In the past couple of years, soybean growers have seen prices for their feedstock skyrocket as oil prices rose as well and motorists looked for alternatives to petroleum-based fuels. But those rising prices for soybeans put a lot of refineries in jeopardy, despite the growing demand for biodiesel. Add to those issues, a new proposal from the Environmental Protection Agency that would basically shut out soy-based biodiesel from the Renewable Energy Standard, it’s no wonder Iowa Farmer Today h