MANAGEMENT OF EARLY BLIGHT OF TOMATO THROUGH SELECTED BOTANICALS AND CHEMICAL FUNGICIDES

Abstract

A study was carried out at the Department of Plant Pathology, Sher-e-Bangla Agricultural University (SAU), Dhaka-1207, Bangladesh during the period from November 2015 to May 2016 in order to find out the management options of early blight of tomato through selected botanicals and chemical fungicides. Eight treatments viz. T 1 (Foliar spray of Bavistin 50 WP @ 1 g/liter), T (Foliar spray of Dithane M-45 @ 4.5 g/liter), T 3 2 (Foliar spray of Rovral 50 WP @ 2 g/liter), T

(Foliar spray of Topgun @ 7 g/liter), T (Foliar spray of Neem leaf extract @ 1:3 w/v), T 6 5 (Foliar spray of Marigold leaf extract @ 1:6 w/v), T (Foliar spray of Papaya leaf extract @ 1:3 w/v) and T 8 7 (Control) were used for the present study. BARI released variety BARI tomato 2 (Ratan) was used as planting material. Under the present study, among all the fungicides, T (Foliar spray of Rovral 50 WP @ 2 g/liter) showed the best promising result in terms of lowest disease

3 4 incidence (9.63%) with highest % of reduction (86.75%) over control. In terms of growth and yield contributing parameters, The highest plant height (117.80 cm), number of branches plant -1 (13.80), Number of fruits plant -1 (36.67), Fruit yield plant -1 (1.12 kg) and Fruit yield ha -1 (65.33 t) were obtained from T (Foliar spray of Rovral 50 WP @ 2 g/liter) compared to all the treatments. Botanicals also provided promising results against early blight control of tomato. Among the tested botanicals T (Neem leaf extract @ 1:3 w/v) showed effective control against early blight of tomato followed by marigold extracts. 5 3