if you can afford irrigation over summer you can grow corn in the summer and mill it, and thus double your grain harvest from the same plot (winter grain - wheat/barley and then summer grain corn/rice). this would by rather intensive in terms of using the nutrients in the soil so you'll have to...
A relatively conservative estimate is something between 0.8-1 ton of grain per acre. if wheat is not your only source of grains/carb, i guess two medium loaves a week would do for two adults, which means about 1kg (2lbs) a week (i.e., ±50kg a year). So you'd need to saw about 1/15 of an acre in...
thanks! it took me a while to come up with the idea, and I'm rather pleased with the results. Although I could use a better lid (have some idea, yet to be tried).
happy to share a short video a made showing step by step growing my own wheat and making flour - from seed to loaf - all done on site with very simple methods (third year in a row) - great fun!. (Western Galilee, Israel):