[Role of leguminous plants in effective symniosis with nodule bacteria].

Experiments were conducted with five clover varieties and six lucerne varieties infected with their specific strains of nodule bacteria with a high or low activity. The role of plants in active symbiosis with nodule bacteria was established. The nitrogen fixing activity of nodule bacteria varied within a wide range depending on the plant variety. Not only the activity of the strain, but the variety of the plant too, should be taken into account for industrial purposes.