Abstract— Soil microorganism plays an important role in regulating the levels of carbon, nitrogen, phosphorus and sulphur at the rhizosphere. Solubilization of macronutrient is an important aspect in plant growth and development research. Phosphorus is one of the vital nutrient required for optimum growth of plant. Phosphate Solubilizing Bacteria (PSB) plays an important role in increasing the phosphate uptake by the plants. Pikovskaya medium containing TCP or tricalcium phosphate helps in isolation of PSB from soil sample. Isolated strains were tested and screened by Halo zone formation and pH test. The selected strains showing marked decrease in pH and clear zone formation was selected for field trial. The objective of this study was to ascertain that PSBs isolated from the soil sample can be used as biofertilizer. Application of PSBs with a carrier mixed with maize seeds in the field of study and compared against a control field and against commercially available fertilizer showed that PSBs can improve the quality of soil and in turn improved the growth and development of the plants.
Keywords— Biofertilizer, Phosphate Solubilizing Bacteria, chemical fertilizer, plant growth, soil fertility, field trial.
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