with soil and organic matter
Selection Procedure
Bacteria / fungi in specified media containing insoluble phosphate
Incubate and observe the clearing zone around colonies
Quantify the phosphorus dissolved by specified organism Select efficient culture based on above criteria