Compatibility of Bacterial Bioagent of Bacterial Leaf Blight of Rice with Chemical Pesticides, Commonly Used in Rice Cultivation

Present study was carried out to evaluate the compatibility of bacterial bioagent of bacterial leaf blight of rice (Pseudomonas fluorescens isolate 83) with different chemical pesticides (fungicides, antibiotic, insecticides and herbicides) which are commonly used in rice crop cultivation. Among fungicides, Tricyclazole and carbendazim was compatible with P. fluorescens isolate 83 at all four concentrations (2000, 1000, 500 and 250 ppm). However, propiconazole showed compatibility at 1000, 500 and 250 ppm and chlorothalonil at 500 and 250 ppm since these were statistically equal to check. Among insecticides, Profenophos was compatible with P. fluorescens isolate 83 at all four concentrations and Quinalphos was compatible at 500 and 250 ppm. Among herbicides, Butachlor and pendimethalin was compatible with P. fluorescens isolate at all four concentrations (2000, 1000, 500 and 250 ppm) whereas, anilophos exhibited compatibility only on lower concentrations (500 and 250 ppm). Present study indicated the possibilities of deployment of compatible bioagent formulations for management of bacterial leaf blight disease of rice. In the integrated disease management package, compatible pesticide can be incorporated along with bioagents for effective and sustainable disease management with lesser disturbance to agro-ecosystem.