Abstract The survey on the Bipolaris leaf spot of pearl millet caused by Bipolarissetariae, was carried out to know the prevalence and distribution of the disease in ten districts of Rajasthan viz., Bikaner, Sri Ganganagar, Hanumangarh, Jodhpur, Jaipur, Sikar, Alwar, Bharatpur, Churu, Dausa and one district of Haryana i.e. Hisar during Kharif 2019 and Kharif 2020 at panicle emergence and flowering stages. In this present investigation, the data revealed that overall higher per cent disease incidence and per cent disease severity were observed in Sri Ganganagar (64.88 and 32.02) district followed by Hanumangarh (61.88 and 28.08), Alwar (59.25 and 25.21), Bharatpur (57.91 and 23.83), Jodhpur (56.40 and 22.02), Bikaner (55.24 and 20.25), Jaipur (53.15 and 18.29), Sikar (51.13 and 17.29), Dausa (49.49 and 15.52), Churu (47.37 and 13.09) and Hisar (45.38 and 11.26) districts. The deshi/ local varieties were found to be more susceptible to infection of B.setariae (26.12) as compared to Raj-171 (23.83), MPMH-17 (20.91) and HHB-67 (13.29) improved varieties. The maximum per cent disease severity was found in crops grown in clay soil (22.30) followed by loamy (21.25) and sandy (20.82) and other types of soil whereas results in crops grown in different system showed that the maximum disease severity () was found in mustard-based cropping pattern (23.92) followed by wheat-based cropping pattern (20.56) and chickpea-based cropping pattern (17.70). Results also indicated that the disease severity was maximum in flood irrigation method (22.38) followed by rainfed (21.49) and sprinkler (19.94) irrigation method. Pearl millet grown after wheat and mustard crop in sandy loam soil in Sri Ganganagar, Hanumangarh and Alwar under irrigated conditions was more prone to Bipolarissetariae. The pearl millet was more conducive to infection of B.setariae at panicle emergence and flowering stage in the month of September to October when, temperature start to declining.
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