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

Importance of microbiological fertilizer used in soybean production: Agronomical and biological aspects

Svetlana Balešević-Tubić1*,  Vojin Đukić1, Jelena Marinković1, Gordana Dozet2, Docent Kristina Petrović1 and Mladen Tatić1
1Institute of Field and Vegetable Crops, M. Gorkog 30, 21000 Novi Sad, Serbia. 2Faculty of Biofarming, Marsala Tita 39, 24300 Bačka Topola, Serbia.  
Email: [email protected]

  •  Accepted: 30 September 2011
  •  Published: 23 November 2011

Abstract

 

Inoculation is the best way to ensure good nodulation with the proper strain of nitrogen-fixing bacteria for increased yield in an environmentally safe manner. This investigation was conducted on three-year experiment which was set up in four replications with three-crop rotation (maize-soybean-wheat) at experimental field of the Institute of Field and Vegetable Crops, Novi Sad, Serbia. Effects of application of microbiological fertilizer (with nitrogen-fixing bacteria Bradyrhizobium japonicum) on root mass, number and mass of nodes per plant, soil biogeneity (number of ammonifiers, Azotobacter, actinomycetes), as well as the effect on soybean yield were studied. Obtained results indicated positive impact of inoculation on nitrogen fixation parameters. The higher amounts of mineral nitrogen had negative impact on atmospheric nitrogen fixation, i.e. by increasing preplanting mineral nitrogen amount in the soil by 1 kg, the amount of calculated nitrogen from the air was decreased by 1.72 kg. Increasing abundance of studied microorganisms in the rhizosphere, as well as soybean yield using microbiological fertilizer was stimulated by plowing under crop residues. The impact of meteorogical conditions on the effects of inoclutaion was very significant.

 

Key words: Inoculation, fertilizing, nitrogen fixation, soybean, microorganisms, yield.