Do all legumes need Rhizobium?

Like other crops, non-nodulated legumes can grow very well using soil nitrogen supplied as commercial fertilizer. However, doing so removes the important natural process of biological nitrogen fixation from the nitrogen cycle of any agricultural production system. This is because the manufacture of commercial nitrogen is expensive; especially in terms of energy use and final cost to the farmer. Achieving high levels of nitrogen for incorporation into the soil (a practice called “green manuring”) or high protein levels in the harvested product, all freely obtained with Rhizobium inoculation and infection is simply better and more cost-effective for any farmer. The Nitro-Coat® process equips legumes to freely collect nitrogen and incorporate these into the nitrogen cycle, allowing reduced usage of costly commercial fertilizer.