Rhizobia, the soil bacteria in question, form a symbiotic relationship with the soybeans to create nodules and fix nitrogen all season long. But sometimes soil might not have enough rhizobia for ...

When rhizobia infect legume roots, root epidermal cells form infection threads, membranous tube-like structures guiding the bacteria to the inner root tissue where they can fix nitrogen. Rhizobial ...

Coated seed is common for legume species such as alfalfa and clover. Coatings contain rhizobia bacteria and often a fungicide to inoculate roots and to help protect seedlings.