The study looked at how different rules for managing biofuel mandates affect biofuel production and prices in the USA, European Union, and Brazil. By using a model to simulate different scenarios, the researchers found that current mandates have a big impact on biofuel crops. They predict that global biofuel production will increase by 54% by 2020, with EU ethanol and biodiesel production expected to grow significantly. The study also found that when feedstock yields rise and prices fall, there is a higher demand for biofuels compared to fossil fuels.