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BIOFERTILIZERS   The division is actively engaged in biofertilizer research. Nitrogen fixing Azospirillum and phosphate solubilising bacteria were isolated from tea soils of southern India and region specific potential strains were selected based on laboratory, greenhouse, as well as field experiments. A technology for their mass multiplication has been developed. Experiments proved that composted coir pith is a superior carrier material compared to the commonly used lignite. The efficient strains have been commercialized and available in the market under the brand name Biodyne – N (Azospirillum) and Biodyne – P (Phosphate solublizing bacteria). At present the division is actively working on a DBT funded project on “Integrated Nutrient management in Tea”. Another project funded by Tea Board entitled “Integrated Pest and Disease Management in Tea” is also in progress.
MICROBIOLOGY
Enumeration of microflora (Total Viable Count, Yeast and Mould) in made tea is regularly carried out. Now the   division is also undertaking analysis of made tea for total coliforms, E.coli and Salmonella. Apart from this, quality check of bioformulations (biocontrol agents and biofertilizers) is regularly undertaken. Studies in relation to factory hygiene are underway. Aerospora in factory environment is also being studied.
The department has developed a user friendly kit for the quantitative analysis of microbial load present in the factory machinery and the kit is available for sale. The department is doing extensive research on PGPRS (Plant Growth Promoting Rhizobacteria) associated with tea. Efficiency strains have been isolated from tea soil and these strains are having the potential of promoting growth or tea plants in the nursery and imparting systemic reduced resistance to plants against disease.
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