Effect of some antagonistic fungi and chemicals on red rot disease development in plant and ratoon crops of sugarcane.
Results are presented of studies in Karnal (Haryana) and Hoshiarpur (Punjab), India, on the potential of some antagonistic fungi and chemicals in controlling the secondary spread of Colletotrichum falcatum [Glomerella tucumanensis] infection in standing sugarcane crop. Spraying of Chaetomium globosum, Trichoderma harzianum, T. viride and Bavistin [carbendazim] prior to the application of Colletotrichum falcatum significantly decreased the secondary spread of the red rot disease and showed improvement in cane yield. Sett treatment of naturally infected seed setts with Chaetomium globosum improved the germination compared to the untreated infected setts. Sett treatment with Chaetomium globosum decreased the disease incidence and increased the cane yield in comparison to the untreated naturally infected setts. The result obtained in the demonstration with Chaetomium globosum application in plant and ratoon crops of sugarcane cv. Co 7717 indicated 10% improvement in germination in plant crop and sprouting of stools (5.9%) in ratoon crop compared to the untreated infected treatment. Sett and foliar application in plant and foliar application in ratoon crop with Chaetomium globosum decreased the red rot incidence and improved the cane, yield and quality parameters.