Whitty, E.B., and C.G. Chambliss. (2001) 2003. “Planting Dates, Rates, and Methods of Agronomic Crops : SS-AGR-150/AA127, Rev. 03/2005”. EDIS 2019 (6). Gainesville, FL. https://doi.org/10.32473/edis-aa127-2001.