One-tenth acre each of buckwheat, Country Gentleman corn, and Waltham butternut squash.  This was a few weeks ago, before the weather turned dry (it was already hot).  Buckwheat is part of our fertility management system; today there are eighty hens penned on that patch, tramping down the plants, manuring, harvesting seed.  We'll come behind in a couple of weeks with a thick sowing of oats or wheat -- winter pasture for chickens in tractors, grown-in-place mulch for potatoes -- the first crop in our five-stage rotation:  potatoes, corn, winter squash, mangel-wurzels, then back to buckwheat (or variations on that theme).