STUDY ON SEEDLING DISEASES OF JACKFRUIT (Artocarpus heterophyllus L.) IN SELECTED AREA OF BANGLADESH AND THEIR MANAGEMENT

Abstract

Experiments were carried out during the period of July, 2010 to October, 2012 to study the status of seedling diseases of jackfruit and the effect of weather parameters on the incidence and severity of seedling diseases in different major growing areas of Bangladesh with development of an environment friendly disease management practice. Important plant pathogen Phyllosticta artocarpina and Pseudomonas syringae pv. syringae. were detected and identified. The incidence and severity of leaf spot and leaf blight of jackfruit seedlings were differed location to location and significant variations were observed. Correlation regression study revealed that the development of leaf spot and leaf blight diseases were correlated with temperature and rainfall but least or no effect of humidity was observed on development of these two diseases. Comparative effectiveness of BAU-biofungicide either alone or in combination with two fungicides viz. Cupravit and Bavistin were evaluated on jackfruit in the nursery. Among the treatments applied, Trichoderma harzianum based BAU-Biofungicide showed promising result in controlling leaf spot and leaf blight disease. BAU-Biofungicide, as an alternate to chemicals, can successfully be used as eco-friendly option.