The proper strain of rhizobium for dry beans is Rhizobium phaseoli.
Inoculants are available in several formulations.
Powdered peat inoculants are applied directly to the seed, but require a sticker agent. Click to expand Liquid inoculants of rhizobia are applied directly to the seed and usually contain a sticker. Follow manufacturers' instructions for proper application of inoculant. All inoculant sold in Canada is registered under the Fertilizers Act, and Agriculture and Agri-Food Canada tests inoculants regularly to ensure they meet the guaranteed number of bacteria stated on the label. The inoculant contains live cultures of bacteria and should be kept refrigerated or cool and moist and out of direct sunlight.