Ngumah, Chima, Federal University of Technology Owerri, Department of Microbiology, P.M.B 1526 Owerri, Nigeria, Nigeria

• Vol 8 No 1 (2018): January-March 2018 - Research Articles
  Effects of cobalt and manganese on biomass and nitrogen fixation yields of a free-living nitrogen fixer - Azotobacter chroococcum
  Abstract  PDF