Mary's Veggie Garden

June 23, 2014


Filed under: Beans,Gardening,Vegetables — marysveggiegarden @ 8:49 pm

When  I thinned my pole beans last week, I was pleased to find the roots loaded with rhizobia nodules.  Yes, this is a good thing.

Rhizobia nodules on pole bean roots.

Rhizobia nodules on pole bean roots.

See all those spherical nodules? Each is home to rhizobia bacteria. The rhizobia and beans have a symbiotic relationship: the rhizobia take nitrogen from the air and convert it to a form the plants use as fertilizer. In return the beans feed the rhizobia and house them in the nodules.

At planting time I inoculated the seed with rizobia using a general purpose bean and pea inoculant. It’s working!

BTW when I thinned the plants I should have snipped them instead of pulling. After snipping the roots, nodules and their rhizobia and fixed nitrogen remain in the soil, to benefit adjacent plants.

Harvest Monday: I’m currently harvesting lettuce, spinach, kohlrabi, snow peas, snap peas and Napa cabbage.

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