MANAGEMENT OF FOOT AND ROOT ROT OF EGGPLANT CAUSED BY Sclerotium rolfsii

Abstract

Experiments were conducted at the Plant Pathology Laboratory and Farm of Sher-e-Bangla Agricultural University, Dhaka during November 2013 to May 2014 to find out the effective IDM components against foot and root rot disease of eggplant. The field experiment was carried out in Randomized Complete Block design with three replications. In laboratory condition, the highest reduction of mycelium growth (74.44 %) and sclerotia formation (77.13 %) was recorded in Bavistin 50 WP followed by Topgan 50 WP (68.88 %, 76.03 %) and Ridomil Gold (64.07, 59.16 %), respectively. In net house experiment, application of Bavistin 50 WP showed profound effects in reducing the disease incidence and severity (stem lesion area) with increasing yield compared to other treatments. Application of fungicides, plant extracts, organic manure and bio-agent also showed variation in reduction of foot and root rot disease caused by Sclerotium rolfsii and influenced yield and yield contributing characters of eggplant. Among the treatments, Bavistin 50 WP appeared to be the best in controlling the disease. In field experiment, significantly the higher yield (25.17 ton/ha) was found under the treatment Bavistin 50 WP followed by Topgan (22.87 ton/ha) and Ridomil gold MZ 68 WG (22.23 ton/ha). The lowest disease incidence (0.710 %) was recored in case of Bavistin 50 WP (0.71 %) which was statistically similar to Topgan 50 WP (1.963 %) and Ridomil Gold (1.963 %) .