In which of the following situations would we expect to see the highest rate/occurrence of symbiotic rhizobial nitrogen fixation? Peas or beans (legumes) were grown in the soil in a previous growing season. Lack of bioavailable nitrogen sources in the soil. Presence of abundant ammonia fertilizer in soils. Temperate climate conditions. In which of the following situations would we expect to see the highest rate/occurrence of symbiotic rhizobial nitrogen fixation? Presence of abundant ammonia fertilizer in soils. Peas or beans (legumes) were grown in the soil in a previous growing season. Lack of bioavailable nitrogen sources in the soil. Temperate climate conditions..