Abstract

                                Ergosterol biosynthesis inhibitor – propiconazole was compatible with bacterial biocontrol agents viz., Pseudomonas and Bacillus under in vitro conditions. The compatibility assessed using propiconazole amended nutrient and King’s B broth at different concentration (250, 500,750, 860 and 1000 ppm) by turbidimetic method and it was observed that the bacterial growthwas not affected by propiconazole even at the ighest concentration of 1000 ppm. The turbidityincreased with increase in incubation time as compared to control. Further, this fungicide was physically and biologically compatible with three insecticides namely chlorpyriphos,dicofol and methyl-demeton at their respective ecommended dosage under laboratory and glasshouse conditions.

Key words : Ergosterol biosynthesis inhibition, propiconazole, Pseudomonas, Bacillus and insecticides