Once the soils were classified and mapped, production potentials for sunflower seed, oil, and biodiesel were calculated using yields typically obtained by GTECH. Given the area of marginal land suitable for growing sunflowers, as determined by the GIS, the GTECH sunflower oilseed yield (56 kg/ha or 50 lb/acre) was used to calculate the total potential dry oilseed yield (23 L/ha or 2.5 gal/acre) [30].