IN VITRO ANTIMICROBIAL POTENCY OF PLANT EXTRACTS AGAINST SAROCLADIUM ORYZAE

Studies were conducted to determine the effect ten plant extracts for the in vitro growth of Sarocladium oryzae cause of rice sheath rot disease.The results indicate that Eucalytpus globules leaf extract (10%) recorded the minimum mycelial growth (19.03mm) and maximum per cent reduction of mycelial growth of pathogen (78.85%) over control.This was followed by Allium cepae and Lantana camera extract (27.24 mm, 69.73%; 30.57mm, 66.03%).The lowest per cent inhibition of pathogen was observed by Solanum nigrum extract (49.95mm, 44.50%).The results also indicate that, extracts from E. globules exhibited highest seed germination, shoot length, root length and vigour index of rice seedlings by roll towel method.These plant extracts can thus be used for rice seed treatment to manage rice sheath rot disease.