Rhizobium

Marijuana Horticulture

by Jorge Cervantes

Rhizobium is the name given to a group of bacteria which infect the roots of legumes and create nodules that act in symbiosis with the plant. Rhizobia are host-specific and will not work with all crops. With the proper host, however, Rhizobia improve nitrogen fixation while simultaneously providing an additional source of nitrogen.

Rhizobium is most effective when added to irrigation, but it can be added to a drip or directly to the soil. Benefits will depend on proper crop / Rhizobium match. Re-innoculation is recommended every three to five years.