engleski

The effectiveness of biological nitrogen fixation in soybean linked to genotype and environment

The effectiveness of biological nitrogen fixation in soybean linked to genotype and environment was tested using the number and dry weight of nodules per plant, above-ground plant mass, nitrogen content, in the above-ground part of plant and grain yield. A field study conducted in Eastern Croatia from 2004 to 2007 year and involved 8 cultivars in two variants of seed inoculation by Bradyrhizobium japonicum (uninoculated and inoculated). Significant increasing of grain yield affected by inoculation was determined. Effectivenes of biological nitrogen fixation was significantly vaied depends on genetic factor, environmental variables and their interaction. Genetic improvement of soybean for biological nitrogen fixation has economical and ecological benefits for soybean production.

soybean; genotype; environment; Bradyrhizobium japonicum; nitrogen fixation; grain yield

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