CRP grasslands with the highest number of species had the lowest potential ethanol yields per acre. Test plots of Switchgrass at Auburn University have produced up to 15 tons of dry biomass per acre. The scientists used NIRS to test switchgrass varieties and experimental lines adapted to the Midwest and found significant differences for actual and potential ethanol yield per ton and per acre. Table 1, below, provides a comparison of switchgrass production assuming a peak yield of 6 tons per acre in years 3 to 6 and a hay yield of 3 tons per acre. Helsel said growing Switchgrass for carbon credits outside of Chicago only yields about $3 to $4 per acre. Switchgrass, big bluestem and indiangrass, which are all tall native prairie grasses, dominated the vegetation mix. Simply put, they have the advantages of better ethanol yields and less-restrictive climate and land constraints. With switchgrass, there has been continued testing in cultivation to determine yield amounts. The researchers point out that this was a base-line study. In this study, switchgrass managed as a bioenergy crop produced estimated ethanol yields per acre similar to those from corn grown in the same states and years based on statewide average grain yields. for cellulosic ethanol production in California, including agricultural and urban wastes, rice and wheat straw, wood Switchgrass is a grass native to North America that has been utilized primarily as a forage crop and groundcover. Additional studies show that Switchgrass ethanol produces 94% less CO2 than oil. Equivalent ethanol production is expected to be as much as 3,000 gallons per acre and needs no government subsidy to be profitable.” Every month, the Jennings material notes, “The U.S. spends $30 billion on fuel from OPEC nations. With the cultivation of corn plants, it has been shown that one acre of land can yield about 7,110 pounds of corn which can be processed into 328 gallons of ethanol. “Farmers can grow Freedom giant miscanthus with a profit potential of $100 per ton, or $2,000 per acre. Under good management, a producer can expect a yield up to 10 tons per acre. Five-year yields average 11.5 tons, enough to make 1,150 gallons of ethanol per acre each year. In Europe, where carbon credits are mandatory, it jumps to $25 per acre. That is about 26.1 pounds of corn per gallon of ethanol. Because of its high biomass yields, switchgrass (above, in … In particular, there's a trend away from sugar- and starch-based feedstocks (corn, sugar beets and sugarcane) and toward cellulose-based feedstocks (switchgrass, poplar and other plants with high fiber content). Using a conservation cellulosic conversion value, researchers found that switchgrass grown on the marginal fields produced an average of 300 gallons of ethanol per acre compared to average ethanol yields of 350 gallons per acre for corn for the same three states. In this scenario, the long-term profitability of switchgrass and of hay production over a 15-year time horizon is exactly equal. Traditional breeding methods could produce a switchgrass hybrid that could yield 10 to 12 tons of biomass per acre in the next five years, up from about 5 tons per acre currently, Rath said. Michigan State University yields in East Lansing ranged from 7 to 10 tons per acre. Even though the net return to switchgrass is higher Switchgrass for biomass should be harvested once per year, after the top growth has completely died, using conventional haying equipment in the late fall or early winter. There was an average of 34 different plant species per quarter-acre. 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