Coriander is one of the first spices to be used by mankind dates back to 5000BC. It is called as ‘Miraculous herb’ as all parts of the plant including seeds and leaves are used both as spice as well as herbal medicine. Among various diseases attacking coriander, stem gall disease caused by Protomyces macrospores Unger is the most devastating disease resulting 16-50 per cent yield loss. Considering the seriousness of this disease, present investigation was carried out on various aspects viz., germplasm screening and integrated disease management at T.C.A., Dholi campus of Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar during 2016-17 to 2018-19. Out of twenty coriander germplasm screened against the stem gall disease, only one germplasm (RD-23) was found moderately resistant. Under disease management, minimum PDI of 20.17 along with maximum yield of 1713.89 Kg/ha over control was recorded in treatment involving seed treatment @10g/Kg seed & soil application @50g/m²of Trichoderma asperellum+ foliar spray with a ready formulation containing Azoxystrobin 18.2%+ Difenoconazole 11.4% SC @0.1% at 45, 60 & 75 DAS. However, highest ICBR of 1:2.50 was realized in seed treatment with a fungicidal formulation containing Carboxin 37.5% + Thiram 37.5% WS @4g/Kg seed followed by foliar spray with a ready formulation containing Azoxystrobin 7.1%+ Propiconazole 11.9% SC @0.1% at 45, 60 & 75 DAS.

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