ON FIELD MANAGEMENT OF ROOT-KNOT INFESTATION IN TOMATO AND BRINJAL THROUGH BIOFORMULATIONS OF PAECILOMYCES LILACINUS AND POCHONIA CHLAMYDOSPORIA

Abstract

Bioformulations like wettable powder, aqueous liquid and granules of Paecilomyces lilacinus (Nematofree) and Pochonia chlamydosporia (Nematofree+) were evaluated against root-knot infestation in tomato and brinjal at two farmer’s field. The application of the bio-nematicides were carried out at transplanting stage of the crops as root dipping (@ 10gm or ml/ 1L of water) and soil treatment (@5Kg or L/acre incorporated with FYM).The root-knot infestation data was recorded by observing the foliage symptoms of root-knot infestation i.e., stunting, premature wilting, and leaf chlorosis. All the six treatments i.e., T1: Nematofree (WP), T2: Nematofree (Liquid), T3: Nematofree (Granule), T4: Nematofree+ (WP), T5: Nematofree+ (Liquid), T6: Nematofree+(Granule) showed significant reduction in the root-knot nematode infestation in both tomato crop (90 to 96%) and brinjal (75 to 86%). Among all formulation types, the wettable powder formulation of both bio-nematicides provided promising result in reduction of root-knot infestation symptoms. Nematofree+ was found to be more effective than Nematofree in controlling the infestation. Application of both the bionematicides also increased the final yield in case of both tomato and brinjal.