ACTIVITY OF PHOSPHATE SOLUBILIZING RHIZOBACTERIA ISOLATES WITH BIOCHAR CARRIER IN DIFFERENT STORAGE PERIOD

Eko Hary Pudjiwati, Nunuk Purwati

Abstract


Phosphate Solubilizing Bacteria is one way to increase the availability of P element in the soil. The application of phosphate solubilizing bacteria requires a carrier material that can maintain the viability of the inoculum and its metabolic activity within a certain period of time. This study aims to determine the activity of native phosphate solubilizing rhizobacterial isolates on biochar carriers and different storage times. The experimental design used was a completely randomized design with two factors and two replications. The first factor is the type of biochar, namely M1=coconut shell biochar and M2= palm shell biochar. The second factor consisted of R0 = without phosphate solubilizing bacteria isolates, R1 = BP1 isolates, R2 = BP2 isolates, and R3 = BP1 + BP2 isolates. The results showed that biochar can be used as a carrier for phosphate-dissolving rhizobacteria without losing its activity in dissolving phosphate. Coconut shell and palm shell biochar did not give a significant difference in the phosphate solubility activity of isolates BP1 and BP2, as well as the BP1+BP2 consortium until the shelf life was 90 days. Phosphate Dissolving Index values range from 2.25 to 2.88 in the medium category

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References


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DOI: https://doi.org/10.35334/iciksa.v0i0.180

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Jurnal J-Pen Borneo:Jurnal Ilmu Pertanian

Faculty of Agriculture, University Of Borneo Tarakan

Tarakan city, North Borneo Province, Indonesia