Evaluation of Fungicides against Anthracnose Disease in Green Gram under in vitro and Pot Conditions

Background: Green gram (Vigna radiata L.) is one of the most important legume crops which is a rich source of protein (24.5%), fat (1.3%), Minerals (3.5%) and Carbohydrates (56.7%). Anthracnose disease of green gram caused by Colletotrichum truncatum is a major fungal disease causing serious loss of 24 to 67% both qualitative and quantitatively. Fungicide-resistant strains can develop due to excessive use of fungicides with similar actions. To avoid this, it is necessary to use fungicides having novel modes of action to lessen selection pressure, develop resistance and successfully manage infections over the long term. The current study aimed to test the efficacy of some fungicides against anthracnose of green gram under in vitro and pot conditions. Methods: A total of 10 different fungicides were tested at three different concentrations (0.10, 0.15 and 0.20%) against the pathogen by poisoned food technique and a pot culture experiment was also conducted in protected structure (poly house) on green gram susceptible variety ‘MH-421’ against this disease during Kharif season of 2023 at Hi-Tech Nursery, S.K. Rajasthan Agricultural University Bikaner, Rajasthan, India. Result: Among 11 treatments of fungicides, propiconazole at all concentrations, tebuconazole at 0.15 and 0.20% and carbendazim+ mancozeb at 0.20% gave 100% inhibition of growth of the pathogen. In the pot culture experiment, the least disease incidence was recorded in the treatment sprayed with propiconazole (0.10%) among tested fungicides.