Also growing, and harvesting small-grains by hand, is an awful lot of work for something that you can easily buy in bulk at a natural foods co-op. A better niche for the scythe user, would be to grow rare heritage varieties, that you can't buy anywhere else. You can help preserve them for the future, and also to adapt them to your bio-region. Start with a variety of different grains in garden-sized plots, and see what does well in your area. Save the seed of what grows, and tastes the best, to sow larger areas the next year.
Some sources in the U.S.A., for heritage grain seed are:
http://www.bountifulgardens.org/products.asp?dept=4 I recently ordered a Red Emmer wheat, Einkorn, Kamut, and Akusti rye from Bountiful Gardens.
http://www.ancientcerealgrains.org/ They have extremely rare seeds (somewhat strangely described), available in tiny packets. I ordered Ancient Wheat set (Dinkel, Emmer, and Einkorn), from the Kusa Society, plus the Miracle Barley set.
http://www.growseed.org/seed.html . Expensive to join, but what an education you would get. Imagine the quality and flavor and nutrition of the bread made with these grains! I ordered a pound of an ancient Ethiopian variety of organically grown Emmer wheat seed from this site.
http://sustainableseedco.com/wheat/ Lots of interesting wheats available here.
If you live in Canada see: www.saltspringseeds.com . They have a great selection, but absolutely will not sell to the USA. Don't even bother asking.
Here's dreaming of fields of heritage grain....