Biological control of seedling rot of sugarcane by Trichoderma and Pseudomonas flourescens

摘要

Some isolates of Trichoderma and P.flourescens were isolated from sugarcanes rhizosphere and found effective biocontrol agents against Pythium graminicola causes seedling rot of sugarcane under invitro conditions. However treatment with P.flourescenssignificantly reduced the seedling mortality besides better germination (40-50%), increased root and shoot length and seeling vigour than Trichoderma (15-20%) and fungicide application under mist chamber conditions. Association of identical bacterial colonies (10~(2-g)) were isolated from surface sterilized root samples 7 weeks after soil application.