ASSESSMENT OF PHYTOEXTRACTS AND CHEMICALS AGAINST Colletotrichum Falcatum CAUSING RED ROT OF SUGARCANE

Abstract

Red rot is one of the most alarming threat to successful production of sugarcane crop. It is caused by Colletotrichum falcatum which is responsible for significant yield losses along with 29-83â„… reduction in cane weight and reduces 31-75â„… sugar contents. Different management strategies are used to manage red rot of sugarcane. In current study, five chemicals (Benomyl, Captan, Score, Cabriotop and Ridomil), five plant extracts (Curcuma longa, Piper longum, Jatropha curcas, Citrullus colocynthis and Trigonella foenum-graecum) and different combinations of these (C.colocynthis + Ridomil, C.colocynthis + Benomyl, Benomyl + Ridomil, C.colocynthis + Jatropha curcas, C.colocynthis+ Benomyl and Jatropha curcas + Ridomil) were evaluated at three different concentrations. Completely randomized design (CRD) was used by maintaining three replications. Results showed that most effective fungicide was Benomyl while Ridomil showed minimum growth inhibition. From plant extracts, Curcuma longa expressed minimum fungal growth followed by Piper longum, Jatropha curcas, Citrullus colocynthis and Trigonella foenum-graecum. Combination of C.colocynthis +Ridomil exhibit maximum fungal growth and showed best results. In future, Benomyl and Curcuma longa alone and in combinations can be used for the management of red rot disease of sugarcane.