Evaluation of Fungicides, Botanicals and Bio-control Agents against Sclerotinia Rot of Cauliflower caused by Sclerotinia sclerotiorum (Lib.) de Bary under in-vitro Condition

Abstract

The present investigation entitled “Evaluation of Fungicides, Botanicals and Bio-control agents against Sclerotinia rot of Cauliflower caused by Sclerotinia sclerotiorum (Lib.) de Bary under in-vitro condition” was carried out at Veer Chandra Singh Garhwali, Uttarakhand University of Horticulture and Forestry, Bharsar, Pauri Garhwal during year 2021– 22. Cauliflower is important vegetable crop rich in Vitamin A, C, ascorbic acid, potassium, sodium, iron, copper and manganese. Sclerotinia rot is very destructive disease in cauliflower which cause serious problem during rainy and humid climate. The result obtained in the present research study maximum mycelium growth of pathogen was observed on potato dextrose agar media (88.75 mm) at 7th day and the maximum mycelium growth of pathogen was observed at 200C (90.00 mm) at 7th day. The pH 5 shown maximum dry weight of mycelial growth (195.25 mg) at 14th. In vitro effect of different botanicals, fungicides and biocontrol agents were tested against the Sclerotinia sclerotiorum. Result revealed that Garlic was effectively inhibited 89.24% mycelial growth of the test pathogen at 15% concentration. The fungicides Carbendazim and Hexaconazole inhibited 100% mycelial growth of the test pathogen at 50 ppm and Propiconazole inhibited 100% mycelial growth of the test pathogen at 200 ppm. The biocontrol agent Trichoderma viride and Trichoderma harzianum were effectively inhibited 72.21 and 63.11% mycelial growth of the test pathogen.