NOVELTY - A method of production of biodiesel involves mixing and oil extracting, corn germ and Simarouba seeds, converting corn starch into fermentable sugars by liquification and saccharification process, mixing Simarouba fruit syrup with corn starch after saccharification process, adding yeast to the mixture, where fermentation takes place for 72 hours, distilling after fermented wash to produce ethanol, performing transesterification of corn oil and Simarouba oil mixture, ethanol and catalyst to produce biodiesel and by-product glycerin.    USE - For production of biodiesel from combination of corn and other agro feedstock (claimed).    ADVANTAGE - The method provides economical production of biodiesel from combination of corn and other agro feedstock such as combination of corn and rice (paddy) as feedstock, combination of corn and other natural sources as feedstock, combination of corn and Simarouba Seeds and Fruits as feedstock, combination of Corn and Mahua seeds (Maduca indica; Maduca longifolia) and dried flowers as feedstock, combination of corn and sweet sorghum, and combination of corn and solvent extracted oil from refiners bleach (press) mud as feedstock. The method overcomes feedstock shortages, enables stable year round production of Biodiesel, increases equipment utilization rate and delivers economic benefits; reduces the environmentally detrimental effluents from the Biodiesel production processes; utilizes (unmarketable) damaged paddy, along with corn; utilizes inedible oil seeds along with corn for Biodiesel production; and reduces the amount of water required per given amount of ethanol produced in combination of corn and molasses (sugar/molasses).    DETAILED DESCRIPTION - A method of production of biodiesel from combination of corn and other agro feedstock, where the base or major raw material is corn (maize) and agro feedstock is Simarouba involves mixing and oil extracting, corn germ and Simarouba seeds, converting corn starch into fermentable sugars by liquification and saccharification process, mixing Simarouba fruit syrup with corn starch after saccharification process, adding yeast to the mixture, where fermentation takes place for 72 hours, distilling after fermented wash to produce ethanol, performing transesterification of corn oil and Simarouba oil mixture, ethanol and catalyst to produce biodiesel and by-product glycerin.    An INDEPENDENT CLAIM is included for a method of production of biodiesel from combination of corn, and unedible oil extracted from spent bleach mud (spent sodium bentonite mud), where the base or major raw material is corn.