from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of various nitrogen-fixing bacteria of the genus Rhizobium that form nodules on the roots of leguminous plants, such as clover and beans.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of various bacteria, of the genus Rhizobium, that form nodules on the roots of legumes and fix nitrogen

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the type genus of Rhizobiaceae; usually occur in the root nodules of legumes; can fix atmospheric oxygen


New Latin Rhizobium, genus name : rhizo- + Greek bios, life; see gwei- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • Greatly stimulated growth has been reported when seedlings were inoculated with a selected rhizobium and the endomycorrhizal fungus, Glomus mosseae (Cornet and Diem 1982).

    Chapter 10

  • SYMBIOSIS: A. holosericea forms nodules with rhizobium and develops endomycorrhizal associations.

    Chapter 10

  • Until recently, it was difficult to procure just the right rhizobium or mycorrhiza for a particular tree species and site.

    Chapter 5

  • Often one rhizobium strain will provide some biological nitrogen fixation (BNF) but will be less effective than another.

    6: Soil health and plant nutrition

  • As you know, leguminous plants have their own bacteria, which also has to respond to the soil to fix nitrogen from the air through the rhizobium.

    Castro Speaks to Academy of Sciences

  • But the soybeans can be planted in April and May, when you grind the cane, with the appropriate applications of rhizobium, because we do not have to depend only on what is in the soil.

    Castro Speaks to Academy of Sciences

  • If you apply the rhizobium, apply the rhizobium cultures to the seeds, those seeds fix much more nitrogen.

    Castro Speaks to Academy of Sciences

  • But if you use a leguminous plant, the rhizobium can produce almost all the nitrogen the plant needs, and not only that, but it leaves the soil enriched with nitrogen.

    Castro Speaks to Academy of Sciences

  • We are producing rhizobium to inoculate the seed of this leguminous plant; if we are successful with this experiment, which we are conducting on a certain scale and with certain information, next year we could plant thousands of caballerias.

    Castro Addresses UJC Congress Closing Session

  • The most important aspect of tropical legumes is their ability to fix P in association with rhizobium atmospheric dinitrogen which becomes available to subsequent crops in rotational cropping systems.

    1. Soil constraints on sustainable plant production in the tropics.


Log in or sign up to get involved in the conversation. It's quick and easy.