INTEGRATED MANAGEMENT OF SEED BORNE PATHOGENIC FUNGI OF BRRI 29 RICE VARIETY

Abstract

A pot experiment was conducted with the single and combined doses of
fungicides, plant extracts and antagonist for the management of nine rice pathogens.
A total of 13 treatments including controls with or without inocula of the pathogen
were tested. Amongst all the treatments only T6 (Bavistin + Azadirachta indica +
Trichoderma harzianum) showed highest percentage of seed germination and seedling
vigor index of seeds inoculated with Alternaria alternata , Aspergillus flavus, Curvularia
lunata and Pestalotiopsis guepinii. Next to T6, T10 (Bavistin + Tall + Azadirachta indica +
Citrus medica) showed promising result against Drechslera oryzae, Fusarium moniliforme,
Microdochium oryzae and Sarocladium oryzae. T3 treatment (Azadirachta indica) showed
highest percentage of seed germination and seedling vigor index in case of seeds
inoculated with Fusarium solani. Amongst all treatments the integrated use of Bavistin,
A. indica and T. harzianum showed the better performance for growth reduction of test
pathogens and increased germination of seeds.