Biofuel Organisms - Soybean

Soybean is the least useful biofuel feedstock in terms of output per acre. Most estimates suggest that soybean can maximally produce 40 gallons of fuel per acre, which means more than 5.6 million acres of land would have to be planted with soybeans just to meet the fuel needs of the U.S. for a single year. At its worst output levels, algae are over 1000 times more efficient than soybean. We needn't go any further in our analysis than this because even at 400 gallons per acre, corn is 10 times more efficient than soybean.