Legumes host nitrogen fixing germs, and thus are honest crops to plant to replenish the soil.? Is the above statement true or false?

Is the above statement true or false?
True true


true,as a winter crop,plant surrounded by fall let it winter over as a ground cover,consequently in the spring till it under..tom also lupins,build sure you dig in of late as they begin to flower, not after
Answers:    very true... when the leaves die do till it under you can even give some more organic waste and that will assist even further adding some compost works miracles as well