Soybean and mixed bacterial population
2003
Raicevic, V. (Faculty of Agriculture, Belgrade - Zemun (Serbia and Montenegro)) | Jakovljevic, M. | Kikovic, D. | Lalevic, B. | Antic-Mladenovic, S.
The beneficial effect of soybean inoculation with bradyrhizobia is well known. The aim of this research was to determine the effect of inoculation of soybean seed with mixed population of Bradyrhizobium japonicum, Bacillus megaterium, Bacillus circulans, and Azotobacter chroococcum, on the number of microorganisms and yield of soybean. The experiment was conducted on chernozem at the experimental field of Maize Research Institute Zemun Polje, Belgrade - Zemun (Serbia&Montenegro). Soybean seeds were inoculated before seeding. Bacterial mixture has contained equal amounts of the bacteria in the peat. Humate is added to peat in order to prolong bacteria survive. The control variant was inoculated with Bradyrhizobium japonicum. The study showed that seed inoculation with bacterial mixtures caused an increase in microbial activity in the soil rhizosphere (total bacterial number, number of ammonifiers, azotobacters and dehydrogenase). The highest yield of soybean was obtained by inoculation with Bradyrhizobium japonicum, Bacillus megaterium and Bacillus circulans (4.5 t/ha).
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