CRP Croplands could yield ethanol fuel while maintaining ecological benefits

CRP is the Conservation Reserve Program. The government pays farmers to maintain certain fields in grasses or trees. Often, this is land that is too steep for row cropping without extensive erosion. At first glance, you would think that removing biomass from these fields every year would reduce soil fertility. Actually, this is not necessarily so. Some plants, including most grasses, are stimulated to grow more strongly by mowing or grazing. This greater biological activity leads to tapping more nutrient reserves from deep in the earth and from the air. Bacteria and fungi work in symbiosis with plant roots to extract nitrogen from the air and from certain soil particles. These nutrients are translated into plant mass and greater organic matter in the soil.
Estimating Ethanol Yields from CRP Croplands / March 19, 2010 / Newsfrom the USDA Agricultural Research Service: "This extensive study also shows that CRP lands in the northeastern United States with a high proportion of tall native prairie grasses have the potential to produce more than 600 gallons of ethanol per acre. This energy can be produced while maintaining the ecological benefits of CRP grasslands."

Ethanol-Optimized Engine getting closer

The octane and oxygen advantages of ethanol can overcome the fuel economy deficit. But it requires an engine designed to take advantage of these factors. Such an engine would be a game-changer in the automotive and energy world. The CEO of Growth Energy talks about their prototype engine:
Ethanol-Optimized Engine A Major Breakthrough for Producers - Ethanol Producer Magazine: "And, at blends of E40 to E50, the EBDI engine improves on the fuel economy of regular gasoline engines by as much as 10 percent. Think about that: One of the biggest criticisms of ethanol is that engines lose mileage when burning ethanol. But this engine proves that the problem isn’t the fuel—it’s the engine."