The experiments were carried out to test the aqueous extracts of twenty plants for their antifungal activity against Aspergillus oryzae caused rice discolouration. Tested results showed a differential activity of the plant extracts against the mycelium growth. The combined leaf extracts of Lawsonia alba and Nicotiana tabocum in general showed a strong enhancement in activities over the individual leaf extracts of Lawsonia alba and Nicotiana tabocum against the mycelium growth. The leaf extracts of Nicotiana tabocum, Lantana macrophylae and Ocimum basilicum showed appreciable inhibitory effect against the tested fungi.