EVALUATION OF DIFFERENT PACKAGING MATERIALS FOR MICROBIAL INOCULANTS
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Date
2015-07-10
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
An investigation was carried out to study the influence of packaging materials
on survival of microbial inoculants. Survival of Bradyrhizobium japonicum, Bacillus
megaterium and Pseudomonas fluorescens in lignite and talc formulations were
monitored upto six month of storage in different packaging materials such as
aluminium and polythene bag. Lignite based B. japonicum and B. megaterium
recorded highest viable cells compared to talc based inoculants. B. japonicum and B.
megaterium packed in polythene bag supported 100 per cent cells from the beginning
to an end of storage period. Good survival of B. japonicum packed in aluminium
cover was noticed in case of lignite formulation. In case of talc formulation, polythene
bag showed better population of B. japonicum. Polythene bag supported better
survival of B. megaterium in both lignite and talc formulation. Maximum viable cells
of P. fluorescens was recorded in talc formulation compared to lignite formulation.
Survival of P. fluorescens was best in aluminium cover compared to polythene bag.
The aluminium cover was the suitable for packaging of lignite or talc based P.
fluorescens. It is evident from this investigation, lignite or talc can be a carrier
material for the survival of microbial inoculants. Regarding to packaging materials,
polythene bag was the best packaging material for Bradyrhizobium japonicum and
Bacillus megaterium. Aluminium cover was the best for Pseudomonas fluorescens.
However, both packaging materials were not harmful for survival of microorganisms
and maintain good viable cells as per the BIS standards up to 180 days of storage.
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