Abstract: Stored grains of five varieties of rice (Oryza sativa L.) viz. Moirangphou khongangbi, Maipakphou, Chakkhao poireiton, RCM -9 and Daramphou were studied to investigate the effect of some plant extracts and cowdung mixed oil on the occurrence of seed-borne mycoflora using blotter technique. There were 19.73%,17.89%,13.12%,17.29% and 21.89% mycoflora found associated with the seeds of Moirangphou khongangbi, Maipak phou, Chakkhao poireiton, RCM-9 & Daram phou respectively. Ten fungal species namely Fusarium moniliforme, Fusarium sp., Alternaria sp.,Helminthosporium sp., Curvularia sp., Pithomyces, Aspergillus sp.,Penicillium sp., Nigrospora sp., Rhizoctonia sp were isolated from different test rice varieties.