African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5233

Full Length Research Paper

Comparative effectiveness of different isolates of Azospirillum on nitrogen fixation and yield and yield attributing characters of tomato in Chhattisgarh

  Tripathi, J.1, Singh, A. K.2, Tiwari, P.3 and Menaka M4
  1Sai Baba Adarsh Mahavidyalaya, Ambikapur, Chhattisgarh, India. 2RMD College of Agriculture and Research Station, Ajirma, Ambikapur, Chhattisgarh, India. 3Government College Bhanupratappur, Kanker, Bastar, Chhattisgarh, India. 4Block Technical Manager, Surajpur, Chhattisgarh, India.
Email: [email protected], [email protected]

  •  Accepted: 05 July 2013
  •  Published: 12 July 2013



Among the total six isolates, isolates LAIS-21, LAIK-06 and LAIJ-04 were more potential regarding nitrogen fixation and fixed 19.2 mg, 14.9 mg and 11.0 mg N g-1 malate, respectively. Out of these three isolates, isolate LAIS-21 recorded higher plant height (45.5 cm), number of fruits per plant (36.2), fruit diameter (4.8 cm), fruit weight (57.9), root length (10.3 cm), fresh root weight (23.7 g), yield per plant (2.1 kg) and N content in leaf (58.8 g kg-1), in comparison to other isolates, and also recorded 31.8, 54.7, 23.7, 9.2, 60.9, 23.7, 110.0, 34.6% increase in aforementioned parameters over control under green house conditions. Isolate LAIS-21 also recorded highest yield (808.3 q ha-1) of tomato under field conditions with 92.4% increase over control.


Key words: Azospirillum, nitrogen fixation, tomato, yield and yield attributing characters.