10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 1 2015 (January - March) In the present study the pyrazole have been synthesized by the reaction of chalcone dibromide with phenyl hydrazine hydrochloride to afford the yellow solids of pyrazoles. The synthesized compounds have been confirmed by their chemical, analytical and spectral study and these synthesized compounds have been screened for their antimicrobial activity against some kharip plant pathogens viz lessThan i greaterThan Xanthomonas Campestris, Alternari Macrospora, Fusarium Spp.Pseudomonas syringae. lessThan /i greaterThan V. D. MANE, D. T. MAHAJAN AND P. R. RAJPUT Pyrazole, chalconedibromide, antimicrobial activity, plant pathogen, chalcone. 213-218