"Growing Degree-Day Calculator for the Southeast USA"
"The GDD information generated using this tool could help the farmer better plan application of agricultural inputs (fertilizers, pesticides, irrigation, etc)." http://www.clemson.edu/extension/publications/files/agronomic-crops/ac10-growing-degree-day-calculator-for-southeast-usa.pdf 
Pee Dee Crop Producer Reports
Pee Dee Crop Producer Reports