Laboratory evaluation of fungicides and plant extracts against different strains of Colletotrichum falcatum the cause of red rot of sugarcane

Red rot incited by colletotrichum falcatum (went.) is the most destructive disease of sugarcane in punjab and sindh provinces of pakistan. laboratory studies were conducted using crd with three replications to study the efficacy of six fungicides viz. captan,carbendazim,copper oxichloride,mancozeb,tilt,topsin-m and plant extracts allium sativum,azadirachta indica,datura stramonium. eucalyptus camaldulensis. moringa oleifera and zingiber officinale against red rot of sugarcane. maximum inhibition (95%) of the strain-234 was expressed by mancozeb at 3% concentration followed by tilt,carbendazim,topsin-m and copper oxichloride and minimum inhibition was observed by captan (37.3%) at 1% concentration as compared to other strains. least inhibition (32.2%) of strain-234 was exhibited by the extract of eucalyptus camaldulensis at s/25 concentration and maximum growth was suppressed by azadirachta indica (89.9%) at s (standard dose) concentration followed by datura stramonium,moringa oleifera,allium sativum and zingiber officinale respectively. the present study suggested that growth of the pathogen is effected by different concentrations of fungicides and plant extracts may play an important role to manage this disease. © 2016,university of agriculture. all rights reserved.