Back to the grains, this year we planted 200' of popcorn (I've found that it makes a nice cornmeal as well as a popping corn); 100' of sunflower (we will be lucky to harvest any seed this year, still no flowers); 300' of amaranth (good mixed with cereals, and we are going to try it as a sprouting grain for winter); 500 row feet of millet (a good rice substitute); 500' of quinoa (an excellent protein and good flavored rice substitute); poppy seed here and there (the cutworms really got to them, so I kept re-planting wherever we had the space); 500' of hulless oats; 250' dry peas; 350' baking beans.
The cutworms preferred the amaranth, quinoa and poppies over the cereals like oats, millet or popcorn, so they may deserve some protection if cutworms are a problem. The next time we grow these grains I would plant them in different soils, in a separate rotation. The cereal type grains (oats, millet, wheat) can be planted in newer ground, with few amendments, such as after turning in a cover crop. Dry peas and baking beans can be treated this way as well, although they do benefit from working a light layer of compost into the soil. The vegetable type grains (amaranth, quinoa, poppy) require fertile loose soil, with a high compost and humus content, and would benefit from the higher water retention in this class of soil as well. Popcorn and sunflower are heavy feeders and require rich composted soil as well.
Mauve-Flowered Poppy. I snuck a row of poppy seeds in with my flower and herb beds, where a cutworm fence protected them. The flowers are mostly done now, as the cosmos take over blooming. Poppy seed is easy to grow and easy to harvest and thresh, each plant produces 4-6 poppy flowers/seedheads. They dry out well within our short season, but must be watched for mildew in early autumn heavy rains. The stalks tend to fall over and could benefit from trellising or fencing.
Some grains and seeds we did not get around to trying include sesame seed, flax seed, chickpeas, soybeans and lentils. These can also be easily grown in the garden, and harvested for the pantry without the need of specialized machinery or milling.