Evaluation of phosphate solubilizing bacteria isolated from Rhizospheric soil of parthenium plant Rajesh Kumar Singh, SK Yana

Evaluation of phosphate solubilizing bacteria isolated from rhizospheric soil of parthenium plant


 Rajesh Kumar Singh1, SK Yana2

1Central Horticultural Plain Research Institute (ICAR) Lucknow

2Department of Plant Biochemistry, BHU, Varanasi (UP) India


Received: 22 September 2015                                                          Revised Accepted: 03 November 2015




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