closing a nutrient cycle

while the rest of the garden slows the green manures are digging in before dormancy ( if there will be dormancy...that is still unresolved...the last few years' experience says "no" )...the ex-potato bed is alive with nitrogen fixing plants returning nutrients to he soil with the help of the rhizobia bacteria they were inoculated with when they were planted...the winter rye will act a s a reservoir as it overwinters and the hairy vetch will resume nitrogen production in the spring until we turn them under to replant the bed...this will return the nutrients we mined from the soil with the potatoes and insure a fair start for whatever goes in next season...the hairy vetch in the second photo is blooming but i am doubtful of its ability to go to seed before the frost...the yellow peas are a different matter..they have produced pods and the continuing blooms promise more...i would really like to be able to collect some mature seed form them to replant nest year to continue the green manure project and institute some seed saving in the garden as well...generations of our own green manures would be a good step towards sustainability in the community garden...perhaps we could devote a whole bed to them in the spring and assure seed production.