Self Life Stability of Antagonist S. Griseus in Talc Based
involvement of other antibiotics produced by S. griseus
and also the better multiplication of S. griseus on the soil.
DISCUSSION
Tomato cultivation was affected by a number
of diseases. Among them, the wilt disease caused
by F. oxysporum is a serious disease in major
tomato-growing areas. A new approach in crop protection
to reduce the disease damage level and several PGPR
strains and microorganisms were reported in many crops
for the control of fungal pathogens [8]. The talc-based
formulation has been reported for the management of
several crop diseases in India [15]. Similarly the
incorporation of chitin amendment in talc formulation and
the efficacy in fungal disease management have been
reported by many workers.
Talc-based formulations of plant growth
promoting rhizobacteria Pseudomonas fluorescens (Pf1)
and Bacillus subtilis either single or mixed along with or
without chitin and neem amendments were developed and
tested under greenhouse and field conditions was studied
by Bharathi et al., [8]. The PGPR mixed bioformulation
Pf1+B. subtilis+neem+chitin was found to be the best
for reducing the fruit rot incidence besides increasing
the plant growth and yield parameters under both
greenhouse and field conditions. Talk based formulation
of P. fluorescens was found to be effective as seed
treatment and foliar application in the control of rust and
leaf spots of groundnut was reported by Meena et al., [9].
Radja et al., [16] tested the efficacy of P. fluorescens (Pf1)
and P. fluorescens (FP7) talc-based formulation with and
Formulation: In talc formulation, S. griseus showed stable
up to 105th day at 30°C. Vidhyasekaran et al., [9] reported
that talc powder formulation of P. fluorescens with a
longer self life would be beneficial. Like wise the initial
density of S. lydicus WYEC108 spores in the well-mixed
formulation was 109 cfu/g. After 2.5 months of storage at
room temperature (28°C), the density of WYEC108 in the
formulation had declined to 108 CFU/g. Over an additional
3 months, this level of viability was maintained. This
study was showed by Walter and Don [17]. S. griseus
formulation was prepared using a mixture of soil:sago
hampas (5%, w/ w).