Field efficacy of commercial botanicals and bioagents against yellow mosaic disease of mungbean

AMRUTA P. BARIGAL; S. I. HARLAPUR; GURUPADA B. BALOL; G. U. PREMA; SUMA MOGALI

AMRUTA P. BARIGAL Department of Plant Pathology, College of Agriculture, Dharwad, University of Agricultural Sciences, Dharwad - 580 005, India
S. I. HARLAPUR Department of Plant Pathology, College of Agriculture, Dharwad, University of Agricultural Sciences, Dharwad - 580 005, India
GURUPADA B. BALOL Department of Plant Pathology, College of Agriculture, Dharwad, University of Agricultural Sciences, Dharwad - 580 005, India
G. U. PREMA Department of Plant Pathology, College of Agriculture, Dharwad, University of Agricultural Sciences, Dharwad - 580 005, India
SUMA MOGALI Department of Genetics and Plant Breeding, College of Agriculture, Hanamanamatti, University of Agricultural Sciences, Dharwad - 580 005, India

Keywords: Azadirichtin, Botanicals, Bioagents, Disease incidence, Yield loss

Abstract

Yellow Mosaic Disease (YMD) caused by Mungbean yellow mosaic virus (MYMV) is of key importance especially in South and Southeast Asia. Yield loss due to MYMV ranges from 10- 100 per cent and may even kill the infected plant at vegetative stage. Hence attempt was made to evaluate botanicals and bioagents against MYMV. The experiment was laid out using Randomized Complete Block Design with 11 treatments replicated thrice, Among the different commercial botanicals evaluated for MYMV management, seed treatment with crude neem oil @ 5 ml/kg of seeds followed by foliar spray with multineem (Azadirichtin 0.03%) @ 10 ml/l showed least disease incidence of 7.66 per cent and disease severity of 6.55 per cent with higher seed yield of 7.00 q/ha and Benefit : Cost ratio of 2.57, which was next to standard check treatment (T11). Highest per cent disease incidence of 75.83 per cent and disease severity of 35.85 per cent was observed in treatment with no seed treatment and no spray, which exhibited least seed yield of 2.85 q/ha and B:C ratio of 1.03. Hence commercial neem formulations can be used as effective and eco-friendly option for MYMV management.