Evaluation of phosphate solubilizing bacteria role with biochar on the growth of wheat
Paper Details
Evaluation of phosphate solubilizing bacteria role with biochar on the growth of wheat
Abstract
Deficiency of phosphorus (P)in calcareous soils significantly reduces plant growth and yield. High pH and more Ca availability are major hurdles in the way of phosphorus mobilization in thesoil. The ability of phosphate solubilizing bacteria (PSB) to solubilize fixed P for plant uptake is a documented fact. As far as the co-application of PSB and biochar (BioC) for P mobilization is concerned, there are yet few investigations. Therefore, it was hypothesized that the co-application of PSB and BioC might be more effective and novel approach to make P readily available for plants. Six PSB isolates (M1, M2, M3, M4, M5, M6)were isolated from the rhizosphere of Zea mays, Sorghum bicolor and Oryza sativa on Pikovskaya’s medium. Freshly prepared inocula of the PSB and wheat straw based BioC were treated to soil and seeds were sown in axenic conditions. It was observed that co-application of PSB and BioC significantly enhanced the growth attributes in wheat seedlings. Treatments BioC+M3 and BioC+M5 performed best for the improvement in germination, and seedling fresh weight in P deficient soil. However, more P solubilization in soil and higher uptake in seedlings was recorded for M3+BioC and M5+BioC. It can be inferred from the results that the co-application of PSB and BioCis anefficient approach to enhance the bioavailability of P to wheat in P deficient, alkaline calcareous and low organic matter soils as compared to PSB inoculation or BioC application alone.
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