|Department of Agricultural Microbiology and Bioenergy, College of Agriculture,
Prof Jaya Shankar Telangana State Agricultural University, Rajendranagar, Hyderabad - 500 030, Telangana, India
*Bio-fertilizer Laboratory, Agricultural Research Station, Amaravathi, Guntur, Andhra Pradesh, India
|Sixteen pure cultures of plant growth promoting rhizobacterial isolates collected from different resource laboratories of Andhra Pradesh. These isolates were characterized with morphological, cultural and biochemical characterization. In present study attempts were also made to assess the screening and characterization of those isolates with multiple beneficial properties like biocontrol potential against plant pathogens, nitrogen fixation, mineral phosphate solubilization, production of plant growth promoting substances and to know the compatibility of local PGPR isolates against the commonly used agrochemicals like fungicides (metalaxyl, ziram, propiconazole and carbendazim), insecticides (chloripyriphos, dimethoate, imidachloprid and thiodicarb) and herbicides (atrazine, butachlor, propaquizafop and pendimethalin) at their recommended dosages under in vitro condition. Among sixteen PGPR isolates only PGP-1, PGP-9, PGP-13, PGP-14, PGP-15 isolates exhibited good compatibility (0 mm inhibition) with fungicides with recommended dosages, the isolates PGP-1, PGP-9, PGP-11, PGP-12, PGP-14, PGP-15 were not affected by any insecticides, indication of high compatibility with insecticides at recommended dosage and seven isolates viz PGP-1, PGP-2, PGP-9, PGP-11, PGP-13, PGP-14, PGP-15, had shown high compatibility (0mm inhibition zone) with all herbicides.