With all the chatter about sustainable agriculture even making it to the front page of the New York Times, it's easy to forget that the whole notion of sustainability is all about farmers making short and long-term economic decisions. Given the fragility of the income stream of most non agribusiness farms, it's no wonder that some farmers are willing to trade in the price supports they receive to conserve land for the greater upside potential of planting viable crops on that same acreage during a time of rising food prices.