Evaluation of rhizobacterial strains against Bhendi Yellow Vein Mosaic Virus (BYVMV) Disease in Okra

摘要

As many as fifty rhizobacterial isolates from the culture collection of Departments of Agricultural Microbiology and Biotechnology, UAS Dharwad were screened against Bhendi Yellow Vein Mosaic Virus (BYVMV) disease in bhendi. The bioformulations of rhizobacteria applied to seed, soil and foliage significantly reduced the incidence of BYVMV, with a concomitant increase in plant growth and fruit yields under glasshouse condition. Based on the disease control, five isolates (B-40, 212(1), 212(4), 205(4)) and 218(1)) were selected and further evaluated for their ability to control BYVMV and promote growth in bhendi. These isolates controlled the disease ranging from 60 to 86.67 percent. The green house experiment revealed that Pseudomonas 218(1) was the most promising isolate which controlled BYVMV by 86.67 per cent. The mechanism of virus control was elucidated.