Upasi Tea Research Foundation
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THORNY STEM BLIGHT The disease is caused by the fungus Tunstallia aculeata. Studies were conducted on the nature of the pathogen, pathogen city, sporulation, disease development and control measures. The spread of the disease was higher when the pruning timing coincided with the sporulation period. There was also a direct correlation between root carbohydrate reserves and disease development. An integrated management strategy combining replanting with resistant genotype, cultural control, chemical and biological control measures was found ideal.

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 strain 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.


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.
   
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