Vol.4 : Number 5
Evaluation of phosphate solubilizing bacteria isolated from rhizospheric soil of parthenium plant

Author(s): Rajesh Kumar Singh, SK Yana


The export oriented agricultural and horticultural crops depends on the export of residue free produce and has created a

great potential and demand for the incorporation of biopesticides in crop protection. There is several fungicides which are

causing harm to soil, plant and environment. So, we focus on isolation of such bacteria which having antagonistic property

as well as phosphate solubilizing ability for growth promotion. We isolated approximately 54 isolates which having

phosphate solubilizing ability from different regions of eastern and western regions of Uttar Pradesh from rhizospheric soil

of parthenium plant. Among these bacteria we screened for antagonism test against TLB, and 4 bacteria were found which

were showing strong antagonism against TLB. Biochemical test were also performed of these bacteria, for Indole acetic

production. Among them G1, G7, G13 and G17 produce Indole acetic acid 180μg/ml, 200μg/ml, 220μg/ml and 330μg/ml

respectively. These strains have been selected for further studies towards application as BCAs against TLB as well as good

plant growth promoting activity. So in this way we can use this strain in future for development of antifumgal chemical

which used as a antifungal against TLB and ecofriendly.

Key Words: Antagonism, Biopesticides, BCA, Fungicide, Phosphate bacteria, Parthenium, Rhizospheric, TLB


Country: India