A field experiment was conducted to evaluate the effects ofBradyrhizobium japonicuminoculation and N fertilization on nodulation, total nitrogen in plant shoots, and yields ofGlycine maxcv. FN3. Inoculation enhanced the nodule number per plant by up to 355–380% and nodule mass per plant by up to 336–182% for TAL 377 and TAL 379 respectively. Total N in plant shoots, plant mass and yields of inoculated and N-fertilized plants were similar and greater than those of uninoculated and unfertilized plants. Inoculation increased the N yield in soyabean by up to 35–55%, compared to 70–102% with N fertilization. Inoculation was equivalent to an application of 75 kg N/ha and 65 kg N/ha for TAL 377 and TAL 379 respectively. Our findings demonstrate the symbiotic effectiveness of the strainsB. japonicumTAL 377 and TAL 379 under field conditions.