Microbiology About Department


Considering the importance of Microbiology in Agriculture, it was started as one of the units of the Department of Biology during 1971 in TNAU and attained the status of separate department during 1979. This department was further bifurcated into Department of Bioenergy, Department of Environmental Sciences and Agricultural Biotechnology. Since its inception, the department is involved in research, teaching and extension activities. The department has released novel strains of biofertilizers for various crops and soils and is pioneer in deducing novel strains for K, Zn and Mn solubilization and hence is recognized as Nodal agency for bioinoculants in Tamil Nadu and authorized for quality check of agricultural bioinoculants.


  • Microbial inoculants for enhanced availability of nutrients
  • Development of antimicrobial compounds from microbial sources
  • Bioconversion of organic wastes, Biofuels and bioremediation
  • Microbial processes for value addition


  • Offering structured degree programmes in Agricultural Microbiology.
  • To develop technologies on biofertilizers for agriculture, horticulture and forestry
  • To develop scientific man power for development of Agricultural Microbiology
  • To provide periodical training on biofertilizers for Institutions and Government organizations
  • To provide analytical and advisory services on biofertilizers
  • To develop strategies for bioprospecting of microorganisms


  • Development of Biofertilizer technologies for Agriculture, Horticulture and Forestry
  • Establishment of culture collection centre for biofertilizers at National level

Our Strength

The Department of Agrl. Microbiology, Tamil Nadu Agricultural University is working on Biofertilizer research for the past 30 years and identifying new effective strains, new formulations, newer organisms as biofertilizer are in progress. The department has a separate well-equipped Biofertilizer Production and Quality Control unit, which serve as nodal agency for maintaining the quality control of Biofertilizers at state level. Following are some of the mile-stones of biofertilizer research by TNAU.

  • Soil and crop specific bioinoculants for major nutrients
  • Plant growth promoting phyllosphere inoculants
  • First commercial formulation of bioinoculants
  • Developed the quality control standards for bioinoculants
  • Microbial consortia and mixed bioinoculants
  • Multifaceted beneficial strains as bioinoculants
  • Liquid formulation of bioinoculants with longer shelf life
  • PPFM inoculant for drought mitigation in rice
  • Molecular markers for strain authentication
  • Bioinoculants for micronutrients
  • Simple commercial production technique for mycorrhizal bioinoculant
  • Distribution of quality strains of bioinoculants to government and private bioinoculant production agencies
  • Quality certification for commercial inoculants
  • Imparting hands on trainings to the entrepreneurs for quality inoculants production