In-vitro Assessment of Native Plant Growth Promoting Rhizobacterial Isolates Against Diverse Fungal Phytopathogens

Although many Plant growth promoting rhizobacteria (PGPR) are used commercially, there is a need to explore more biocontrol agents combat various pathogens and sustain the productivity of crops. PGPRs inhabit rhizosphere region plant effective in managing pathogens. In this study, twenty-six PGPR isolates were screened in-vitro against fungal phytopathogens Bacteriological Laboratory, Department Pathology, Bidhan Chandra Krishi Vishwavidyalaya, Mohanpur, Nadia, West Bengal during 2021-22. All thirteen native Bacillus isolates, showed antagonistic activity Alternaria alternata, Colletotrichum gloeosporioides, Pestalotiopsis sp., Rhizoctonia solani Sclerotium rolfsii. Among fluorescent pseudomonads, all A. C. gloeosporioides eight, CK2LPP, CK2LP8, CK2LP12, GP2, GP8, G11SP37, K11SP4 S21SP14, R. solani, two, GP2 S. BRB 42, 56, PR 18, GP8 had highest under condition based on average mycelium inhibition per cent. SM 9 maximum zone phytopathogens.