In vitro Evaluation of Different Botanicals against the Colletotrichum gloeosporioides Penz and Sacc

Abstract

An in vitro experiment was carried out to evaluate the efficacy of botanical extract against mango anthracnose in the PG Research laboratory of the Department of Plant Pathology, N. M. College of Agriculture, Navsari Agricultural University, Navsari during 2023-24. The seven botanical treatments were tested at two concentrations (5% and 10%) to assess their potential against C. gloeosporioides under in vitro conditions by employing Complete Randomized Design. The efficacy was assessed based on percent growth inhibition (PGI) and mean colony diameter (mm) at two concentrations (5% and 10%). Among the botanicals tested, garlic extract exhibited the superior performance and achieving 39.63 percent and 45.93 percent mycelial growth inhibition at 5 and 10 percent concentrations, respectively. Novel plus ranked second in effectiveness, with inhibition rates of 32.63 percent and 40.74 percent at 5 and 10 percent concentration. Eucalyptus extract showed moderate efficacy, followed by ginger extract. The remaining botanical treatments demonstrated comparatively lower inhibitory effects against mango anthracnose (C. gloeosporioides). Under laboratory conditions, garlic extract showed the highest inhibition activity which indicating effective against C. gloeosporioides.